Electronic musical instrument

Abstract

To provide an electronic musical instrument that behaves in a way similar to an acoustic instrument.SOLUTION: An electronic musical instrument 1 includes a pedal 12, a speed detection section 16, a speed determination section 4, and a playback section 6. The speed detection section 16 detects moving speed of the pedal 12. The speed determination section 4 determines pedal off speed when an operation of the pedal 12 is released based on the moving speed detected by the speed detection section 16. The playback section 6 reproduces pedal off sound based on the pedal off speed determined by the speed determination section 4.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to electronic musical instruments. [Background technology]

[0002] In acoustic musical instruments, noises are generated in addition to the performance sounds generated by the performance operation. In recent years, electronic musical instruments have been developed that simulate the noises unique to acoustic musical instruments in addition to the performance sounds. For example, Patent Document 1 describes an electronic musical instrument that has a keyboard with multiple keys and a damper pedal.

[0003] In the electronic musical instrument of Patent Document 1, when a key is pressed, a direct sound corresponding to that key is generated. When the damper pedal is depressed, a resonant sound consisting of damper noise corresponding to the depression of the damper pedal is generated in addition to the direct sound corresponding to the depression of the damper pedal and the pressed key. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-356769 A Summary of the Invention [Problem to be solved by the invention]

[0005] In acoustic musical instruments, in addition to the damper noise generated by depressing the damper pedal, noises due to the mechanical structure are also generated. Therefore, it is desirable to simulate such noises in order to make the behavior of electronic musical instruments closer to that of acoustic musical instruments.

[0006] It is an object of the present invention to provide an electronic musical instrument that behaves more like an acoustic musical instrument. [Means for solving the problem]

[0007] An electronic musical instrument according to one aspect of the present invention includes a pedal, a speed detection unit that detects a movement speed of the pedal, a speed determination unit that determines a pedal-off speed when operation of the pedal is released based on the movement speed detected by the speed detection unit, and a playback unit that plays a pedal-off sound based on the pedal-off speed determined by the speed determination unit. Effect of the Invention

[0008] According to the present invention, the behavior of an electronic musical instrument can be made to be closer to that of an acoustic musical instrument. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram showing a configuration of an electronic musical instrument according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing the configuration of a performance operator. [Diagram 3] FIG. 2 is a block diagram showing the configuration of a sound source unit. [Figure 4] FIG. 13 is a diagram showing a waveform of a pedal-off sound. [Diagram 5] 2 is a block diagram showing a configuration of functional sections of the electronic musical instrument; FIG. [Figure 6] 5 is a flowchart showing an example of a performance sound signal generation process executed by an electronic musical instrument. [Figure 7] 5 is a flowchart showing an example of an additional sound signal generating process executed by an electronic musical instrument. [Figure 8] 5 is a flowchart showing an example of an additional sound signal generating process executed by an electronic musical instrument. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (1) Structure of electronic musical instruments An electronic musical instrument according to an embodiment of the present invention will be described in detail below with reference to the drawings. The electronic musical instrument is, for example, an electronic keyboard instrument. Fig. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the present invention. As shown in Fig. 1, the electronic musical instrument 1 includes a performance operator 10, a setting operation section 20, a display 30, a sound source section 40, a sound system 50, a storage device 60, a CPU (Central Processing Unit) 70, a RAM (Random Access Memory) 80, a ROM (Read Only Memory) 90, a communication I / F (Interface) 100, and a bus 110.

[0011] The performance controls 10, the setting controls 20, the display 30, the sound source 40, the storage device 60, the CPU 70, the RAM 80, the ROM 90, and the communication I / F 100 are connected to a bus 110. An external device such as an external storage device 120 may be connected to the bus 110 via the communication I / F 100.

[0012] The performance operators 10 include a keyboard 11 and pedals 12 that are operated by the performer to perform the performance. The keyboard 11 may be an image of a keyboard displayed on the screen of a touch panel display described later. The pedals 12 are, for example, damper pedals. The setting operation unit 20 includes an operation switch that is operated to be turned on / off, an operation switch that is operated to be rotated, or an operation switch that is operated to be slid, etc. The setting operation unit 20 is used to adjust the volume or perform various settings including turning the power on / off.

[0013] The display 30 includes, for example, a liquid crystal display. The display 30 displays the name of the piece of music, the musical score, or various other information. The display 30 may be a touch panel display. In this case, a part or the whole of the performance controls 10 or the setting operation section 20 may be displayed on the display 30. The performer can instruct various operations by operating the display 30.

[0014] The sound source unit 40 outputs audio data based on the pitch specified by the operation of the keyboard 11. The audio data is sampling data that indicates the waveform of a sound. Hereinafter, the audio data output by the sound source unit 40 will be referred to as a sound signal. The sound system 50 includes a digital-to-analog (D / A) conversion circuit, an amplifier, and a speaker, converts the sound signal provided by the sound source unit 40 into an analog sound signal, and generates a sound based on the analog sound signal.

[0015] The storage device 60 includes a storage medium such as a hard disk, an optical disk, a magnetic disk, or a memory card, and prestores computer programs such as a sound signal generating program 61 and corresponding information 62, which will be described later. The CPU 70 executes the sound signal generating program 61 stored in the storage device 60 to perform a sound signal generating process, which will be described later.

[0016] The RAM 80 is, for example, a volatile memory, and is used as a working area for the CPU 70 and temporarily stores various data. The ROM 90 is, for example, a non-volatile memory, and stores a control program. The ROM 90 may store computer programs such as the sound signal generating program 61.

[0017] The sound signal generating program 61 may be provided in a form stored in a computer-readable recording medium and installed in the storage device 60 or the ROM 90. Alternatively, the sound signal generating program 61 may be stored in the external storage device 120. In addition, when the communication I / F 100 is connected to a communication network, the sound signal generating program 61 distributed from a server connected to the communication network may be installed in the storage device 60 or the ROM 90.

[0018] (2) Performance Controls Fig. 2 is a schematic diagram showing the configuration of the performance operator 10. As shown in Fig. 2, the keyboard 11 has a plurality of keys 11a arranged in the left-right direction. In this example, the number of keys 11a on the keyboard 11 is 88, but the embodiment is not limited to this. The number of keys 11a on the keyboard 11 may be more or less than 88. The plurality of keys 11a are assigned pitches that increase in order from left to right.

[0019] Each key 11a has the same function as a key with a damper on an acoustic piano such as a grand piano or an upright piano. Therefore, when none of the keys 11a are pressed, control is performed in the same way as when the damper effect is applied to all the keys 11a. The damper effect means that control is performed to provide the same effect as when a damper comes into contact with the string corresponding to each key on an acoustic piano.

[0020] On the other hand, when the player presses any of the keys 11a, the pressed key 11a is controlled in the same manner as when the damper effect is released. The release of the damper effect means that the control is performed so as to produce the same effect as when the damper is released from the string corresponding to each key on an acoustic piano.

[0021] The pedal 12 is disposed at the feet of the performer. The performer can operate the pedal 12 by stepping on the pedal 12 with his / her foot. The performer can also release the operation of the pedal 12 by removing his / her foot from the pedal 12. In the following description, the position of the pedal 12 when it is not operated is referred to as the "non-operated position," and the position of the pedal 12 when it is fully operated is referred to as the "maximum operation position." In addition, a half pedal region is provided between the non-operated position and the maximum operation position.

[0022] When the performer operates the pedal 12, the damper effect for all the keys 11a is released simultaneously. Specifically, by operating the pedal 12, the damper effect begins to be released at a position where the pedal 12 has moved a predetermined distance from the unoperated position. The position of the pedal 12 at this time is called the separation start position. The separation start position corresponds to the pedal position when the dampers begin to separate from all the strings on an acoustic piano. In this state, when the performer presses any of the keys 11a, sympathetic sounds (string sympathetic sounds) based on all the pitches are generated.

[0023] Furthermore, when the performer releases the operation of the pedal 12, the damper effect is activated. Specifically, the damper effect begins to act at a position where the pedal 12 has moved a predetermined amount forward from the maximum operation position by releasing the operation of the pedal 12. The position of the pedal 12 at this time is called the contact start position. The contact start position corresponds to the pedal position when the damper starts to contact all the strings in an acoustic piano.

[0024] The separation start position and the contact start position are different from each other. The contact start position is approximately equal to the pedal position when separation between all the strings and the dampers ends when the pedal is operated on an acoustic piano (hereinafter referred to as the separation end position). The separation start position is also approximately equal to the pedal position when contact between all the strings and the dampers ends when the pedal operation on an acoustic piano is released (hereinafter referred to as the contact end position). The half pedal area is between the separation start position (contact end position) and the contact start position (separation end position).

[0025] The pedal 12 is provided with position detection units 13, 14, a region detection unit 15, and a speed detection unit 16. Each of the position detection units 13, 14 is, for example, a photoelectric sensor. Each of the position detection units 13, 14 may be a mechanical switch or the like. The position detection unit 13 detects that the pedal 12 is in an unoperated position. The position detection unit 14 detects that the pedal 12 is in a maximum operation position.

[0026] The area detection unit 15 detects that the pedal 12 is in the half pedal area. The area detection unit 15 may be configured with a plurality of photoelectric sensors or mechanical switches. The area detection unit 15 may also detect that the pedal 12 is in a specific position in the half pedal area. In this case, the area detection unit 15 may be a single photoelectric sensor or a single mechanical switch. The specific position in the half pedal area may be, for example, a separation start position, a contact start position, or an intermediate position therebetween.

[0027] The speed detection unit 16 is, for example, an optical Doppler sensor, and detects the speed of the pedal 12 when it passes through the half pedal region. The speed detection unit 16 may detect the speed of the pedal 12 when it passes through a specific position in the half pedal region. The speed detection unit 16 may also be a sensor of another type capable of detecting speed, and may be configured integrally with the region detection unit 15. The detection results by the position detection units 13, 14, the region detection unit 15, and the speed detection unit 16 are used to control the output of sound signals. The above various positions or various speeds may be detected by the CPU 70 or the like based on a signal output by any of the detection units.

[0028] (3) Sound source configuration Fig. 3 is a block diagram showing the configuration of the sound source unit 40. As shown in Fig. 3, the sound source unit 40 includes a key press sound storage unit 41, a key press sound generation unit 42, a resonance sound generation unit 43, a pedal-off sound storage unit 44, a pedal-off sound generation unit 45, a pedal-on sound storage unit 46, and a pedal-on sound generation unit 47. The key press sound generation unit 42, the resonance sound generation unit 43, the pedal-off sound generation unit 45, and the pedal-on sound generation unit 47 may be realized by a CPU (not shown) provided in the sound source unit 40 or the like, or may be realized by the CPU 70 in Fig. 1.

[0029] The key press sound storage unit 41 prestores key press sound waveform data indicating the waveform of the key press sound when each key 11a of the keyboard 11 in Fig. 2 is pressed. Each key press sound waveform data is sampling data indicating a sound waveform, and is obtained by PCM (Pulse Code Modulation) recording the sound generated when each key of an acoustic piano is pressed. In this example, 88 key press sound waveform data corresponding to the 88 strings are stored.

[0030] The key press sound generating unit 42 generates and outputs a key press sound signal S1 from key press sound waveform data corresponding to the pressed key 11a stored in the key press sound storage unit 41. The key press sound signal S1 may be appropriately subjected to a filter process for imparting a change in tone, an envelope control process for adjusting the volume, etc. The resonance sound generating unit 43 generates and outputs a resonance sound signal S2 indicating a resonance sound from the key press sound waveform data stored in the key press sound storage unit 41 based on the detection result by the position detection units 13 and 14 in FIG.

[0031] The pedal-off sound storage unit 44 includes two waveform storage units 44a and 44b. The waveform storage unit 44a and the waveform storage unit 44b store in advance pedal-off sound waveform data indicating waveforms of pedal-off sounds different from each other. The pedal-off sound is a sound generated in an acoustic piano when multiple strings collide with multiple dampers when the pedal operation is released.

[0032] The pedal-off sound waveform data stored in the waveform storage units 44a and 44b have waveforms different from each other. In this example, the volume of the pedal-off sound of the pedal-off sound waveform data stored in the waveform storage unit 44b is greater than the volume of the pedal-off sound of the pedal-off sound waveform data stored in the waveform storage unit 44a. Each pedal-off sound waveform data may be generated by processing or synthesizing the key-pressing sound waveform data so as to represent the vibration sound of the string when muted by the damper. Alternatively, each pedal-off sound waveform data may be generated by recording the physical sound of the string colliding with the damper.

[0033] FIG. 4 is a diagram showing the waveform of a pedal-off sound. Four waveforms W1 to W4 are shown in FIG. 4. In the following description, the moving speed of the pedal 12 when the operation of the pedal 12 is released is called the pedal-off speed. The waveform W1 is a waveform when the pedal-off speed is a first value. The waveform W2 is a waveform when the pedal-off speed is a second value that is greater than the first value. The waveform W3 is a waveform when the pedal-off speed is a third value that is greater than the second value. The waveform W4 is a waveform when the pedal-off speed is a fourth value that is greater than the third value.

[0034] As shown in Figure 4, the greater the pedal-off speed, the greater the amplitude of the waveform of the pedal-off sound (i.e., the volume of the pedal-off sound). In contrast, the slower the pedal-off speed, the greater the volume of the so-called "mya sound." In this respect, the pedal-off sound differs from the "mya sound." The pedal-off sound also differs from the "mya sound" in that the pedal-off sound is generated by contact between the damper and the strings, regardless of the vibration of the strings, whereas the "mya sound" is generated only when the strings are vibrating.

[0035] In this way, the volumes of the pedal-off sounds corresponding to the waveforms W1 to W4 are different from one another. Therefore, for example, pedal-off sound waveform data indicating the waveforms W1 and W4 may be stored in the waveform storage units 44a and 44b in Fig. 3, respectively. Note that the waveform W5 that appears immediately before the waveform W3 and the waveform W6 that appears immediately before the waveform W4 are caused by a sound (hereinafter referred to as a pedal-on sound) that is generated when the strings and the damper separate when the pedal is operated. Therefore, the waveforms W5 and W6 are different from the waveforms indicating the pedal-off sound.

[0036] The pedal-off sound generating unit 45 in Fig. 3 generates and outputs a pedal-off sound signal S3 indicating the pedal-off sound when the operation of the pedal 12 in Fig. 2 is released, from one or both of the pedal-off sound waveform data stored in the waveform storage units 44a, 44b. The generated pedal-off sound signal S3 differs depending on the pedal-off speed of the pedal 12.

[0037] The pedal-on sound storage unit 46 prestores pedal-on sound waveform data indicating a waveform of a pedal-on sound. The pedal-on sound waveform data may be generated by processing or synthesizing key depression sound waveform data, similar to the pedal-off sound waveform data, or may be generated by recording the sound generated when the damper is released from the physical string. Pedal-on sound waveform data indicating the waveform W5 or W6 in FIG. 4 may be stored in the pedal-on sound storage unit 46.

[0038] The pedal-on sound generation unit 47 generates and outputs a pedal-on sound signal S4 from the pedal-on sound waveform data stored in the pedal-on sound memory unit 46 based on the movement speed of the pedal 12 when the pedal 12 is operated (hereinafter referred to as the pedal-on speed).

[0039] The key-depression sound signal S1, the resonance sound signal S2, the pedal-off sound signal S3, and the pedal-on sound signal S4 may be output from a single output channel. On the other hand, when the sound source unit 40 has a plurality of output channels (e.g., MIDI (Musical Instrument Digital Interface) channels), the key-depression sound signal S1, the resonance sound signal S2, the pedal-off sound signal S3, and the pedal-on sound signal S4 may be output from different output channels.

[0040] (4) Functional parts of electronic musical instruments Fig. 5 is a block diagram showing the configuration of the functional units of the electronic musical instrument 1. As shown in Fig. 5, the electronic musical instrument 1 includes, as the functional unit 2, a correspondence information acquisition unit 3, a speed determination unit 4, a sound determination unit 5, a playback unit 6, a recording unit 7, and an announcing unit 8. The functional unit 2 of the electronic musical instrument 1 is realized by the CPU 70 in Fig. 1 executing a sound signal generating program 61 stored in a storage device 60 or the like. At least a part of the functional unit 2 of the electronic musical instrument 1 may be realized by hardware such as an electronic circuit.

[0041] The correspondence information acquisition unit 3 acquires the correspondence information 62 from the storage device 60. The correspondence information 62 indicates the correspondence relationship between the pedal-off speed and the volume of the pedal-off sound. In this example, the correspondence information 62 is table information describing the relationship between the pedal-off speed and the volume of the pedal-off sound, but the embodiment is not limited to this. The correspondence information 62 may be mathematical formula information for converting the pedal-off speed into the volume of the pedal-off sound.

[0042] The speed determination unit 4 determines a pedal-on speed and a pedal-off speed based on the moving speed of the pedal 12 detected by the speed detection unit 16. In this example, each of the pedal-on speed and the pedal-off speed determined by the speed determination unit 4 is the speed when the pedal 12 passes through a half pedal region. The sound determination unit 5 determines the volume of the pedal-off sound based on the correspondence information 62 acquired by the correspondence information acquisition unit 3 and the pedal-off speed determined by the speed determination unit 4.

[0043] The reproducing unit 6 reproduces various sounds by controlling the operation of the sound source unit 40. Specifically, in response to pressing of any key 11a of the keyboard 11, the reproducing unit 6 controls the operation of a key pressing sound generating unit 42 (FIG. 3) of the sound source unit 40 so as to output a key pressing sound signal S1. In addition, the reproducing unit 6 controls the operation of a resonance sound generating unit 43 (FIG. 3) of the sound source unit 40 so as to output a resonance sound signal S2 based on the position of the pedal 12 detected by the position detecting units 13 and 14.

[0044] Furthermore, the playback unit 6 controls the operation of the pedal-off sound generation unit 45 (FIG. 3) of the sound source unit 40 so as to output a pedal-off sound signal S3 indicating a pedal-off sound at the volume determined by the sound determination unit 5 at the timing when the region detection unit 15 detects that the pedal 12 is in the half pedal region. This causes the pedal-off sound to be played at the volume determined by the sound determination unit 5. In this example, the operation of the pedal-off sound generation unit 45 is controlled so that the pedal-off sound is played when it is detected that the pedal 12 is at the end (contact end position) of the half pedal region at the time of release of operation.

[0045] Furthermore, when the pedal-on speed determined by the speed determination unit 4 is equal to or greater than a predetermined speed threshold, the reproduction unit 6 controls the operation of the pedal-on sound generation unit 47 (FIG. 3) of the sound source unit 40 so as to output a pedal-on sound signal S4 at the timing when the area detection unit 15 detects that the pedal 12 is in the half pedal area. On the other hand, when the pedal-on speed is less than the speed threshold, the reproduction unit 6 controls the operation of the pedal-on sound generation unit 47 so as not to output the pedal-on sound signal S4. In this way, a pedal-on sound is reproduced based on the pedal-on speed. In this example, the operation of the pedal-on sound generation unit 47 is controlled so that the pedal-on sound is reproduced when it is detected that the pedal 12 is at the end (separation end position) of the half pedal area during operation.

[0046] When the playback unit 6 plays back a pedal-off sound with a volume equal to or greater than a predetermined volume threshold, or when the playback unit 6 plays back a pedal-on sound, the recording unit 7 records the history in the storage device 60 or the like. The history may be recorded in another storage medium such as the external storage device 120 in FIG. 1. In this case, the performer can recognize after the fact that a pedal-off sound has been played back by referring to the recorded playback history. This can encourage the performer to improve his or her playing technique.

[0047] When the playback unit 6 plays back a pedal-off sound at a volume equal to or greater than the volume threshold, or when the playback unit 6 plays back a pedal-on sound, the notification unit 8 notifies the performer of this. In this example, the notification unit 8 performs the notification by causing the display 30 to display a character string indicating that a pedal-off sound at a volume equal to or greater than the volume threshold has been played back or that a pedal-on sound has been played back, but the method of notification is not limited to this. For example, if the electronic musical instrument 1 includes an indicator light such as a lamp, the notification unit 8 may perform the notification by turning on, off, or blinking the indicator light in a manner corresponding to the content of the notification.

[0048] (5) Sound signal generation processing The sound signal generation process includes a performance sound signal generation process and an additional sound signal generation process. The performance sound signal generation process and the additional sound signal generation process are executed in parallel. Each of the performance sound signal generation process and the additional sound signal generation process will be described below with reference to the electronic musical instrument 1 in Fig. 5. In the initial state, all the keys 11a of the keyboard 11 are in a released state, and the pedals 12 are in an unoperated state.

[0049] FIG. 6 is a flow chart showing an example of a performance sound signal generation process executed by the electronic musical instrument 1. First, the reproducing unit 6 judges whether or not any of the keys 11a of the keyboard 11 has been pressed (step S11). If none of the keys 11a have been pressed, the reproducing unit 6 waits until any of the keys 11a are pressed. If any of the keys 11a have been pressed, the reproducing unit 6 judges whether or not the pedal 12 has been operated based on the detection results by the position detecting units 13 and 14 (step S12). If the pedal 12 has been operated, it is judged whether or not to output a pedal-on sound signal S4, regardless of whether any of the keys 11a have been pressed. Details will be described later in steps S22 to S24 of the additional sound signal generation process in FIG. 7.

[0050] If the pedal 12 is operated, the reproducing unit 6 controls the key press sound generating unit 42 and the resonance sound generating unit 43 of the sound source unit 40 to output the key press sound signal S1 and the resonance sound signal S2, respectively (step S13). Then, the process returns to step S11. If the pedal 12 is not operated in step S12, the reproducing unit 6 controls the key press sound generating unit 42 of the sound source unit 40 to output the key press sound signal S1 (step S14). Then, the process returns to step S11.

[0051] 7 and 8 are flow charts showing an example of the additional sound signal generating process executed by the electronic musical instrument 1. First, the correspondence information acquiring unit 3 acquires the correspondence information 62 from the storage device 60 or the like (step S21). Next, the speed determining unit 4 judges whether or not the pedal 12 has been operated based on the detection results by the position detecting units 13 and 14 (step S22). Step S22 is executed regardless of whether or not any of the keys 11a has been pressed, and when any of the keys 11a has been pressed, step S22 is executed simultaneously with step S12 of the performance sound signal generating process of FIG. 6. When the pedal 12 has not been operated, the speed determining unit 4 waits until the pedal 12 is operated.

[0052] When the pedal 12 is operated, the speed determination unit 4 determines a pedal-on speed based on the detection result by the speed detection unit 16 (step S23). Next, the speed determination unit 4 judges whether the pedal-on speed determined in step S23 is equal to or greater than a speed threshold value (step S24). When the pedal-on speed is less than the speed threshold value, the process proceeds to step S28.

[0053] If the pedal-on speed is equal to or greater than the speed threshold value, the playback unit 6 controls the pedal-on sound generating unit 47 of the sound source unit 40 to output a pedal-on sound signal S4 (step S25). Step S25 may be executed when the area detection unit 15 detects that the pedal 12 is in the half pedal area, particularly when it detects that the pedal 12 is in the release start position.

[0054] The recording unit 7 also records a history indicating that the pedal-on sound has been reproduced in the storage device 60 or the like (step S26). Furthermore, the notification unit 8 notifies the performer that the pedal-on sound has been reproduced (step S27). Steps S25 to S27 may be executed either first or simultaneously. Thereafter, the process proceeds to step S28.

[0055] In step S28, the speed determination unit 4 determines whether or not the operation of the pedal 12 has been released based on the detection results by the position detection units 13 and 14 (step S28). If the operation of the pedal 12 has not been released, the speed determination unit 4 waits until the operation of the pedal 12 is released.

[0056] When the operation of the pedal 12 is released, the speed determination unit 4 determines the pedal-off speed based on the detection result by the speed detection unit 16 (step S29). Next, the sound determination unit 5 determines the volume of the pedal-off sound based on the correspondence information 62 acquired in step S21 and the pedal-off speed determined in step S29 (step S30).

[0057] Thereafter, the reproduction unit 6 outputs a pedal-off sound signal S3 by controlling the pedal-off sound generating unit 45 of the sound source unit 40 (step S31). In step S31, the pedal-off sound signal S3 is output so that the pedal-off sound with the volume determined in step S30 is reproduced. Step S31 may be executed at the timing when the area detection unit 15 detects that the pedal 12 is in the half pedal area, particularly at the timing when it is detected that the pedal 12 is in the contact start position.

[0058] Next, the sound determination unit 5 determines whether or not the volume of the pedal-off sound determined in step S30 is equal to or greater than the volume threshold value (step S32). If the volume of the pedal-off sound is less than the volume threshold value, the process returns to step S22.

[0059] If the volume of the pedal-off sound is equal to or greater than the volume threshold, the recording unit 7 records in the storage device 60 or the like a history indicating that a pedal-off sound equal to or greater than the volume threshold has been reproduced (step S33). The notification unit 8 notifies the performer that a pedal-off sound equal to or greater than the volume threshold has been reproduced (step S34). Steps S33 and S34 may be executed either first or simultaneously. Thereafter, the process returns to step S22.

[0060] (6) Effects As described above, the electronic musical instrument 1 in this embodiment includes the pedal 12, the speed detection unit 16 that detects the moving speed of the pedal 12, the speed determination unit 4 that determines the pedal-off speed when the operation of the pedal 12 is released based on the moving speed detected by the speed detection unit 16, and the playback unit 6 that plays a pedal-off sound based on the pedal-off speed determined by the speed determination unit 4.

[0061] According to this configuration, a pedal-off sound that occurs when the pedal operation of an acoustic instrument is released is simulated. This imparts the harshness of the sound generated in an acoustic instrument to the sound generated by the electronic instrument 1. As a result, the behavior of the electronic instrument 1 can be made to be closer to that of an acoustic instrument. Note that the pedal-off sound is a sound that is not desirable to generate in normal performance. Therefore, by practicing in such a way that the pedal-off sound is not generated in the electronic instrument, the performer can practice pedal operation when playing an acoustic instrument.

[0062] The electronic musical instrument 1 may further include an area detection section 15 that detects that the pedal 12 is in a specific area. The playback section 6 may play a pedal-off sound at the timing when the area detection section 15 detects that the pedal 12 is in the specific area. In this case, the pedal-off sound is simulated at a predetermined timing when the operation of the pedal 12 is released. This makes it possible to make the behavior of the electronic musical instrument 1 closer to that of an acoustic musical instrument.

[0063] The specific region may be between the position of the pedal 12 when not operated and the position of the pedal 12 when fully operated. In this case, the pedal-off sound is simulated at the timing when a pedal-off sound is generated when the pedal operation is released in an acoustic instrument. This allows the behavior of the electronic musical instrument 1 to be closer to that of an acoustic musical instrument. In particular, when the specific region is the contact start position, the behavior of the electronic musical instrument 1 can be made even closer to that of an acoustic musical instrument.

[0064] The pedal-off speed determined by the speed determination unit 4 may be the speed at which the pedal 12 passes through a specific area. In this case, the pedal-off sound of an acoustic instrument can be simulated with higher fidelity. In particular, when the pedal-off speed is the speed at which the pedal 12 passes through the contact start position, the pedal-off sound of an acoustic instrument can be simulated with even higher fidelity.

[0065] The electronic musical instrument 1 may further include a sound determination unit 5 that determines the volume of a pedal-off sound based on the pedal-off speed determined by the speed determination unit 4. Furthermore, the reproduction unit 6 may reproduce the pedal-off sound at the volume determined by the sound determination unit 5. In this case, the pedal-off sound of an acoustic musical instrument can be simulated with higher fidelity.

[0066] The electronic musical instrument 1 may further include a correspondence information acquisition unit 3 that acquires correspondence information 62 indicating the correspondence relationship between the pedal-off speed and the volume of the pedal-off sound. The sound determination unit 5 may determine the volume of the pedal-off sound based on the correspondence information 62 acquired by the correspondence information acquisition unit 3. In this case, the volume of the pedal-off sound can be easily determined based on the pedal-off speed.

[0067] The speed determination unit 4 may further determine a pedal-on speed when the pedal 12 is operated, based on the moving speed detected by the speed detection unit 16. The reproduction unit 6 may further reproduce a pedal-on sound based on the pedal-on speed determined by the speed determination unit 4. In this case, the pedal-on sound when the pedal 12 is operated in an acoustic instrument is further simulated. This makes it possible to make the behavior of the electronic musical instrument 1 closer to that of an acoustic musical instrument.

[0068] The pedal-on sound may be reproduced when the region detection unit 15 detects that the pedal 12 is in the half-pedal region. In this case, the behavior of the electronic musical instrument 1 can be made to be closer to that of an acoustic musical instrument. In particular, when a specific region is the separation start position, the behavior of the electronic musical instrument 1 can be made to be even closer to that of an acoustic musical instrument.

[0069] The pedal-on speed may be the speed at which the pedal 12 passes through the half-pedal region. In this case, the pedal-on sound of an acoustic instrument can be simulated with higher fidelity. In particular, when the pedal-on speed is the speed at which the pedal 12 passes through the release start position, the pedal-on sound of an acoustic instrument can be simulated with even higher fidelity.

[0070] The electronic musical instrument 1 may be a keyboard instrument, and the pedal 12 may be a pedal for a keyboard instrument. In this case, the behavior of the electronic musical instrument 1 can be made to be closer to that of a keyboard instrument.

[0071] The electronic musical instrument 1 may further include a recording unit 7 that records the playback history of an additional sound when an additional sound, such as a pedal-off sound, different from the played sound is played. In this case, the performer can recognize after the fact that the additional sound has been played by referring to the recorded playback history. This can encourage the performer to improve his / her playing technique.

[0072] The electronic musical instrument 1 may further include a notification unit 8 that notifies the player that an additional sound, such as a pedal-off sound, different from the performance sound has been reproduced. In this case, the player can recognize in real time that the additional sound has been reproduced by being notified, which can encourage the player to improve his / her performance technique.

[0073] (7) Other embodiments (a) In the above embodiment, the sound determination unit 5 determines the volume of the pedal-off sound based on the pedal-off speed determined by the speed determination unit 4, and the playback unit 6 plays the pedal-off sound at the volume determined by the sound determination unit 5, but the embodiment is not limited to this. The sound determination unit 5 may determine the sound quality of the pedal-off sound based on the pedal-off speed determined by the speed determination unit 4, and the playback unit 6 may play the pedal-off sound with the sound quality determined by the sound determination unit 5.

[0074] In this configuration, the waveform storage section 44a and the waveform storage section 44b of the pedal-off sound storage section 44 store in advance pedal-off sound waveform data indicating waveforms of pedal-off sounds with different sound qualities. Furthermore, the correspondence information 62 may indicate a correspondence relationship between the pedal-off speed and the sound quality of the pedal-off sound. In this case, the sound determination section 5 can easily determine the sound quality of the pedal-off sound based on the correspondence information 62 acquired by the correspondence information acquisition section 3.

[0075] (b) In the above embodiment, the pedal-off sound storage unit 44 includes two waveform storage units 44a, 44b, but the embodiment is not limited to this. The pedal-off sound storage unit 44 may include three or more waveform storage units each storing different pedal-off sound waveform data in advance. Furthermore, the pedal-off sound generation unit 45 may select pedal-off sound waveform data corresponding to the pedal-off speed from the pedal-off sound waveform data stored in the multiple waveform storage units, and output the selected pedal-off sound waveform data as the pedal-off sound signal S3.

[0076] (c) In the above embodiment, the pedal-off sound is reproduced in accordance with the pedal-off speed, but the embodiment is not limited to this. Like the pedal-on sound, the pedal-off sound may be reproduced when the pedal-off speed is equal to or greater than a predetermined speed threshold, and may not be reproduced when the pedal-off speed is less than the speed threshold. That is, the reproduction unit 6 may reproduce the pedal-off sound based on the pedal-off speed determined by the speed determination unit 4. In this case, the electronic musical instrument 1 may not include the correspondence information acquisition unit 3 and the sound determination unit 5. Also, the pedal-off sound storage unit 44 may include only one waveform storage unit, not multiple waveform storage units.

[0077] (d) In the above embodiment, the pedal-on sound is reproduced when the pedal-on speed is equal to or greater than a speed threshold, and is not reproduced when the pedal-on speed is less than the threshold, but the embodiment is not limited to this. As with the pedal-off sound, the pedal-on sound may be reproduced in accordance with the pedal-on speed.

[0078] In this configuration, the pedal-on sound storage unit 46 pre-stores pedal-on sound waveform data indicating waveforms of a plurality of pedal-on sounds that are different from one another. Furthermore, the correspondence information 62 may indicate a correspondence relationship between the pedal-on speed and the pedal-on sound. In this case, the sound determination unit 5 can determine the pedal-on sound based on the correspondence information 62 acquired by the correspondence information acquisition unit 3. This allows the playback unit 6 to play back the pedal-on sound determined by the sound determination unit 5 so as to correspond to the pedal-on speed.

[0079] (e) In the above embodiment, the speed determination unit 4 determines the pedal-on speed and the playback unit 6 plays the pedal-on sound, but the embodiment is not limited to this. The speed determination unit 4 does not have to determine the pedal-on speed, and the playback unit 6 does not have to play the pedal-on sound. In this case, the sound source unit 40 does not include the pedal-on sound storage unit 46 and the pedal-on sound generation unit 47.

[0080] (f) In the above embodiment, the electronic musical instrument 1 includes the recording unit 7 and the notification unit 8, but the embodiment is not limited to this. The electronic musical instrument 1 does not have to include either or both of the recording unit 7 and the notification unit 8.

[0081] (g) In the above embodiment, the pedal 12 is a damper pedal, but the embodiment is not limited to this. The pedal 12 may be a pedal for other keyboard instruments. For example, in an acoustic instrument, when a shift pedal is operated or released, the shelf board on which the keyboard and action are provided moves left and right, which may generate a collision sound with the side board. Therefore, the pedal 12 may be a shift pedal.

[0082] (h) In the above embodiment, a PCM sound source that generates and outputs a sound signal based on waveform data is used, but the embodiment is not limited to this. Instead of the PCM sound source, a physical model sound source that calculates and outputs a sound signal based on a physical model may be used.

[0083] (8) Reference form In the above embodiment, the electronic musical instrument 1 includes the playback unit 6 that plays back an additional sound such as a pedal-off sound or a pedal-on sound based on the pedal-off speed or pedal-on speed determined by the speed determination unit 4, but the embodiment is not limited to this. If the electronic musical instrument 1 includes the recording unit 7 or the notification unit 8, it does not have to include the playback unit 6.

[0084] Even in this configuration, the recording unit 7 can record the generation history of the additional sounds when the pedal-off speed determined by the speed determination unit 4 is equal to or higher than a predetermined speed threshold, or when the pedal-on speed is equal to or higher than a predetermined speed threshold. Therefore, the performer can recognize after the fact that an additional sound will be generated by referring to the recorded generation history. This can encourage the performer to improve his / her playing technique.

[0085] Similarly, the notification unit 8 can notify the performer that an additional sound will be generated when the pedal-off speed determined by the speed determination unit 4 is equal to or greater than a predetermined speed threshold, or when the pedal-on speed is equal to or greater than a predetermined speed threshold, etc. Therefore, the performer can recognize in real time that an additional sound will be generated by being notified, which can encourage the performer to improve his / her playing technique.

[0086] (9) Summary of the embodiment (1) The electronic musical instrument referred to in paragraph 1 is Pedals and a speed detection unit that detects a moving speed of the pedal; a speed determination unit that determines a pedal-off speed when the operation of the pedal is released, based on the moving speed detected by the speed detection unit; and a playback unit that plays a pedal-off sound based on the pedal-off speed determined by the speed determination unit.

[0087] This electronic musical instrument simulates the pedal-off sound that occurs when the pedal operation of an acoustic musical instrument is released. This imparts the harshness of sounds generated in an acoustic musical instrument to sounds generated by the electronic musical instrument. As a result, the behavior of the electronic musical instrument can be made to be closer to that of an acoustic musical instrument.

[0088] (2) The electronic musical instrument described in paragraph 1 is a region detection unit that detects whether the pedal is in a specific region; The playback section may play a pedal-off sound at a timing when the area detection section detects that the pedal is in the specific area.

[0089] In this case, a pedal-off sound is simulated at a predetermined timing when the pedal operation is released, thereby making the behavior of the electronic musical instrument closer to that of an acoustic musical instrument.

[0090] (3) In the electronic musical instrument described in (2), The specific region may be between a position when the pedal is not operated and a position when the pedal is fully operated.

[0091] In this case, the pedal-off sound is simulated at the same timing as when the pedal is released in an acoustic instrument, thereby making the behavior of the electronic musical instrument even closer to that of an acoustic musical instrument.

[0092] (4) In the electronic musical instrument described in paragraph 2 or 3, The pedal-off speed determined by the speed determination unit may be a speed at which the pedal passes through the specific region.

[0093] In this case, the pedal-off sound of an acoustic instrument can be simulated with higher fidelity.

[0094] (5) The electronic musical instrument according to any one of the first to fourth aspects, a sound determination unit that determines a volume or a quality of a pedal-off sound based on the pedal-off speed determined by the speed determination unit, The reproduction unit may reproduce a pedal-off sound at a volume or sound quality determined by the sound determination unit.

[0095] In this case, the pedal-off sound of an acoustic instrument can be simulated with higher fidelity.

[0096] (6) The electronic musical instrument described in paragraph 5 is a correspondence information acquisition unit that acquires correspondence information indicating a correspondence relationship between a pedal-off speed and a volume or a sound quality of a pedal-off sound, The sound determination unit may determine a volume or a sound quality of a pedal-off sound based on the corresponding information acquired by the corresponding information acquisition unit.

[0097] In this case, the volume or quality of the pedal-off sound can be easily determined based on the pedal-off speed.

[0098] (Item 7) In the electronic musical instrument according to any one of items 1 to 6, The speed determination unit further determines a pedal-on speed when the pedal is operated, based on the moving speed detected by the speed detection unit; The reproduction unit may further reproduce a pedal-on sound based on the pedal-on speed determined by the speed determination unit.

[0099] In this case, the pedal-on sound that occurs when the pedal is operated on an acoustic instrument is also simulated, thereby making the behavior of the electronic musical instrument closer to that of an acoustic musical instrument.

[0100] (Item 8) In the electronic musical instrument according to any one of items 1 to 7, the electronic musical instrument is a keyboard instrument, The pedal may be a pedal for a keyboard instrument.

[0101] In this case, the behavior of the electronic musical instrument can be made closer to that of a keyboard instrument. [Explanation of symbols]

[0102] 1...electronic musical instrument, 2...functional section, 3...corresponding information acquisition section, 4...speed determination section, 5...sound determination section, 6...playback section, 7...recording section, 8...notification section, 10...performance operator, 11...keyboard, 11a...key, 12...pedal, 13, 14...position detection section, 15...area detection section, 16...speed detection section, 20...setting operation section, 30...display, 40...sound source section, 41...key-press sound storage section, 42...key-press sound generation section, 43...resonance sound generation section, 44...pedal-off sound storage section, 44a, 44b ...waveform storage unit, 45...pedal-off sound generation unit, 46...pedal-on sound storage unit, 47...pedal-on sound generation unit, 50...sound system, 60...storage device, 61...sound signal generation program, 62...corresponding information, 70...CPU, 80...RAM, 90...ROM, 100...communication I / F, 110...bus, 120...external storage device, S1...key press sound signal, S2...resonance sound signal, S3...pedal-off sound signal, S4...pedal-on sound signal, W1 to W6...waveform

Claims

1. Pedals and a speed detection unit that detects a moving speed of the pedal; a speed determination unit that determines a pedal-off speed when the operation of the pedal is released, based on the moving speed detected by the speed detection unit; a playback unit that plays a pedal-off sound based on the pedal-off speed determined by the speed determination unit.

2. a region detection unit that detects whether the pedal is in a specific region; 2. The electronic musical instrument according to claim 1, wherein said playback section plays a pedal-off sound at the timing when said area detection section detects that said pedal is in said specific area.

3. 3. The electronic musical instrument according to claim 2, wherein the specific region is between a position when the pedal is not operated and a position when the pedal is fully operated.

4. 4. The electronic musical instrument according to claim 2, wherein the pedal-off speed determined by said speed determination section is the speed at which said pedal passes through said specific region.

5. a sound determination unit that determines a volume or a quality of a pedal-off sound based on the pedal-off speed determined by the speed determination unit, 4. The electronic musical instrument according to claim 1, wherein the playback section plays back the pedal-off sound at a volume or sound quality determined by the sound determination section.

6. a correspondence information acquisition unit that acquires correspondence information indicating a correspondence relationship between a pedal-off speed and a volume or a sound quality of a pedal-off sound, 6. The electronic musical instrument according to claim 5, wherein the sound determination section determines a volume or a quality of the pedal-off sound based on the correspondence information acquired by the correspondence information acquisition section.

7. The speed determination unit further determines a pedal-on speed when the pedal is operated, based on the moving speed detected by the speed detection unit; 4. The electronic musical instrument according to claim 1, wherein the playback section further plays a pedal-on sound based on the pedal-on speed determined by the speed determination section.

8. the electronic musical instrument is a keyboard instrument, 4. The electronic musical instrument according to claim 1, wherein the pedal is a pedal for a keyboard instrument.

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