Measurement device and measurement system

Abstract

The present invention makes it possible to change the position and orientation of a microphone with a high degree of freedom, and to suppress the impact of a structure on acoustic measurement. This measurement device is for performing acoustic measurement and comprises: one or more microphones for acquiring a sound outputted from a sound source at a sound reception point; a first support unit for directly or indirectly supporting the microphone so that the sound reception point is positioned mid-air at a rotational center or a position separated by a prescribed distance from the rotational center; a second support unit for supporting the first support unit at a lower end part of the first support unit; a first motor for rotating the first support unit in the vertical direction; and a second motor for rotating the second support unit in the horizontal direction.

Description

Measuring Device and Measuring System

[0001] The present invention relates to a measurement device and a measurement system.

[0002] There are known techniques for performing acoustic measurements by moving and rotating one or more microphones to multiple positions and orientations, placing a microphone at a certain position, and playing and collecting a measurement signal once each to obtain measurement results such as room impulse response (RIR). For example, there are known techniques for performing acoustic measurements at sound receiving points in multiple orientations from a single microphone having only one sound receiving point by changing the microphone's orientation in various ways (see, for example, Patent Documents 1 to 3). There is also known a technique for performing acoustic measurements at multiple positions where the sound receiving point of the microphone is a fixed distance from the rotation axis (see, for example, Patent Document 2).

[0003] JP 2005-69774 A JP 2008-249702 A JP 2019-161455 A

[0004] However, the above-described conventional techniques cannot change the position and orientation of the microphone with a high degree of freedom, and therefore may not be able to suppress the influence of structures on acoustic measurement. For example, the conventional techniques have limited freedom in the position and orientation of the microphone, such as the inability to set the microphone's sound receiving point near the center of rotation. Furthermore, reflections and diffractions from structures around the microphone on the measurement device itself may adversely affect acoustic measurement and measurement results. One aspect of the present disclosure makes it possible to change the position and orientation of the microphone with a high degree of freedom and suppress the influence of structures on acoustic measurement.

[0005] A measurement device according to one aspect of the present disclosure is a measurement device for performing acoustic measurements, and includes one or more microphones that acquire sound output from a sound source at a sound receiving point, a first support part that directly or indirectly supports the microphones so that the sound receiving point is located at the center of rotation or in the air a predetermined distance away from the center of rotation, a second support part that supports the first support part at a lower end of the first support part, a first motor that rotates the first support part in a vertical direction, and a second motor that rotates the second support part in a horizontal direction.

[0006] A measurement system according to one aspect of the present disclosure is a measurement system for performing acoustic measurements, comprising a measurement device and an information processing device, wherein the measurement device comprises one or more microphones that acquire sound output from a sound source at a sound receiving point, a first support part that directly or indirectly supports the microphones so that the sound receiving point is located in air at the center of rotation or a predetermined distance away from the center of rotation, a second support part that supports the first support part at a lower end of the first support part, a first motor that rotates the first support part in a vertical direction, and a second motor that rotates the second support part in a horizontal direction, and the information processing device comprises an output control part that causes the sound to be output from the sound source.

[0007] FIG. 1 is a side view showing an example of a measurement device according to a first embodiment. FIG. 2 is a side view showing an example of a microphone and a measurement unit. FIG. 3 is a diagram for explaining an example of a measurement device according to the first embodiment. FIG. 4 is a diagram for explaining an example of a measurement device according to the first embodiment. FIG. 5 is a top view showing an example of a measurement device according to the first embodiment. FIG. 6 is a side view showing an example of a measurement device according to the first embodiment. FIG. 7 is a side view showing an example of a measurement device according to the first embodiment. FIG. 8 is a schematic diagram showing an example of a measurement device according to a second embodiment. FIG. 9 is a schematic diagram showing an example of a measurement device according to a third embodiment. FIG. 10 is a schematic diagram showing an example of a measurement device according to a fourth embodiment. FIG. 11 is a block diagram showing an example of a measurement system according to a fifth embodiment. FIG. 12 is a flow diagram showing an example of measurement processing by the measurement system according to the fifth embodiment. FIG. 13 is a block diagram showing an example of a measurement system according to a sixth embodiment. FIG. 14 is a diagram for explaining an example of display control. FIG. 15 is a block diagram showing an example of a measurement system according to a seventh embodiment. FIG. 16 is a diagram for explaining an example of transmission of measurement information. FIG. 17 is a block diagram showing an example of a measurement system according to an eighth embodiment. FIG. 18 is a block diagram showing an example of a measurement system according to a ninth embodiment. FIG. 19 is a diagram for explaining an example of estimation of measurement results. FIG. 20 is a block diagram showing an example of a hardware configuration of the device.

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following embodiments, the same elements are denoted by the same reference numerals, and redundant description may be omitted.

[0009] The present disclosure will be described in the following order: 0. Introduction 1. First Embodiment 2. Modification 3. Second Embodiment 4. Third Embodiment 5. Fourth Embodiment 6. Fifth Embodiment 7. Modification 8. Sixth Embodiment 9. Seventh Embodiment 10. Eighth Embodiment 11. Ninth Embodiment 12. Example of Hardware Configuration 13. Example of Effects

[0010] 0. Introduction As described above, conventional technologies such as those disclosed in Patent Documents 1 to 3 do not allow for a high degree of freedom in changing the position and orientation of the microphone, and in some cases, are unable to suppress the effects of structures on acoustic measurements. For example, conventional technologies have limited freedom in the position and orientation of the microphone, such as the inability to set the microphone's sound receiving point near the center of rotation. Furthermore, reflections and diffractions from structures around the microphone on the measurement device itself can adversely affect acoustic measurements and measurement results.

[0011] According to the technology of the present disclosure, the position and orientation of the microphone can be changed with a high degree of freedom, and the influence of structures on acoustic measurement can be suppressed. Specific technology will be described in the following embodiments.

[0012] 1. First Embodiment FIG. 1 is a side view showing an example of a measurement device according to a first embodiment. The measurement device 10 is a device for performing acoustic measurement. Here, acoustic measurement refers to placing a microphone at a certain position, reproducing a measurement signal, and collecting sound one by one. As shown in FIG. 1, the measurement device 10 includes a microphone 11, a first support unit 13, a second support unit 14, a first motor 15, and a second motor 16. As shown in FIG. 1, the measurement device 10 may further include a measuring unit 17, a boom 18, and a third motor 19. In the example shown in FIG. 1, the measurement device 10 includes only one microphone 11, but may also include multiple microphones 11.

[0013] The microphone 11 acquires sound output from a sound source at a sound receiving point 11X. For example, the microphone 11 records sound output from a speaker at the sound receiving point 11X. An example of the microphone 11 will be described below with reference to FIG. 2. FIG. 2 is a side view showing an example of a microphone and a measuring unit. As shown in FIG. 2, the microphone 11 may be, for example, a stick-type directional microphone.

[0014] In the example of the microphone illustrated in Figures 1 and 2, the microphone 11 is a stick-type directional microphone with a sound receiving point 11X at its end. However, there is no particular limitation on the microphone 11 as long as it can capture sound output from a sound source at the sound receiving point 11X. For example, the microphone 11 may be a directional microphone or an omnidirectional microphone. The shape of the microphone 11 is also not particularly limited, and it may be, for example, a stick-type microphone as described above, or a spherical microphone. Examples of stick-type microphones include those illustrated in the microphone diagrams of Figures 1 and 2, as well as a gun microphone. The location of the sound receiving point of a gun microphone is not particularly limited, and examples include the base of the microphone 11 and the vicinity of a connection portion (such as a connection terminal or connector) where the microphone 11 is directly or indirectly connected to the first support portion 13. Examples of spherical microphones are not particularly limited, and include, for example, a spherical array microphone in which multiple microphones are installed in a single housing.

[0015] The first support portion 13 directly or indirectly supports the microphone 11 so that the sound receiving point 11X is located at the center of rotation 12 or in the air a predetermined distance away from the center of rotation 12. The first support portion 13 may directly or indirectly support the microphone 11 so that the sound receiving point 11X is located at the center of rotation 12, or may directly or indirectly support the microphone 11 so that the sound receiving point 11X is located in the air a predetermined distance away from the center of rotation 12. The center of rotation 12 refers to the intersection of the rotation axes of the first support portion 13 and the second support portion 14, for example, as shown in FIG.

[0016] 1 , the first support part 13 indirectly supports the microphone 11 via the boom 18 so that the sound receiving point 11X is located in the air a predetermined distance away from the rotation center 12. However, the first support part 13 may directly support the microphone 11. For example, the first support part 13 may directly support the microphone 11 by being connected to the microphone 11 at the end of the microphone 11 opposite the sound receiving point 11X.

[0017] 1, the first support 13 has a U-shaped support 13X (a swing-shaped support) and two columnar support parts 13Y. The U-shaped support part 13X directly or indirectly supports the microphone 11 at the bottom of the U-shaped support part 13X.

[0018] For example, the U-shaped support portion 13X indirectly supports the microphone 11 at the bottom of the U-shaped support portion 13X via the boom 18. In the example shown in Fig. 1 , the U-shaped support portion 13X supports the boom 18, which is connected to the end of the microphone 11 on the opposite side from the sound receiving point 11X, at the bottom of the U-shaped support portion 13X, thereby indirectly supporting the microphone 11 at the bottom of the U-shaped support portion 13X. The two columnar supports 13Y respectively lock the upper end portions of the U-shaped support portion 13X while allowing the U-shaped support portion 13X to rotate in response to the power transmitted from the first motor 15.

[0019] The U-shaped support 13X may directly or indirectly support the microphone 11 at its bottom so that the distance between the sound receiving point 11X and each of the two columnar support members 13Y is equal to or greater than a predetermined threshold. The predetermined threshold is not particularly limited as long as the sound receiving point 11X is far enough from surrounding structures, such as the two columnar support members 13Y, to reduce the influence of the structures, such as by reducing the influence of sound reflection by the structures. For example, the predetermined threshold may be 50 cm. In the example shown in FIG. 1 , the U-shaped support 13X indirectly supports the microphone 11 at approximately the center of the bottom so that the distance from the rotation center 12 to each of the two columnar support members 13Y is 50 cm or greater. Here, in the example shown in FIG. 1 , the distance from the sound receiving point 11X to each of the two columnar support members 13Y is greater than the distance from the rotation center 12 to each of the two columnar support members 13Y. As a result, the U-shaped support portion 13X indirectly supports the microphone 11 at the bottom so that the distance between the sound receiving point 11X and each of the two pillar-shaped support portions 13Y is 50 cm or more.

[0020] The second support portion 14 supports the first support portion 13 at the lower end portion of the first support portion 13. For example, as shown in FIG. 1 , the second support portion 14 supports the first support portion 13 at the lower end portions in the vertical direction of two columnar support portions 13Y of the first support portion 13.

[0021] The first motor 15 rotates the first support unit 13 in the vertical direction. The second motor 16 rotates the second support unit 14 in the horizontal direction. For example, as shown in FIG. 1 , the first motor 15 rotates the U-shaped support unit 13X in one of the directions of the elliptical arrows whose longitudinal direction is the vertical direction, and the second motor 16 rotates the second support unit 14 in one of the directions of the elliptical arrows whose longitudinal direction is the horizontal direction.

[0022] 1 , at least one of the first motor 15 and the second motor 16 may be installed in a position adjacent to the second support part 14. For example, the first motor 15 is installed inside a housing connected to the second support part 14, and the second motor 16 is installed on a base 22 below the second support part 14.

[0023] Here, the second support part 14 supports the first support part 13 at the lower end part of the first support part 13, and is therefore installed lower than the microphone 11, which is installed higher than the lower end part of the first support part 13. In the example shown in Fig. 1 , the first motor 15 and the second motor 16 are installed at the same position as or lower than the second support part 14 in the vertical direction, and as a result, are installed lower than the microphone 11, which is installed higher than the second support part 14.

[0024] An example of the first motor 15 and the second motor 16 will be described in detail below with reference to FIGS. 3 to 6. FIGS. 3 and 4 are diagrams for explaining an example of a measuring device according to the first embodiment. FIG. 5 is a top view showing an example of a measuring device according to the first embodiment. FIGS. 6 and 7 are side views showing an example of a measuring device according to the first embodiment. The shape of the measuring device 10 shown in FIGS. 3 to 6 does not necessarily match the shape of the measuring device 10 shown in FIG. 1, but components having similar functions are assigned similar reference numerals. In this way, the measuring device 10 can have any shape as long as it has components with similar functions.

[0025] 3 and 4 are diagrams showing the rotational movement of the U-shaped support portion 13X and the second support portion 14 of the measuring device 10, which are simplified versions of the measuring device 10 shown in FIG. 1. In the example shown in FIGS. 3 and 4, the first motor 15 rotates the U-shaped support portion 13X of the first support portion 13 in the direction of the elliptical arrow, whose longitudinal direction is vertical. The second motor 16 rotates the second support portion 14 in the direction of the elliptical arrow, whose longitudinal direction is horizontal. As a result, the position and orientation of the sound receiving point 11X of the microphone 11 are changed from the position and orientation shown in FIG. 3 to the position and orientation shown in FIG. 4.

[0026] Fig. 5 is also a top view of the measuring device 10 shown in Fig. 1 , without showing the U-shaped support portion 13X. In the example shown in Fig. 5, the first motor 15 is installed inside a housing connected to the second support portion 14, and the second motor 16 is installed below the second support portion 14. In addition, in the example shown in Fig. 5, the first motor 15 transmits power to a columnar portion 20 on the second support portion 14, which is connected via a gear.

[0027] FIG. 6 is a side view of the measuring device 10 shown in FIG. 1 , without showing the belt 21, second support 14, first motor 15, second motor 16, and base 22. FIG. 7 is a side view of the measuring device 10 shown in FIG. 1 , with the belt 21 engaged with the upper end of the first support 13, and showing the second support 14, first motor 15, second motor 16, and base 22. In the example shown in FIG. 7 , the first motor 15 transmits power generated by rotation to the upper end of the first support 13 via the columnar portion 20 and the belt 21, thereby rotating the U-shaped support 13X rotatably engaged with the two columnar support portions 13Y. Examples of the belt 21 include a timing belt.

[0028] The measurement unit 17 measures the angle of the microphone 11. For example, the measurement unit 17 measures the angle of the microphone 11 with respect to the vertical direction. An example of the measurement unit 17 will be described below with reference to FIG. 2 . As shown in the diagram of the measurement unit in FIG. 2 , the measurement unit 17 may be, for example, an inertial measurement unit such as an IMU (Inertial Measurement Unit). In this case, the position and orientation of the microphone 11 are obtained by integrating the acceleration and angular velocity of the microphone 11 in three-dimensional directions measured by the measurement unit 17. The installation position of the measurement unit 17 is not particularly limited as long as it is a position where the angle of the microphone 11 can be measured. For example, the installation position of the measurement unit 17 may be a position where the angle is the same as that of the microphone 11, such as between the end of the microphone 11 on the opposite side from the sound receiving point 11X and the first support unit 13.

[0029] The boom 18 fixes the microphone 11 to the first support part 13. The installation position of the boom 18 is not particularly limited, but may be, for example, between the end of the microphone 11 on the opposite side of the sound receiving point 11X and the first support part 13, which is a position where the end of the microphone 11 on the opposite side of the sound receiving point 11X and the U-shaped support part 13X can be connected, as shown in FIG.

[0030] The third motor 19 directly or indirectly drives the microphone 11 so that the distance from the rotation center 12 to the microphone 11 is variable. The installation position of the third motor 19 is not particularly limited as long as it is a position where the third motor 19 can directly or indirectly drive the microphone 11 so that the distance from the rotation center 12 to the microphone 11 is variable. An example of the installation position of the third motor 19 is between the boom 18 and the first support part 13, such as the position where the boom 18 and the U-shaped support part 13X are fixed, as shown in FIG. 1 . In this case, the third motor 19 drives the boom 18, thereby indirectly driving the microphone 11.

[0031] In the example shown in FIG. 1 , the measuring device 10 has a boom 18. However, for example, if the length of the microphone 11 corresponds to the length including the boom 18 and the microphone 11 is directly supported by a U-shaped support portion 13X of the first support portion 13 on the opposite side of the sound receiving point 11X, the measuring device 10 does not need to have the boom 18. In this case, the third motor 19 directly drives the microphone 11 so that the distance from the center of rotation 12 to the microphone 11 is variable. The installation position of the third motor 19 is not particularly limited, and may be, for example, the intersection of the end of the microphone 11 on the opposite side of the sound receiving point 11X and the first support portion 13.

[0032] 1 , the first support portion 13 directly or indirectly supports the microphone 11 at the end of the microphone 11 opposite the sound receiving point 11X so that the sound receiving point 11X is located in the air a predetermined distance away from the rotation center 12. However, the first support portion 13 may directly or indirectly support the microphone 11 so that the sound receiving point 11X is located at the rotation center 12. In this case, the first motor 15 rotates the first support portion 13 in the vertical direction so that the position of the sound receiving point 11X remains constant.

[0033] Furthermore, first support portion 13 may directly or indirectly support microphone 11 at a position other than the opposite side of sound receiving point 11X or the end, as long as it can directly or indirectly support microphone 11 so that sound receiving point 11X is located in the air or at center of rotation 12 a predetermined distance away from center of rotation 12. For example, in cases where sound receiving point 11X is provided near the base of microphone 11 and a connection portion is provided near the same side as sound receiving point 11X, as in some gun microphones, first support portion 13 may directly or indirectly support microphone 11 at the connection portion.

[0034] 3. Second Embodiment A measurement device according to an aspect of the present disclosure may further include a sensor that detects the position of at least one of the microphone and the measurement device. For example, a measurement device according to an aspect of the present disclosure may further include a sensor that detects the position of the microphone instead of, or in addition to, a measurement unit. A measurement device 10α according to a second embodiment will be described below with reference to FIG. 8. FIG. 8 is a schematic diagram showing an example of a measurement device according to the second embodiment. The shape of the measurement device 10α shown in FIG. 8 is a schematic representation of the shape of the measurement device 10 according to the first embodiment shown in FIG. 1 and the like. Components denoted with the same reference numerals as those of the measurement device 10 shown in FIG. 1 and the like have the same functions as those of the measurement device 10.

[0035] In the example shown in FIG. 8 , the measuring device 10α further includes a sensor 23 for detecting the position of the microphone 11 in addition to the components of the measuring device 10 according to the first embodiment. Except for this, the measuring device 10α is similar to the measuring device 10 according to the first embodiment. In the example shown in FIG. 8 , the sensor 23 is an imaging unit such as a camera that detects the position and orientation (angle) of the sound receiving point 11X of the microphone 11. The sensor 23 captures an image of the microphone 11 from above, such as diagonally above the microphone 11, but may also be mounted on the measuring device 10α. In this case, the installation position of the sensor 23 is not particularly limited as long as it is a position where the position of the microphone 11 can be detected. In the example shown in FIG. 8 , the sensor 23 detects only the position of the microphone 11 by capturing an image of the microphone 11 from diagonally above the microphone 11. However, instead of or in addition to the microphone 11, the measuring device 10 may detect the position of the measuring device 10α based on image information captured by the measuring device 10.

[0036] 4. Third Embodiment A measuring device according to one aspect of the present disclosure may further include wheels for moving the measuring device below the second support unit. A measuring device 10β according to a third embodiment will be described below with reference to FIG. 9 . FIG. 9 is a schematic diagram showing an example of a measuring device according to the third embodiment. The shape of the measuring device 10β shown in FIG. 9 is a schematic representation of the shape of the measuring device 10 according to the first embodiment shown in FIG. 1 and the like. In FIG. 9 , the components denoted with the same reference numerals as those of the measuring device 10 shown in FIG. 1 and the like have the same functions as those of the measuring device 10.

[0037] In the example shown in FIG. 9 , the measuring device 10β further includes, in addition to the components of the measuring device 10 according to the first embodiment, wheels 24 for moving the measuring device 10β and a sensor 23 for detecting the position of the measuring device 10β, which are installed under the second support unit 14. Other than this, the measuring device 10β is similar to the measuring device 10 according to the first embodiment. In the example shown in FIG. 9 , the wheels 24 are connected to a base 22 under the second support unit 14 and are motor-controlled wheels. However, they may also be wheels or the like for manually moving the measuring device 10β. In the example shown in FIG. 9 , the sensor 23 is installed on the second support unit 14 and detects the position of the measuring device 10β. However, the sensor 23 may be installed at a location independent of the measuring device 10β and detect the position of the microphone 11 instead of or in addition to the position of the measuring device 10β. For example, if the sensor 23 is installed diagonally above the microphone 11 rather than on the second support unit 14, the general shape of the measuring device 10β will be a shape in which wheels 24 are provided below the second support unit 14 of the measuring device 10α shown in Fig. 8. The sensor 23 installed on the second support unit 14 may have a self-position estimation function such as SLAM (Simultaneous Localization and Mapping). The sensor 23 installed in a position independent of the measuring device 10β may be installed in a room or the like.

[0038] 5. Fourth Embodiment In a measurement device according to one aspect of the present disclosure, the shape of the first support portion may be circular or arc-shaped. A measurement device 10γ according to a fourth embodiment will be described below with reference to FIG. 10 . FIG. 10 is a schematic diagram showing an example of a measurement device according to the fourth embodiment. The shape of the measurement device 10γ shown in FIG. 10 is a schematic representation of the shapes of each part. In FIG. 10 , parts denoted with the same reference numerals as those of the measurement device 10 shown in FIG. 1 etc. have the same functions as those of the measurement device 10.

[0039] 10, the measuring device 10γ has an arc-shaped first support portion 13γ and a turntable-shaped second support portion 14γ instead of the first support portion 13 and the second support portion 14 of the measuring device 10 according to the first embodiment. Except for this, the measuring device 10γ is similar to the measuring device 10 according to the first embodiment.

[0040] In the example shown in the unrotated view of FIG. 10 , the arc-shaped first support portion 13γ directly supports the microphone 11 so that the sound receiving point 11X is located at the rotation center 12γ. The second support portion 14γ supports the first support portion 13γ at its lower end. In the example shown in the rotated view of FIG. 10 , the first motor 15γ rotates the first support portion 13γ counterclockwise to rotate it vertically so that the position of the sound receiving point 11X remains constant. The second motor 16γ rotates the second support portion 14γ horizontally. As a result, the orientation of the sound receiving point 11X of the microphone 11 is changed from the orientation shown in the unrotated view of FIG. 10 to the orientation shown in the rotated view of FIG. 10 .

[0041] In the example shown in Fig. 10, the arc-shaped first support portion 13γ directly supports the microphone 11 so that the sound receiving point 11X is located at the rotation center 12γ. However, the first support portion 13γ may directly or indirectly support the microphone 11 so that the sound receiving point 11X is located in the air a predetermined distance away from the rotation center 12γ. For example, the first support portion 13γ may support the microphone 11 via a boom 18 or the like shown in Fig. 1 so that the sound receiving point 11X is located in the air a predetermined distance away from the rotation center 12γ. In this case, the rotation of the first motor 15γ and the second motor 16γ changes the position of the sound receiving point 11X as well as the orientation of the sound receiving point 11X.

[0042] 6. Fifth Embodiment A measurement system according to one aspect of the present disclosure is a measurement system for performing acoustic measurement, and includes a measurement device and an information processing device. Hereinafter, a measurement system 1 according to the fifth embodiment will be described with reference to Fig. 11. Fig. 11 is a block diagram showing an example of the measurement system according to the fifth embodiment.

[0043] In the example shown in FIG. 11, the measurement system 1 is a measurement system for performing acoustic measurements, and includes a measurement device 10δ, a PC (information processing device) 30, a sound source 50, and an audio interface (information processing device) 70.

[0044] 11 , the measuring device 10δ further includes a sensor 23, wheels 24, and a wheel motor 25 in addition to the components of the measuring device 10 according to the first embodiment. In the example shown in FIG. 11 , the sensor 23 detects the positions of the microphone 11 and the measuring device 10δ. The wheel motor 25 drives the wheels 24. Specifically, the wheel motor 25 rotates the wheels 24.

[0045] In the example shown in FIG. 11, the PC 30 includes an ASIO (Audio Stream Input Output) driver 31, a control unit 32, a display unit 33, an input receiving unit 34, a storage unit 35, and an acquisition unit 36.

[0046] The acquisition unit 36 ​​acquires various types of information. In the example shown in Fig. 11 , the acquisition unit 36 ​​acquires, via a USB (Universal Serial Bus) cable, angle information related to the angle of the microphone 11 measured by the measurement unit 17, and position information related to the positions of the microphone 11 and the measuring device 10δ detected by the sensor 23. In the example described above, the acquisition unit 36 ​​acquires the angle information and position information via a USB cable, but the method for acquiring the angle information and position information is not particularly limited, and for example, the information may be acquired via a LAN (Local Area Network), the Internet, or the like, instead of via a USB cable.

[0047] The ASIO driver 31 transmits and receives signals to and from the audio interface 70. For example, the ASIO driver 31 transmits and receives various signals, such as picked-up signals and measurement signals, to and from the audio interface 70.

[0048] The control unit 32 controls the entire PC 30. The control unit 32 is configured, for example, by one or more processors having an internal memory in which programs defining each processing procedure and control data are stored, and the processor executes each process using the programs and internal memory. Examples of the control unit 32 include electronic circuits such as a CPU, MPU, and GPU, as well as integrated circuits such as an ASIC and FPGA. In the example shown in FIG. 11 , the control unit 32 has a measurement tool 321, a setting unit 322, a motor control unit 323, a determination unit 324, and a wheel motor control unit 325.

[0049] The measurement tool 321 is a tool for measuring the reverberation characteristics at a measurement position or at the position of the measurement device 10δ in a measurement environment, such as the position of the measurement device 10δ in a specified room. The measurement position refers to the position of the microphone 11 when acoustic measurement is performed, for example, the position of the microphone 11 when acoustic measurement is performed in the measurement environment. The measurement position, which is the position of the microphone 11, may include the angle (orientation) of the microphone 11. The measurement position is moved by rotation of the first support part 13 by the first motor 15 or rotation of the second support part 14 by the second motor 16. Furthermore, the measurement position may be moved along with the movement of the measurement device 10δ by the wheels 24.

[0050] The setting unit 322 sets a measurement position, which is the position of the microphone 11 when acoustic measurement is performed. For example, the setting unit 322 sets the measurement position, which is the position of the microphone 11 when acoustic measurement is performed, in accordance with input information received by the input receiving unit 34. As an example, the setting unit 322 sets the angle of the microphone 11 and the position of the measuring device 10δ in a specified room. As another example, the setting unit 322 sets only the angle of the microphone 11. In the example shown in FIG. 11 , the setting unit 322 performs various settings in addition to the measurement position, such as setting the position of the measuring device 10δ in the measurement environment, such as a specified point in a specified room, initializing the PC 30 and the measuring device 10δ, setting the origin of the measurement range, setting the ASIO driver 31, setting the type of measurement signal, and setting the angle of the first support unit 13 and the angle of the second support unit 14. The setting unit 322 rotates the first support unit 13 and the second support unit 14 so that the angles of the first support unit 13 and the second support unit 14 correspond to the set measurement position, and calculates the rotation angle of the first support unit 13 and the rotation angle of the second support unit 14. Based on the setting information regarding the measurement position and the position information detected by the sensor 23, the setting unit 322 calculates the number of rotations of the wheels 24 by the wheel motor 25 for moving the measuring device 10δ so that the microphone 11 is positioned at the measurement position.

[0051] The motor control unit 323 controls the rotation angle of the first support unit 13 by the first motor 15 and the rotation angle of the second support unit 14 by the second motor 16, based on the angle of the microphone 11 measured by the measurement unit 17. For example, the setting unit 322 calculates the rotation angle of the first support unit 13 by the first motor 15 and the rotation angle of the second support unit 14 by the second motor 16, based on the angle of the microphone 11 measured by the measurement unit 17 and indicated by the angle information acquired by the acquisition unit 36. The motor control unit 323 causes the first motor 15 to rotate the first support unit 13 by the rotation angle of the first support unit 13 calculated by the setting unit 322, and causes the second motor 16 to rotate the second support unit 14 by the rotation angle of the second support unit 14 calculated by the setting unit 322. In this case, the motor control unit 323 outputs control signals to the first motor 15 and the second motor 16 via, for example, a USB cable, for controlling the rotation of the first support unit 13 by the first motor 15 and the rotation of the second support unit 14 by the second motor 16. As a result, the motor control unit 323 controls the position and angle of the microphone 11, which is the measurement position, based on the angle of the microphone 11 measured by the measurement unit 17. In the example described above, the motor control unit 323 outputs control signals to the first motor 15 and the second motor 16 via a USB cable, but the control signals can be output by any means; for example, the control signals may be output via a LAN, the Internet, or the like, instead of a USB cable.

[0052] The determination unit 324 determines whether acoustic measurement has been performed at least at one of the measurement positions set by the setting unit 322 and the position of the measuring device 10δ. For example, the determination unit 324 determines whether acoustic measurement has been completed at all measurement positions indicated by the setting information set by the setting unit 322.

[0053] The wheel motor control unit 325 controls the number of rotations of the wheels 24 driven by the wheel motor 25 based on the position information detected by the sensor 23. For example, the setting unit 322 calculates the number of rotations of the wheels 24 driven by the wheel motor 25 to move the measuring device 10δ so that the microphone 11 is located at the measurement position, based on the position information detected by the sensor 23 and acquired by the acquisition unit 36, and the setting information related to the measurement position. The wheel motor control unit 325 causes the wheel motor 25 to rotate the wheels 24 by the number of rotations calculated by the setting unit 322. In this case, the wheel motor control unit 325 outputs a control signal to the wheel motor 25 via, for example, a USB cable, for controlling the rotation of the wheels 24 driven by the wheel motor 25. As a result, the wheel motor control unit 325 controls the position of the measuring device 10δ within the measurement environment, such as a predetermined point in a predetermined room, based on the position information detected by the sensor 23, and controls the position of the microphone 11 along with the position of the measuring device 10δ. In the above example, the wheel motor control unit 325 outputs a control signal to the wheel motor 25 via a USB cable, but the control signal can be output by any means, and for example, instead of a USB cable, the control signal may be output via a LAN, the Internet, etc.

[0054] The display unit 33 displays various information such as measurement information. Measurement information refers to information about the measurement results and measurement conditions of acoustic measurement. Measurement results include, for example, raw data such as the sound acquired by the microphone 11 and the collected signal converted from the acquired sound by the audio interface 70. Measurement conditions include, for example, information about various measurement conditions during measurement, such as the measurement date and time, temperature, humidity, name of the person making the measurement, shape information about the measurement environment, measurement location, information about the measurement system 1, and measurement signals. Examples of the name of the person making the measurement include, for example, the name of the operator. Examples of shape information about the measurement environment include, for example, 3D shape information about the measurement environment. Examples of information about the measurement system 1 include, for example, information about the sound source 50, the microphone 11 in the measurement device 10δ, the version of the measurement tool 321 in the PC 30, and the equipment of the audio interface 70. Examples of the display unit 33 include a display or touch panel of a PC (personal computer). If the display unit 33 is a touch panel, the display unit 33 also functions as the input receiving unit 34.

[0055] The input receiving unit 34 receives input of various information. For example, the input receiving unit 34 receives input of information relating to measurement conditions such as measurement positions from the user.

[0056] The storage unit 35 stores various information such as measurement information. Examples of the storage unit 35 include storage devices such as HDDs (Hard Disk Drives), SSDs (Solid State Drives), and optical disks, as well as data-rewritable semiconductor memories such as RAMs (Random Access Memory), flash memories, and NVSRAMs (Non Volatile Static Random Access Memory). The storage unit 35 stores an OS (Operating System) and various programs executed by the PC 30.

[0057] The sound source 50 outputs sound to the microphone 11. For example, when the sound source 50 receives a measurement signal from the audio interface 70, the sound source 50 outputs sound to the microphone 11 based on the measurement signal. An example of the sound source 50 is a speaker.

[0058] The audio interface 70 functions as an output control unit that outputs sound from the sound source 50. It converts the sound acquired by the microphone into a picked-up sound signal, and converts the sound output from the sound source 50 into a measurement signal. The audio interface 70 transmits and receives the picked-up sound signal and the measurement signal to and from the ASIO driver 31.

[0059] Next, an example of measurement processing by the measurement system 1 according to the fifth embodiment will be described with reference to Fig. 12. Fig. 12 is a flowchart showing an example of measurement processing by the measurement system according to the fifth embodiment.

[0060] In step S1, the control unit 32 of the PC 30 starts up the measurement system 1. For example, the control unit 32 starts up each unit of the PC 30, including the setting unit 322.

[0061] In step S2, the setting unit 322 of the PC 30 performs initial settings. For example, the setting unit 322 initializes the PC 30 and the measuring device 10δ, sets the origin of the measurement range, and sets the ASIO driver 31.

[0062] In step S3, the setting unit 322 sets the measurement conditions, for example, the setting unit 322 sets the measurement position, which is the position of the microphone 11 when acoustic measurement is performed, and the type of measurement signal.

[0063] In step S4, the measurement device 10δ starts a series of steps to perform acoustic measurements at one or more measurement positions.

[0064] In step S5, the measuring device 10δ moves so that the microphone 11 is located at the measurement position. For example, the wheel motor control unit 325 outputs a control signal to the wheel motor 25 to rotate the wheels 24 by a number of rotations that will move the measuring device 10δ so that the microphone 11 is located at the measurement position. The wheel motor 25 rotates the wheels 24 based on the control signal, thereby moving the measuring device 10δ so that the microphone 11 is located at the measurement position.

[0065] In step S6, the motor control unit 323 of the PC 30 controls the first motor 15 and the second motor 16 to change the orientation of the microphone 11. For example, the motor control unit 323 controls the first motor 15 and the second motor 16 based on the measurement angle indicated by the setting information set by the setting unit 322 and angle information indicated by the angle measured by the measurement unit 17, so that the angle and orientation of the microphone 11 at the measurement position become the state indicated by the setting information. Specifically, the motor control unit 323 controls the rotation angle of the first support unit 13 caused by the first motor 15 and the rotation angle of the second support unit 14 caused by the second motor 16 so as to achieve the above-mentioned state.

[0066] In step S7, the measuring device 10δ performs acoustic measurement. For example, the control unit 32 of the PC 30 causes the audio interface 70 to output sound from the sound source 50 via the ASIO driver 31. The microphone 11 of the measuring device 10δ acquires (records) the sound output (played back) from the sound source 50 at a measurement position, which is the position of the microphone 11 moved together with the measuring device 10δ by the wheels 24, and at a direction of the microphone 11 changed by control of the first motor 15 and the second motor 16 by the motor control unit 323. The audio interface 70 converts the sound recorded by the microphone 11 into a sound pickup signal, converts the sound played back from the sound source 50 into a measurement signal, and transmits the signal to the ASIO driver 31.

[0067] In step S8, the determination unit 324 of the PC 30 determines whether acoustic measurement has been completed at all measurement positions indicated by the setting information. If the determination unit 324 determines that acoustic measurement has been completed at all measurement positions indicated by the setting information (Yes in step S8), the determination unit 324 ends the acoustic measurement. If the determination unit 324 determines that acoustic measurement has not been completed at all measurement positions indicated by the setting information (No in step S8), the process returns to step S5. Before returning to step S5, the setting unit 322 may reset the measurement conditions for measuring measurement positions other than those already measured.

[0068] 7. Modifications The components of each illustrated section are conceptual functional components and do not necessarily have to be physically configured as shown in Figure 11. In other words, the specific form of distribution and integration of the devices is not limited to that shown in Figure 11, and all or part of them can be functionally or physically distributed or integrated in any unit depending on various loads, usage conditions, etc. The same applies to the following embodiments.

[0069] As an example, the control unit 32 of the PC 30 may be composed of multiple devices: a control unit having a measurement tool 321, a setting unit 322, and a determination unit 324; and a control device (e.g., a control box, which is a box-shaped control device) having a motor control unit 323 external to the PC 30. In this case, the motor control unit 323 is connected to the PC 30 via a USB cable. The motor control unit 323 controls the rotation of the first support unit 13 by the first motor 15 and the rotation of the second support unit 14 by the second motor 16 based on the rotation angles of the first support unit 13 and the second support unit 14 calculated by the setting unit 322 of the PC 30 via the USB cable. In the example described above, the motor control unit 323 is connected to the PC 30 and the first and second motors 15 and 16 via a USB cable. However, the method for connecting the motor control unit 323 to the PC 30, the first motor 15, and the second motor 16 is not particularly limited, and may be, for example, a method for connecting via a LAN, the Internet, or the like.

[0070] As another example, at least a part of the control unit 32, such as the acquisition unit 36 ​​and the motor control unit 323, may be provided in the measuring device 10δ instead of the PC 30. In this case, the acquisition unit 36 ​​of the measuring device 10δ acquires angle information measured by the measurement unit 17 of the measuring device 10δ and position information detected by the sensor 23, and the motor control unit 323 of the measuring device 10δ controls the first motor 15 and the second motor 16 based on the angle information and position information acquired by the acquisition unit 36.

[0071] 8. Sixth Embodiment An information processing device of a measurement system according to one aspect of the present disclosure may display measurement positions where acoustic measurement has not been performed and measurement positions where acoustic measurement has been performed in different display modes. A measurement system 1α according to a sixth embodiment will now be described with reference to Fig. 13. Fig. 13 is a block diagram illustrating an example of a measurement system according to the sixth embodiment.

[0072] In the example shown in Figure 13, the measurement system 1α has a PC 30α instead of the PC 30. Except for this, the measurement system 1α is similar to the measurement system 1 according to the fifth embodiment. The PC 30α has a control unit 32α instead of the control unit 32 in the fifth embodiment. Except for this, the PC 30α is similar to the PC 30 in the fifth embodiment. The control unit 32α further has a display control unit 326. Except for this, the control unit 32α is similar to the control unit 32 in the fifth embodiment.

[0073] The display control unit 326 causes the display unit 33 to display, in different display modes, measurement positions at which acoustic measurement has not been performed and measurement positions at which acoustic measurement has been performed, among the measurement positions set by the setting unit 322. An example of display control by the display control unit 326 will be described below with reference to Fig. 14. Fig. 14 is a diagram for describing an example of display control.

[0074] In the example shown in FIG. 14 , a case will be described in which a user uses a measurement app to input information regarding measurement conditions, such as measurement positions, into a touch panel in which the input accepting unit 34 and the display unit 33 are integrated. The following also describes a case in which the user touches a circular measurement position as a UI (User Interface) element, and the user's input is accepted by the input accepting unit 34. In this case, the setting unit 322 sets the location of the user's touch accepted by the input accepting unit 34 as the measurement position. As shown in the diagram of FIG. 14 before acoustic measurement starts, the display control unit 326 displays the measurement positions set by the setting unit 322, at which acoustic measurement has not been performed, as red circular measurement positions 210 on the display unit 33. In the example shown in the diagram of FIG. 14 before acoustic measurement starts, Azimuth [deg] corresponds to the horizontal direction described above, and Elevation [deg] corresponds to the vertical direction described above.

[0075] The display control unit 326 causes the display unit 33 to display, among the measurement positions set by the setting unit 322, measurement positions at which acoustic measurement has not been performed in a display mode different from that of measurement positions at which acoustic measurement has been performed. For example, when acoustic measurement has been performed at five measurement positions, the display control unit 326 causes the display unit 33 to display the five measurement positions 210X in a color different from that of the measurement positions 210 at which acoustic measurement has not been performed, as shown in the diagram of FIG. 14 after acoustic measurement at the five measurement positions has been completed. As an example, the display control unit 326 changes the color of the measurement positions 210X at which acoustic measurement has been performed from a red circle to a green circle and displays them on the display unit 33.

[0076] 9. Seventh Embodiment An information processing device of a measurement system according to one aspect of the present disclosure may transmit measurement results of acoustic measurement and measurement information related to various measurement conditions obtained by acoustic measurement according to an embodiment to a specific server. In this way, the information processing device may provide the measurement information to a third party as a database for various uses, such as providing the measurement information to a third party as a database to contribute to business development. Below, a measurement system 1β according to a seventh embodiment will be described using FIG. 15. FIG. 15 is a block diagram illustrating an example of a measurement system according to the seventh embodiment.

[0077] 15, the measurement system 1β further includes a PC 30β instead of the PC 30. Except for this, the measurement system 1β is similar to the measurement system 1 according to the fifth embodiment.

[0078] The PC 30β further includes a communication unit (transmitter) 37. The communication unit 37 receives data from and transmits data to other devices via an external network or a USB cable. In the example shown in FIG. 15 , the communication unit 37 transmits measurement information related to the acoustic measurement results and measurement conditions to a server 90 that can be accessed only by entities authorized to use the measurement information. For example, the communication unit 37 uploads and manages the measurement information to the server 90. The communication unit 37 may further transmit angle information and position information acquired from the measuring device 10δ by the acquisition unit 36 ​​to the server 90. This allows the user of the device 200 to access the server 90 and download and use data such as measurement information, including acoustic measurement results, from the server 90. The entities authorized to use the measurement information are not particularly limited as long as they can be granted authorization to use the measurement information. Examples include the device 200 authorized to use the measurement information and a user authorized to use the measurement information. The communication unit 37 may be, for example, a network interface controller (NIC) that communicates via a LAN, the Internet, or the like.

[0079] The server 90 is not particularly limited as long as it is a server that can be accessed only by those who have been given permission to use the measurement information, and examples thereof include a cloud server, etc. Measurement information related to various measurement conditions includes, but is not limited to, measurement date and time, temperature, humidity, operator name, 3D shape information of the measurement environment, measurement position within the measurement environment, substrate information (speaker, microphone, audio interface), measurement tool version, measurement signal, measurement position, etc.

[0080] 15 , the server 90 includes a communication unit 91, a control unit 92, and a storage unit 93. The server 90 acquires measurement information related to the results of acoustic measurement and measurement conditions from the PC 30β via the communication units 91 and 37, and stores the measurement information in the storage unit 93. When the device 200 accesses the server 90 and inputs desired conditions, the server 90 may store the measurement information in the storage unit 93 so that the device 200 can download measurement information such as the measurement results of acoustic measurement that meets the conditions.

[0081] The communication unit 91 receives measurement information from the PC 30β and transmits the measurement information to the device 200. The communication unit 91 may be, for example, a NIC that communicates via a LAN, the Internet, or the like.

[0082] The control unit 92 controls the entire server 90. The control unit 92 is configured, for example, by one or more processors having an internal memory in which programs defining each processing procedure and control data are stored, and the processor executes each process using the programs and internal memory. Examples of the control unit 92 include electronic circuits such as a CPU, MPU, and GPU, as well as integrated circuits such as an ASIC and FPGA.

[0083] The storage unit 93 stores various information such as measurement information. For example, the storage unit 93 registers the measurement information in a database. Examples of the storage unit 93 include storage devices such as HDDs, SSDs, and optical disks, as well as data-rewritable semiconductor memories such as RAMs, flash memories, and NVSRAMs. The storage unit 93 stores the OS and various programs executed by the server 90.

[0084] An example of transmission of measurement information by the communication unit 37 of the PC 30β will be described below with reference to Fig. 16. Fig. 16 is a diagram for explaining an example of transmission of measurement information.

[0085] In the example shown in FIG. 16 , the communication unit 37 of the PC 30β uploads the measurement information to the server 90 so that the measurement information can be used by the device 200 (users of the terminals 150, 170, and 190, and the audio rendering system). Examples of the terminals 150, 170, and 190 include the PC 30β, which performs the acoustic measurement, and the terminals of users authorized to use the measurement information by the user of the measuring device 10δ. Examples of the audio rendering system include the server 110 and terminal 130 of a content provider of games, metaverses, music, videos, etc., authorized to use the measurement information by the user of the PC 30β and the measuring device 10δ. The server 110 is not particularly limited, but may be, for example, a cloud server, as shown in FIG. 16 . In the example shown in FIG. 16 , the terminals 130, 150, and 190 are all smartphones, but these terminals are not limited to smartphones and may be, for example, PCs. As shown in FIG. 16, a terminal 170 for content creators is typically a PC or the like, but is not particularly limited as long as it is capable of content creation, and may be, for example, a smartphone or the like.

[0086] In Case 1, the communication unit 37 of the PC 30β uploads measurement information for the content distributor to the server 90. In this case, the server 110 of the content distributor or the terminal 130, which is a client device owned by the user, acquires measurement results such as RIR and performs rendering processing. In other words, the end user may perform rendering processing on the measurement information acquired by the terminal 130 and listen to the results directly via headphones or the like, or may acquire from the terminal 150 the results of rendering processing performed by the server 110 using the measurement information acquired from the server 90 and listen to the rendering results via headphones or the like.

[0087] In Case 1, as an example, it is assumed that a measurement signal such as a content object signal is distributed from the server 110, and the terminal 130, which is a client device, performs rendering processing. In this case, the terminal 130, such as a smartphone, performs rendering processing using an RIR specified (determined) for each piece of content by the content creator, who is the creator of the content. Furthermore, the terminal 130 performs rendering processing so that a recorded sound source is distributed as an object including three-dimensional position information and is restored and played back in space during playback. As another example, it is also assumed that the server 110 performs rendering processing rather than the terminal 130, which is a client device owned by a user. In this case, the server 110 performs rendering processing using the RIR and distributes the rendering results to an end user, etc.

[0088] In Case 2, the communication unit 37 of the PC 30β uploads measurement information for the content creator to the server 90. In this case, the terminal 170 of the content creator renders the content based on the measurement information acquired from the server 90. For example, the content creator uses a DAW (Digital Audio Workstation) on the terminal 170, which is a PC, to create content as a rendering result using the RIR included in the measurement information. In this case, the content creator applies the RIR included in the measurement information to the reverb used to express the sound field during the production process to create the content.

[0089] In Case 3, the communication unit 37 of the PC 30β uploads measurement information for the end user to the server 90. In this case, the end user's terminal 190 acquires measurement information including RIRs from the server 90. The end user determines (designates) an RIR to be used to select a sound field mode from among the RIRs included in the measurement information acquired by the terminal 190. The end user uses the designated RIR to select a sound field mode for a device capable of switching sound field modes, such as an AV amplifier or in-car audio. The end user applies the selected sound field mode to music and listens to it. The music listened to by the user is not particularly limited and may be, for example, music on a CD owned by the end user or music streamed by a distribution service. Furthermore, the device used by the user to listen to the music is not particularly limited and may be, for example, an amplifier and speakers, a smartphone and headphones, etc. Case 3 also includes a case where the rendering process is performed using an RIR designated by the end user instead of the RIR designated (determined) by the content creator who produced the content in Case 1.

[0090] 10. Eighth Embodiment An information processing device of a measurement system according to one aspect of the present disclosure may convert the format of the measurement information based on the measurement position and transmit the measurement information in the converted format to a server. A measurement system 1γ according to an eighth embodiment will be described below with reference to FIG. 17 . FIG. 17 is a block diagram illustrating an example of a measurement system according to the eighth embodiment.

[0091] 17, the measurement system 1γ has a PC 30γ instead of the PC 30β. Except for this, the measurement system 1γ is similar to the measurement system 1β according to the seventh embodiment.

[0092] The PC 30γ has a control unit 32γ instead of the control unit 32β in the seventh embodiment. Except for this, the PC 30γ is the same as the PC 30β in the seventh embodiment.

[0093] The control unit 32γ further includes a conversion unit 327. Except for this, the control unit 32γ is similar to the control unit 32β in the seventh embodiment. The conversion unit 327 converts the format of the measurement information based on the measurement position. For example, the conversion unit 327 converts the format of the measurement information into a format such as Ambisonics or Higher Order Ambisonics (HOA) based on the measurement position.

[0094] For example, the converter 327 converts the format of the measurement information into the Ambisonics format so that the order of Ambisonics increases as the number of measurement positions increases. In this case, the converter 327 determines the order of Ambisonics and also estimates Ambisonics coefficients, and executes encoding processing to convert the format of the measurement information into a format such as Ambisonics.

[0095] The communication unit 37 transmits the measurement information whose format has been converted by the conversion unit 327 to the server 90. For example, the communication unit 37 uploads the measurement information whose format has been converted to the server 90.

[0096] In the above example, the control unit 32γ of the PC 30γ has the conversion unit 327, but the control unit 92 of the server 90 may have the conversion unit 327. In this case, the conversion unit 327 converts the format of the measurement information transmitted to the server 90 based on the measurement position.

[0097] 11. Ninth Embodiment An information processing device of a measurement system according to an aspect of the present disclosure may estimate the measurement result of acoustic measurement at a position where acoustic measurement has not been performed, based on the measurement result of acoustic measurement at one or more measurement positions. The information processing device may estimate the measurement result of acoustic measurement when a sound source is installed at a position where acoustic measurement has not been performed, based on the measurement result of acoustic measurement using one or more sound sources. A measurement system 1δ according to a ninth embodiment will be described below with reference to FIG. 18. FIG. 18 is a block diagram illustrating an example of a measurement system according to the ninth embodiment.

[0098] 18, the measurement system 1δ has a PC 30δ instead of the PC 30β. Except for this, the measurement system 1δ is similar to the measurement system 1β according to the seventh embodiment.

[0099] The PC 30δ has a control unit 32δ instead of the control unit 32 in the seventh embodiment. Except for this, the PC 30δ is similar to the PC 30β in the seventh embodiment.

[0100] The control unit 32δ further includes an estimation unit 328. Except for this, the control unit 32δ is similar to the control unit 32 in the seventh embodiment. The estimation unit 328 performs at least one of a first estimation that estimates the measurement results of acoustic measurement at a position where acoustic measurement is not performed based on the measurement results of acoustic measurement at one or more measurement positions, and a second estimation that estimates the measurement results of acoustic measurement when a sound source 50 is installed at a position where acoustic measurement is not performed based on the measurement results of acoustic measurement by one or more sound sources 50. An example of estimation of the measurement results by the estimation unit 328 will be described below with reference to FIG. 19 . FIG. 19 is a diagram for describing an example of estimation of the measurement results.

[0101] 19(A) , the estimation unit 328 performs a first estimation based on the acoustic measurement results at a non-measurement position 210Z, which is a position where no acoustic measurement has been performed and is indicated by the position information acquired by the acquisition unit 36, based on the acoustic measurement results at a plurality of measurement positions 210X and 210Y indicated by the measurement information. For example, if the non-measurement position 210Z is located at the center between the measurement position 210X and the measurement position 210Y, the estimation unit 328 estimates that the measurement result at the non-measurement position 210Z is a weighted average of the measurement results at the measurement position 210X and the measurement result at the measurement position 210Y. If the measurement information further includes measurement conditions and the position information further includes the measurement position 210X, the measurement position 210Y, the position of the sound source 50X, and the position of the sound source 50Y, the estimation unit 328 may estimate the acoustic measurement result at the non-measurement position 210Z based on the measurement conditions and at least one of these positions. Note that the measurement position 210X shown in FIG. 19(A) is merely an example of a measurement position where acoustic measurement was performed, and does not have to be the same position as the measurement position 210X shown in FIG. 14, which is an example of a measurement position where acoustic measurement was performed, and is not particularly limited as long as it is a measurement position where acoustic measurement was performed.

[0102] 20(B), the estimation unit 328 performs a second estimation based on the measurement results of the acoustic measurements by the multiple sound sources 50X and 50Y indicated by the measurement information to estimate the measurement results of the acoustic measurement that would occur if a non-measured sound source 50Z, a sound source for which no acoustic measurement was performed, were installed at a position for which no acoustic measurement was performed that was indicated by the position information acquired by the acquisition unit 36. For example, the estimation unit 328 estimates the measurement results of the acoustic measurement that would occur if a non-measured sound source 50Z were installed at a position for which no acoustic measurement was performed and sound were output from the non-measured sound source 50Z, based on the measurement results of the acoustic measurements when sound is output from the multiple sound sources 50X and 50Y. Furthermore, when the position of the non-measured sound source 50Z is located at the center between the sound sources 50X and 50Y, the estimation unit 328 estimates that the measurement result of the non-measured sound source 50Z is the weighted average of the measurement results by the sound source 50X and the measurement results by the sound source 50Y. When the measurement information further includes measurement conditions and the position information further includes the measurement position 210X, the position of the sound source 50X, and the position of the sound source 50Y, the estimation unit 328 may estimate the measurement results of the acoustic measurement by the non-measured sound source 50Z further based on the measurement conditions and at least one of these positions.

[0103] In the above example, the control unit 32δ of the PC 30δ has the estimation unit 328, but the control unit 92 of the server 90 may have the estimation unit 328.

[0104] 12. Example of Hardware Configuration The various devices described above, such as the PC 30 and the server 90, may be configured to include a computer. An example will be described with reference to FIG.

[0105] 20 is a block diagram showing an example of the hardware configuration of the device. The illustrated computer 1000 includes a CPU 1100, a RAM 1200, a ROM (Read Only Memory) 1300, a HDD 1400, a communication interface 1500, and an input / output interface 1600. The components of the computer 1000 are connected by a bus 1050.

[0106] The CPU 1100 operates and controls each component based on programs stored in the ROM 1300 or the HDD 1400. For example, the CPU 1100 loads the programs stored in the ROM 1300 or the HDD 1400 into the RAM 1200 and executes processing corresponding to the various programs.

[0107] The ROM 1300 stores boot programs such as a Basic Input Output System (BIOS) that is executed by the CPU 1100 when the computer 1000 is started, and programs that depend on the hardware of the computer 1000 .

[0108] HDD 1400 is a computer-readable recording medium that non-temporarily records programs executed by CPU 1100 and data used by such programs. Specifically, HDD 1400 is a recording medium that records programs for executing each operation related to the present disclosure, which are an example of program data 1450.

[0109] The communication interface 1500 is an interface for connecting the computer 1000 to an external network 1550 (e.g., the Internet). For example, the CPU 1100 receives data from other devices and transmits data generated by the CPU 1100 to other devices via the communication interface 1500.

[0110] The input / output interface 1600 is an interface for connecting the input / output device 1650 and the computer 1000. For example, the CPU 1100 receives data from an input device such as a keyboard or a mouse via the input / output interface 1600. The CPU 1100 also transmits data to an output device such as a display, a speaker, or a printer via the input / output interface 1600. The input / output interface 1600 may also function as a media interface for reading programs and the like recorded on a predetermined recording medium. Examples of media include optical recording media such as a DVD (Digital Versatile Disc) or a PD (Phase Change Rewritable Disc), magneto-optical recording media such as an MO (Magneto-Optical Disk), tape media, magnetic recording media, and semiconductor memories.

[0111] At least some of the functions of the measuring device 10, PC 30, server 90, etc. described above may be realized, for example, by CPU 1100 of computer 1000 executing a program loaded on RAM 1200. Furthermore, programs and the like according to the present disclosure are stored in HDD 1400. While CPU 1100 reads and executes program data 1450 from HDD 1400, as another example, these programs may be acquired from another device via external network 1550.

[0112] 13. Examples of Effects The technology described above can be specified, for example, as follows. One of the disclosed technologies is a measurement device 10. As described with reference to FIGS. 1 to 10 , the measurement device 10 is for performing acoustic measurement and includes one or more microphones 11 that acquire sound output from a sound source at a sound receiving point 11X, a first support 13 that directly or indirectly supports the microphone 11 so that the sound receiving point 11X is located at the center of rotation 12 or in the air a predetermined distance away from the center of rotation 12, a second support 14 that supports the first support 13 at a lower end of the first support 13, a first motor 15 that rotates the first support 13 in a vertical direction, and a second motor 16 that rotates the second support 14 in a horizontal direction.

[0113] As a result, by controlling the first support unit 13 and the second support unit 14, the measuring device 10 can position the microphone 11 at the center of rotation 12 or at multiple points at a predetermined distance from the center of rotation 12. Furthermore, because the sound receiving point 11X is supported in the air by the first support unit 13, the measuring device 10 can perform acoustic measurement in a state where there are no structures, such as the first support unit 13, around the sound receiving point 11X that would affect the acoustic measurement results. In this way, the measuring device 10 can change the position and orientation of the microphone 11 with a high degree of freedom, and can suppress the influence of structures on the acoustic measurement.

[0114] 1 to 10 , the center of rotation 12 may be the intersection of the rotation axis of the first support part 13 and the rotation axis of the second support part 14. By controlling the first support part 13 and the second support part 14, the measuring device 10 makes it possible to position the microphone 11 at such center of rotation 12 or at a plurality of points that are a certain distance from the center of rotation 12.

[0115] 1 to 10 , the first support unit 13 directly or indirectly supports the microphone 11 so that the sound receiving point 11X is located at the center of rotation 12, and the first motor 15 may rotate the first support unit 13 in the vertical direction so that the position of the sound receiving point 11X remains constant. This enables the measurement device 10 to orient the microphone 11 in multiple directions while positioning the sound receiving point 11X at the center of rotation 12. As a result, the measurement device 10 can perform acoustic measurements in an environment similar to that in which the sound receiving point 11X is placed on the surface of a virtual sphere that is zero centimeters away from the center of rotation 12.

[0116] 1 to 10 , at least one of the first motor 15 and the second motor 16 may be installed adjacent to the second support portion 14. This allows the measuring device 10 to reduce the influence of noise caused by the operation of the first motor 15 and the second motor 16. Furthermore, the measuring device 10 allows acoustic measurement to be performed in a state where there are no structures around the sound receiving point 11X of the microphone 11 that may affect the acoustic measurement results.

[0117] 1 to 10 , the measuring device 10 may further include a measuring unit 17 that measures the angle of the microphone 11. This allows the measuring device 10 to adjust for errors in the position of the microphone 11 that occur due to a lack of power of the first motor 15 or the second motor 16 or in the process of transmitting power, using angle information related to the angle of the microphone 11 measured by the measuring unit 17 as feedback. Furthermore, the measuring device 10 compensates for deterioration in the accuracy of the position at which the microphone 11 is installed due to the driving of these motors, thereby making it possible to improve the accuracy of the position of the microphone 11.

[0118] 1 to 10 , the measuring device 10 may further include a third motor 19 that directly or indirectly drives the microphone 11 so that the distance from the center of rotation 12 to the microphone 11 is variable. This enables the measuring device 10 to perform acoustic measurements in an environment similar to that in which sound receiving points 11X are placed on the surface of multiple imaginary spheres at different distances from the center of rotation 12. In other words, the measuring device 10 enables acoustic measurements that obtain measurement results according to multiple algorithms at different distances from the center of rotation 12.

[0119] As described with reference to Figures 1 to 10, the microphone 11 may include a spherical array microphone in which multiple microphones 11 are installed in a single housing. By including multiple microphones 11 in the microphone 11, the measurement device 10 can obtain multiple positions and orientations of the sound receiving points 11X of the microphones 11 in a single measurement, thereby improving the time efficiency of acoustic measurement. Furthermore, by using the microphone 11 that includes a compact spherical array microphone, the measurement device 10 can change the position and orientation of the microphone 11 with a higher degree of freedom.

[0120] 1 to 10 , the measuring device 10 may further include a sensor 23 that detects the position of at least one of the microphone 11 and the measuring device 10. This allows the measuring device 10 to improve the accuracy of the position of at least one of the microphone 11 and the measuring device 10. For example, by including the sensor 23 that detects the position of the microphone 11, the measuring device 10 can improve the accuracy of the position where the microphone 11 is installed, similar to when the measuring device 10 includes the measuring unit 17.

[0121] 1 to 10 , the measurement device 10 may further have wheels 24 for moving the measurement device 10, which are provided below the second support part 14. This allows the measurement device 10 to be moved to any point within the measurement environment by the wheels 24, and acoustic measurements can be performed at one or more measurement positions at that point.

[0122] 1 to 10 , the first support portion 13 may be a U-shaped support portion 13X, which supports the microphone 11 directly or indirectly at the bottom of the U-shaped support portion 13X, and may include two columnar support portions 13Y that engage the upper ends of the U-shaped support portion 13X while the U-shaped support portion 13X is rotatable in response to power transmitted from the first motor 15. By rotating the microphone 11 via the rotation of the first support portion 13, the measuring device 10 can perform acoustic measurements without any structures around the sound receiving point 11X, while positioning the sound receiving point 11X at the center of rotation 12 or a predetermined distance from the center of rotation 12.

[0123] 1 to 10 , the U-shaped support 13X may directly or indirectly support the microphone 11 at its bottom so that the distance between the sound receiving point 11X and each of the two columnar support portions 13Y is equal to or greater than a predetermined threshold. This enables the measurement device 10 to make the sound receiving point 11X less susceptible to the influence of structures, such as the two columnar support portions 13Y, on the sound receiving point 11X, for example by reducing the influence of sound reflection by these structures.

[0124] 1 to 10 , the shape of the first support part 13 may be circular or arc-shaped. By rotating the microphone 11 via the rotation of the first support part 13, the measurement device 10 can also perform acoustic measurements with the sound receiving point 11X located at the rotation center 12 or at a predetermined distance from the rotation center 12, without any structures around the sound receiving point 11X.

[0125] 11 to 19 are also disclosed technologies. The measurement system 1 is a measurement system 1 for performing acoustic measurement, and includes a measurement device 10 and an information processing device (such as a PC 30 and an audio interface 70). The measurement device 10 includes one or more microphones 11 that acquire sound output from a sound source at a sound receiving point 11X, a first support 13 that directly or indirectly supports the microphone 11 so that the sound receiving point 11X is located at a rotation center 12 or in the air a predetermined distance away from the rotation center 12, a second support 14 that supports the first support 13 at a lower end of the first support 13, a first motor 15 that rotates the first support 13 vertically, and a second motor 16 that rotates the second support 14 horizontally. The information processing device includes an output control unit (audio interface 70) that outputs sound from the sound source 50. Such a measurement system 1 also allows the position and orientation of the microphone 11 to be changed with a high degree of freedom, making it possible to suppress the influence of structures on acoustic measurement.

[0126] As described with reference to Figures 11 to 19, the measuring device 10 may further have a measuring unit 17 that measures the angle of the microphone 11, and the information processing device may further have a motor control unit 323 that controls the rotation angle of the first support unit 13 by the first motor 15 and the rotation angle of the second support unit 14 by the second motor 16 based on the angle of the microphone 11 measured by the measuring unit 17.

[0127] This allows the measurement system 1 to adjust the position error of the microphone 11 that occurs due to a power shortage or the power transmission process of the first motor 15 or the second motor 16, by using angle information related to the angle of the microphone 11 measured by the measurement unit 17 as feedback. Furthermore, the measurement system 1 can compensate for deterioration in the accuracy of the position where the microphone 11 is newly installed by driving these motors, thereby improving the accuracy of the position of the microphone 11.

[0128] 11 to 19 , the information processing device may further include a setting unit 322 that sets a measurement position, which is the position of the microphone 11 when acoustic measurement is performed, and a determination unit 324 that determines whether acoustic measurement has been performed at at least one of the measurement position set by the setting unit 322 and the position of the measuring device 10. This allows the measurement system 1 to perform acoustic measurement at at least one of the measurement position set by the setting unit 322 and the position of the measuring device 10, where the determination unit 324 determines that acoustic measurement has not been performed. Furthermore, the measurement system 1 makes it possible to reduce the occurrence of erroneous acoustic measurement being performed at at least one of the measurement position where acoustic measurement has been performed and the position of the measuring device 10.

[0129] 11 to 19 , the information processing device may further include a display control unit 326 that causes the display unit 33 to display, in different display modes, measurement positions at which acoustic measurement has not been performed and measurement positions at which acoustic measurement has been performed, among the measurement positions set by the setting unit 322. This enables the measurement system 1 to cause the display unit 33 to display, among the measurement positions set by the setting unit 322, the extent to which acoustic measurement has been performed. Furthermore, the measurement system 1 distinguishes between measurement positions at which acoustic measurement has not been performed and measurement positions at which acoustic measurement has been performed, thereby reducing the likelihood of the measurement device 10 erroneously performing acoustic measurement at measurement positions at which acoustic measurement has been performed.

[0130] 11 to 19 , the measurement device 10 may further have wheels 24 on the lower part of the second support part 14 for moving the measurement device 10 so that the microphone 11 is positioned at a measurement position. This makes it possible for the measurement system 1 to move the measurement device 10 to any point within the measurement environment using the wheels 24 and perform acoustic measurements at one or more measurement positions at that point.

[0131] 11 to 19, the information processing device may further include a communication unit 37 that transmits measurement information related to the acoustic measurement results and measurement conditions to a server 90 that can be accessed only by subjects authorized to use the measurement information. This allows the measurement system 1 to allow subjects authorized to use the measurement information to utilize the measurement information obtained by acoustic measurement.

[0132] 11 to 19 , the information processing device may further include a conversion unit 327 that converts the format of the measurement information based on the measurement location, and the communication unit 37 may transmit the measurement information whose format has been converted by the conversion unit 327 to the server 90. This enables the measurement system 1 to transmit to the server 90 the measurement information that has been converted into a format according to the measurement location.

[0133] 11 to 19 , the information processing device may further include an estimation unit 328 that performs at least one of a first estimation that estimates the measurement results of acoustic measurement at a position where acoustic measurement is not performed based on the measurement results of acoustic measurement at one or more measurement positions, and a second estimation that estimates the measurement results of acoustic measurement when a sound source is installed at a position where acoustic measurement is not performed based on the measurement results of acoustic measurement using one or more sound sources. This enables the information processing device to estimate the measurement results of acoustic measurement at a position desired by the user of the information processing device when the first estimation is performed. Furthermore, the information processing device enables the information processing device to estimate the measurement results of acoustic measurement when a sound source is installed at a position desired by the user of the information processing device when the second estimation is performed.

[0134] The effects described in this disclosure are merely examples and are not limited to the disclosed contents. Other effects may also be present.

[0135] The processes in the information processing device, the measurement device, and the server are not limited to the processes in the devices described in the above embodiments, and may be performed by any device.

[0136] The above describes embodiments of the present disclosure, but the technical scope of the present disclosure is not limited to the above-described embodiments as they are, and various modifications are possible within the scope that does not deviate from the gist of the present disclosure, and different components across various modifications may be combined as appropriate.

[0137] This technology may be related to Goal 9, "Industry, innovation, infrastructure," of the Sustainable Development Goals (SDGs) adopted at the United Nations Summit in 2015.

[0138] The present technology can also be configured as follows. (1) A measurement device for performing acoustic measurement, comprising: one or more microphones that acquire sound output from a sound source at a sound receiving point; a first support part that directly or indirectly supports the microphones so that the sound receiving point is located in the air at a center of rotation or a predetermined distance from the center of rotation; a second support part that supports the first support part at a lower end of the first support part; a first motor that rotates the first support part in a vertical direction; and a second motor that rotates the second support part in a horizontal direction. (2) The measurement device described in (1), in which the center of rotation is an intersection of a rotation axis of the first motor and a rotation axis of the second motor. (3) The measurement device described in (1) or (2), in which the first support part directly or indirectly supports the microphones so that the sound receiving point is located at the center of rotation, and the first motor rotates the first support part in a vertical direction so that the position of the sound receiving point is constant. (4) The measuring device according to any one of (1) to (3), wherein at least one of the first motor and the second motor is installed adjacent to the second support part. (5) The measuring device according to any one of (1) to (4), further comprising a measurement unit that measures the angle of the microphone. (6) The measuring device according to any one of (1) to (5), further comprising a third motor that directly or indirectly drives the microphone so that the distance from the center of rotation to the microphone is variable. (7) The measuring device according to any one of (1) to (6), wherein the microphone includes a spherical array microphone in which multiple microphones are installed in one housing. (8) The measuring device according to any one of (1) to (7), further comprising a sensor that detects the position of at least one of the microphone and the measuring device. (9) The measuring device according to any one of (1) to (8), further comprising wheels at a lower part of the second support part for moving the measuring device.(10) The measurement device according to any one of (1) to (9), wherein the first support portion has: a U-shaped support portion, the microphone being supported directly or indirectly at a bottom of the U-shaped support portion; and two columnar support portions that engage upper ends of the U-shaped support portion while the U-shaped support portion is rotatable in response to power transmitted from the first motor. (11) The measurement device according to (10), wherein the U-shaped support portion directly or indirectly supports the microphone at the bottom so that the distance between the sound receiving point and each of the two columnar support portions is equal to or greater than a predetermined threshold. (12) The measurement device according to any one of (1) to (10), wherein the shape of the first support portion is circular or arc-shaped. (13) A measurement system for performing acoustic measurements, comprising: a measurement device and an information processing device, wherein the measurement device comprises: one or more microphones that acquire sound output from a sound source at a sound receiving point; a first support portion that directly or indirectly supports the microphones so that the sound receiving point is located in air at a center of rotation or a predetermined distance from the center of rotation; a second support portion that supports the first support portion at a lower end of the first support portion; a first motor that rotates the first support portion in a vertical direction; and a second motor that rotates the second support portion in a horizontal direction, wherein the information processing device comprises an output control portion that outputs the sound from the sound source. (14) The measurement system according to (13), wherein the measurement device further comprises a measurement portion that measures the angle of the microphone, and the information processing device further comprises a motor control portion that controls the rotation angle of the first support portion caused by the first motor and the rotation angle of the second support portion caused by the second motor based on the microphone angle measured by the measurement portion. (15) The measurement system according to (13) or (14), wherein the information processing device further includes: a setting unit that sets a measurement position, which is the position of the microphone when the acoustic measurement is performed; and a determination unit that determines whether the acoustic measurement is performed at the measurement position set by the setting unit.(16) The measurement system according to (15), wherein the information processing device further includes a display control unit that causes the determination unit to display, on the display unit, measurement locations where the acoustic measurement has not been performed and measurement locations where the acoustic measurement has been performed, among the measurement locations set by the setting unit, in different display modes. (17) The measurement system according to (15) or (16), wherein the measurement device further includes wheels at a lower part of the second support unit that move the measurement device so that the microphone is positioned at the measurement location. (18) The measurement system according to any of (15) to (17), wherein the information processing device further includes a transmission unit that transmits measurement information related to the measurement results and measurement conditions of the acoustic measurement to a server that is accessible only by subjects that have been given permission to use the measurement information. (19) The measurement system according to (18), wherein the information processing device further includes a conversion unit that converts a format of the measurement information based on the measurement location, and the transmission unit transmits the measurement information whose format has been converted by the conversion unit to the server. (20) The measurement system according to any one of (15) to (19), wherein the information processing device further includes an estimation unit that performs at least one of a first estimation of an acoustic measurement result at a position where the acoustic measurement is not performed, based on the measurement result of the acoustic measurement at one or more of the measurement positions, and a second estimation of an acoustic measurement result when the sound source is installed at a position where the acoustic measurement is not performed, based on the measurement result of the acoustic measurement using one or more sound sources.

[0139] REFERENCE SIGNS LIST 10 Measuring device 11 Microphone 11X Sound receiving point 12 Center of rotation 13 First support portion 13X U-shaped support portion 13Y Pillar-shaped support portion 14 Second support portion 15 First motor 16 Second motor 17 Measuring portion 18 Boom 19 Third motor 20 Pillar-shaped portion 21 Belt 22 Base

Claims

1. A measuring device for performing acoustic measurements, comprising: one or more microphones that acquire sound output from a sound source at a sound receiving point; a first support part that directly or indirectly supports the microphones so that the sound receiving point is located at the center of rotation or in the air a predetermined distance away from the center of rotation; a second support part that supports the first support part at a lower end of the first support part; a first motor that rotates the first support part in a vertical direction; and a second motor that rotates the second support part in a horizontal direction.

2. The measuring device according to claim 1, wherein the center of rotation is an intersection of an axis of rotation of the first support part and an axis of rotation of the second support part.

3. The measuring device described in claim 1, wherein the first support part directly or indirectly supports the microphone so that the sound receiving point is located at the center of rotation, and the first motor rotates the first support part in the vertical direction so that the position of the sound receiving point is constant.

4. The measuring device according to claim 1, wherein at least one of the first motor and the second motor is installed at a position adjacent to the second support portion.

5. The measurement device according to claim 1, further comprising a measurement unit that measures the angle of the microphone.

6. The measuring device according to claim 1, further comprising a third motor that directly or indirectly drives the microphone so that the distance from the center of rotation to the microphone is variable.

7. The measuring device according to claim 1, wherein the microphone includes a spherical array microphone in which a plurality of microphones are mounted in a single housing.

8. The measurement device of claim 1, further comprising a sensor for detecting a position of at least one of the microphone and the measurement device.

9. The measuring device according to claim 1, further comprising wheels on a lower portion of said second support for moving said measuring device.

10. The measuring device described in claim 1, wherein the first support portion has: a U-shaped support portion at the bottom of which the microphone is directly or indirectly supported; and two columnar support portions that engage the upper ends of the U-shaped support portion while allowing the U-shaped support portion to rotate in response to the power transmitted from the first motor.

11. The measuring device according to claim 10, wherein the U-shaped support directly or indirectly supports the microphone at its bottom so that the distance between the sound receiving point and each of the two columnar support parts is equal to or greater than a predetermined threshold value.

12. The measuring device according to claim 1, wherein the first support portion has a circular or arcuate shape.

13. A measurement system for performing acoustic measurements, comprising: a measurement device; and an information processing device, wherein the measurement device comprises: one or more microphones for acquiring sound output from a sound source at a sound receiving point; a first support portion for directly or indirectly supporting the microphones so that the sound receiving point is located in the air at the center of rotation or a predetermined distance away from the center of rotation; a second support portion for supporting the first support portion at a lower end thereof; a first motor for rotating the first support portion in a vertical direction; and a second motor for rotating the second support portion in a horizontal direction, wherein the information processing device comprises an output control portion for outputting the sound from the sound source.

14. The measurement system described in claim 13, wherein the measuring device further has a measuring unit that measures the angle of the microphone, and the information processing device further has a motor control unit that controls the rotation angle of the first support part by the first motor and the rotation angle of the second support part by the second motor based on the angle of the microphone measured by the measuring unit.

15. The measurement system of claim 13, wherein the information processing device further comprises: a setting unit that sets at least one of a measurement position, which is the position of the microphone when the acoustic measurement is performed, and a position of the measurement device; and a determination unit that determines whether the acoustic measurement is performed at at least one of the measurement position and the position of the measurement device set by the setting unit.

16. The measurement system according to claim 15, wherein the information processing device further has a display control unit that causes the display unit to display, among the measurement positions set by the setting unit, measurement positions at which the acoustic measurement has not been performed and measurement positions at which the acoustic measurement has been performed in different display modes.

17. The measurement system of claim 15, wherein the measurement device further comprises wheels on a lower portion of the second support for moving the measurement device so that the microphone is positioned at the measurement position.

18. The measurement system according to claim 15, wherein the information processing device further has a transmission unit that transmits measurement information relating to the acoustic measurement results and measurement conditions to a server that can be accessed only by subjects that have been given permission to use the measurement information.

19. The measurement system described in claim 18, wherein the information processing device further has a conversion unit that converts a format of the measurement information based on the measurement position, and the transmission unit transmits the measurement information whose format has been converted by the conversion unit to the server.

20. The measurement system of claim 15, wherein the information processing device further comprises an estimation unit that performs at least one of a first estimation for estimating a measurement result of the acoustic measurement at a position where the acoustic measurement is not performed based on a measurement result of the acoustic measurement at one or more of the measurement positions, and a second estimation for estimating a measurement result of the acoustic measurement when the sound source is installed at a position where the acoustic measurement is not performed based on a measurement result of the acoustic measurement using one or more sound sources.

Images