A directional sound pickup system

Abstract

The present invention relates to a directional sound pickup system, wherein a sound pickup device calling module comprises: a track; a bearing device for carrying a sound pickup device, which can be connected to the track and move along the track; a control module connected to the bearing device, and the control module can drive the bearing device and the sound pickup device carried by the bearing device to move to a designated sound pickup position on the track according to a designated sound pickup task; a sound pickup device adjustment module comprises: a monitoring module; a driving module; a sound pickup controller connected to the monitoring module and the driving module, and when the designated sound pickup device is at the designated sound pickup position, the sound pickup controller controls the driving module to move and adjust the distance between the sound pickup head and the mouth of the sound emitter, and at the same time adjusts the angle of the sound pickup head so that the sound pickup head is located in a preset fixed area of ​​the mouth of the sound emitter so as to accurately capture the sound emitted by the sound emitter and the predetermined area around the mouth of the sound emitter. The sound pickup device calling management efficiency is improved, manpower is saved, and the sound pickup effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sound pickup, and in particular to a directional sound pickup system. Background Art

[0002] A sound pickup device is a device used to collect sound and then transmit it to the back-end equipment. It is often used in teaching, conferences or recording studios.

[0003] Generally, in remote teaching or conference scenarios, students or non-speakers are usually not the main speakers. There are many of them and they are widely distributed. In order to ensure that any student or non-speaker can clearly capture the speaker's voice when speaking, multiple pickup devices are set up at different locations on the shooting site. When a student or non-speaker speaks, the pickup device closest to the student or non-speaker is manually taken to the student or non-speaker for use. At present, this method requires multiple managers to manage and transfer the pickup devices, so it consumes manpower and is inefficient. In addition, when the student or non-speaker turns his body, the pickup device cannot adaptively adjust the angle with the rotation of the human body, which easily leads to poor pickup effect and fluctuations in the pickup. Further improvements are needed for this. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a directional sound pickup system for improving the efficiency of sound pickup device call management and sound pickup effect in view of the above-mentioned prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a directional sound pickup system, including a sound pickup device having a sound pickup head, characterized in that: it also includes a sound pickup device calling module and a sound pickup device adjusting module;

[0006] The sound pickup device calling module includes:

[0007] track;

[0008] A carrying device, used for carrying the sound pickup device, capable of being connected to the track and moving along the track;

[0009] A control module is connected to the carrying device, and the control module can drive the carrying device and the sound pickup device carried by the carrying device to move to a designated sound pickup position on the track according to a designated sound pickup task;

[0010] The sound pickup device adjustment module comprises:

[0011] A monitoring module, provided on the sound pickup device, for monitoring the mouth position of the speaker;

[0012] A driving module, used for driving a pickup head of a sound pickup device to change an angle and change a distance between the pickup head of the sound pickup device and a mouth of a speaker;

[0013] The sound pickup controller is connected to the monitoring module and the driving module. When the designated sound pickup device is at the designated sound pickup position on the track, the sound pickup controller can control the action of the driving module to adjust the distance between the sound pickup head and the mouth of the sound emitter according to the monitoring result of the monitoring module, and at the same time adjust the angle of the sound pickup head so that the sound pickup head is located in a preset fixed area of ​​the sound emitter's mouth periodically to accurately capture the sound emitted by the sound emitter and the predetermined area around the sound emitter's mouth.

[0014] In order to improve the management rate of the sound pickup device, there is at least one sound pickup device, and each sound pickup device is correspondingly arranged on a carrying device.

[0015] In order to realize the management of the sound pickup device, the track includes a placement area track and a sound pickup track connected to the placement area track, and the designated sound pickup position is set on the sound pickup track;

[0016] When the control module has not received a designated sound pickup task, the carrying device and the sound pickup equipment it carries are on the placement area track; after the control module receives a designated sound pickup task, the carrying device and the sound pickup equipment it carries are controlled to move from the placement area track to a designated sound pickup position on the sound pickup track; and after the designated sound pickup task is completed, the carrying device and the sound pickup equipment it carries are controlled to move from the designated sound pickup position on the sound pickup track back to the placement area track.

[0017] In order to call the sound pickup equipment, the placement area track is provided with at least one entrance and exit connected to the sound pickup track. Each carrying device can be connected to the placement area track and move along the placement area track. It can also move out of the placement area track from one of the entrances and exits of the placement area track and move to the sound pickup track to perform the sound pickup task under the control of the control module. It can also move from the sound pickup track to one of the entrances and exits of the placement area track and enter the placement area track under the control of the control module.

[0018] Preferably, the placement area track is one, the entrances and exits are distributed at intervals on the placement area track, and each entrance and exit and the pickup track is also provided with a branch track.

[0019] In this solution, the control module stores in advance the information of the location of each carrying device and the sound pickup device it carries.

[0020] In this solution, the method for obtaining the designated sound pickup task is: through the electrical signal detection module, sound detection module or motion detection module connected to the control module, once the control module receives the trigger signal of the electrical signal detection module, the sound detection module or the motion detection module, the control module receives the designated sound pickup task.

[0021] Furthermore, the method for obtaining the designated sound pickup position corresponding to the designated sound pickup task is as follows: a designated sound pickup position corresponding to each different designated sound pickup task is pre-set in the control module, and once the control module receives the designated sound pickup task, the designated sound pickup position corresponding to the designated sound pickup task can be obtained.

[0022] Compared with the prior art, the advantages of the present invention are: the control module can drive the designated carrying device and the sound pickup device carried by it to move to the designated sound pickup position on the track according to the designated sound pickup task, and when the designated sound pickup device is in the designated sound pickup position on the track, the sound pickup device adjustment module acts according to the monitoring result to make the sound pickup head located in the preset fixed area of ​​the mouth of the speaker so as to accurately capture the sound emitted by the speaker and the predetermined area around the mouth of the speaker. Therefore, the present invention manages the sound pickup device in a unified manner through the sound pickup device calling module, without human intervention, and can automatically execute the sound pickup device calling requirements, thereby improving the efficiency of the sound pickup device calling management, saving manpower, and improving the sound pickup effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a sound pickup device calling module in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings.

[0025] The directional sound pickup module in this embodiment includes a sound pickup device having a sound pickup head, a sound pickup device calling module and a sound pickup device adjusting module.

[0026] The sound pickup device calling module is used to call and manage the sound pickup device, and the sound pickup device calling module includes a track, a carrying device 3 and a control module; the carrying device 3 is used to carry the sound pickup device, can be connected to the track and move along the track; the control module is connected to the carrying device 3, and the control module can drive the carrying device 3 and the sound pickup device it carries to move to the designated sound pickup position on the track according to the designated sound pickup task; the above-mentioned control module is an MCU.

[0027] In this embodiment, the method for obtaining the designated sound pickup task is: through the electric signal detection module, sound detection module or action detection module connected to the control module, once the control module receives the trigger signal of the electric signal detection module, sound detection module or action detection module, the control module receives the designated sound pickup task at this time; the electric signal detection module can be a button, and once the button is triggered, the control module can detect it; in addition, the method for obtaining the designated sound pickup position corresponding to the designated sound pickup task is: the control module is pre-set with a designated sound pickup position corresponding to each different designated sound pickup task, and once the control module receives the designated sound pickup task, the designated sound pickup position corresponding to the designated sound pickup task can be obtained. Of course, in order to facilitate the control module to control the corresponding sound pickup device to work according to different designated sound pickup tasks, the control module stores the information of the position of each carrying device and the sound pickup device it carries in advance.

[0028] In this embodiment, the track includes a placement area track 1 and a sound pickup track 2 connected to the placement area track 1, and a designated sound pickup position 21 is set on the sound pickup track 2; when the control module has not received the designated sound pickup task, the carrier device 3 and the sound pickup device it carries are on the placement area track 1; after the control module receives the designated sound pickup task, the carrier device 3 and the sound pickup device it carries are controlled to move from the placement area track 1 to the designated sound pickup position 21 on the sound pickup track 2; and after the designated sound pickup task is completed, the carrier device 3 and the sound pickup device it carries are controlled to move from the designated sound pickup position 21 on the sound pickup track 2 back to the placement area track 1. In this way, the sound pickup devices are uniformly managed through the placement area track 1. When the sound pickup devices need to be called, the sound pickup devices in the placement area track are called out for operation, which is easy to manage and does not require human intervention. The above-mentioned sound pickup track 2 is a closed-loop track, the most common of which is square or circular or field-shaped or honeycomb-shaped, such as Figure 1 As shown, the pickup track 2 is square, and a plurality of designated pickup points 21 are arranged on the pickup track 2 .

[0029] In addition, the placement area track 1 is provided with at least one entrance and exit 11 connected to the pickup track 2. Each carrying device can be connected to the placement area track 1 and move along the placement area track 1. It can also move out of the placement area track 1 from one of the entrances and exits 11 of the placement area track 1 and move to the pickup track 2 to perform the pickup task under the control of the control module. It can also move from the pickup track 2 to one of the entrances and exits 11 of the placement area track 1 and enter the placement area track 1 under the control of the control module.

[0030] The structure of the placement area track can also adopt the first method: Figure 1As shown, the placement area track 1 is one, and the entrances and exits 11 are spaced apart on the placement area track 1, and each entrance and exit 11 is connected to the sound pickup track 2 via a branch track 12. The sound pickup device call management system also includes a temporary track 13 connected to each entrance and exit 11, and the temporary track 13 is set away from the branch track 12. In this embodiment, the branch track 12 and the temporary track 13 are both perpendicular to the placement area track 1 and are respectively located on both sides of the placement area track 1.

[0031] The structure of the placement area track can also adopt the second mode: the placement area track 1 can also be at least one, each placement area track is arranged side by side and spaced apart, each placement area track has a first entrance and a second entrance, the first entrance of each placement area track is connected, and the second entrance of each waiting area main track is connected. The pickup device call management system also includes a temporary track arranged side by side and spaced apart with the placement area track.

[0032] The specific shapes of the placement area track and the pickup track can also be adaptively modified according to actual needs.

[0033] There is at least one sound pickup device, and each sound pickup device is correspondingly arranged on a carrier device. Each carrier device includes a driving source and a transmission component. The driving source is connected to the base through the transmission component. The driving source is usually a motor, and the transmission component can be a gear drive or a belt drive. When the carrier device 2 carries a sound pickup device, it is connected to the placement area track. By default, there is no situation where the carrier device 2 is unloaded.

[0034] When there is only one sound pickup device, the sound pickup device calling method in this case is the simplest. After the control module specifies the sound pickup task, the control module controls the only sound pickup device to move from the placement area track to the sound pickup track to perform the sound pickup task. The moving process can first calculate the shortest path between the current position of the sound pickup device and the specified sound pickup position on the sound pickup track, and control the sound pickup device to move along the shortest path through the control module; of course, the entrance and exit closest to the sound pickup device on the placement area track can also be selected first, and the control module can control the sound pickup device to move out from the nearest entrance and exit; or other control paths;

[0035] When there are N sound pickup devices, N is a natural number greater than 1, and the N sound pickup devices can be sound pickup devices of different models, functions, etc. Before the sound pickup device is called, first, the control module obtains the position of the carrier carrying the specified sound pickup device according to the sound pickup device calling requirement, and then obtains two entrances and exits adjacent to the carrier carrying the specified sound pickup device, and determines whether there are other carriers connected between each entrance and exit and the carrier carrying the specified sound pickup device. If so, the entrance and exit on the side with the least carriers is selected as the set entrance and exit, and the carrier connected between the carrier carrying the specified device and the set entrance and exit are first moved out from the set entrance and exit to the temporary track in sequence, and after all the carriers connected between the carrier carrying the specified device and the set entrance and exit are moved out, the carrier carrying the specified device is moved out from the set entrance and exit, and after the carrier carrying the specified device is moved out, the carrier moved out to the temporary track is moved back to the placement area track, if not, the control module controls the carrier carrying the specified sound pickup device to move out from any entrance and exit.

[0036] The above-mentioned sound pickup device adjustment module includes a monitoring module, a driving module and a sound pickup controller. The monitoring module is arranged on the sound pickup device and is used to monitor the mouth position of the sound emitter; the driving module is used to drive the sound pickup head of the sound pickup device to change the angle and change the distance between the sound pickup head of the sound pickup device and the mouth of the sound emitter; the sound pickup controller is connected to the monitoring module and the driving module. When the designated sound pickup device is in the designated sound pickup position state on the track, the sound pickup controller can control the action of the driving module according to the monitoring result of the monitoring module to adjust the distance between the sound pickup head and the mouth of the sound emitter, and adjust the angle of the sound pickup head at the same time, so that the sound pickup head is located in the preset fixed area of ​​the mouth of the sound emitter so as to accurately capture the sound emitted by the sound emitter and the predetermined area around the mouth of the sound emitter.

[0037] The above-mentioned driving module includes a driving mechanism for driving the pickup head to rotate and a telescopic mechanism for controlling the extension and retraction of the pickup head. The driving mechanism for driving the pickup head to rotate also adopts conventional technology. The above-mentioned telescopic mechanism includes a telescopic rod and a telescopic control component for controlling the extension and retraction of the telescopic rod. The pickup head is arranged on the upper surface of the telescopic rod. The telescopic mechanism adopts the existing technology and will not be elaborated here. In addition, the monitoring module is a face recognition camera, especially for identifying the mouth of the speaker. This technology is the existing technology and will not be elaborated here.

[0038] The above directional sound pickup system is used in classrooms. The monitoring module monitors the position of the speaker in real time. When the speaker is detected to be reading a manuscript with his head down, the telescopic mechanism automatically adjusts the telescopic length, and the sound pickup head automatically adjusts the position angle to keep the distance between the sound pickup head and the speaker's mouth in line. When the speaker moves, the sound pickup device also moves accordingly, automatically adjusting the telescopic length and the sound pickup angle to always keep the distance between the sound pickup head and the speaker's mouth in line. It can also be used for sound pickup in conference rooms or recording studios.

Claims

1. A directional sound pickup system, comprising a sound pickup device having a sound pickup head, characterized in that: It also includes a sound pickup device calling module and a sound pickup device adjusting module; The sound pickup device calling module includes: track; A carrying device, used for carrying the sound pickup device, capable of being connected to the track and moving along the track; A control module is connected to the carrying device, and the control module can drive the carrying device and the sound pickup device carried by the carrying device to move to a designated sound pickup position on the track according to a designated sound pickup task; The sound pickup device adjustment module comprises: A monitoring module, provided on the sound pickup device, for monitoring the mouth position of the speaker; A driving module, used for driving a pickup head of a sound pickup device to change an angle and change a distance between the pickup head of the sound pickup device and a mouth of a speaker; A sound pickup controller is connected to the monitoring module and the driving module. When the designated sound pickup device is at the designated sound pickup position on the track, the sound pickup controller can control the driving module to adjust the distance between the sound pickup head and the mouth of the speaker according to the monitoring result of the monitoring module, and adjust the angle of the sound pickup head at the same time, so that the sound pickup head is located in a preset fixed area of ​​the mouth of the speaker so as to accurately capture the sound emitted by the speaker and the predetermined area around the mouth of the speaker; There is at least one sound pickup device, and each sound pickup device is correspondingly arranged on a carrying device; The track includes a placement area track and a sound pickup track connected to the placement area track, and the designated sound pickup position is set on the sound pickup track; When the control module has not received a designated sound pickup task, the carrying device and the sound pickup equipment it carries are on the placement area track; after the control module receives a designated sound pickup task, the carrying device and the sound pickup equipment it carries are controlled to move from the placement area track to a designated sound pickup position on the sound pickup track; and after the designated sound pickup task is completed, the carrying device and the sound pickup equipment it carries are controlled to move from the designated sound pickup position on the sound pickup track back to the placement area track.

2. The directional sound pickup system according to claim 1, characterized in that: The placement area track is provided with at least one entrance and exit connected to the pickup track. Each carrying device can be connected to the placement area track and move along the placement area track. It can also move out of the placement area track from one of the entrances and exits of the placement area track and move to the pickup track to perform the pickup task under the control of the control module. It can also move from the pickup track to one of the entrances and exits of the placement area track and enter the placement area track under the control of the control module.

3. The directional sound pickup system according to claim 2, characterized in that: The placement area track is one track, the entrances and exits are distributed at intervals on the placement area track, and each entrance and exit and the sound pickup track is also provided with a branch track.

4. The directional sound pickup system according to claim 3, characterized in that: The control module stores in advance the information of the location of each carrying device and the sound pickup device it carries.

5. The directional sound pickup system according to any one of claims 1 to 4, characterized in that: The method for obtaining the designated sound pickup task is: through the electrical signal detection module, sound detection module or motion detection module connected to the control module, once the control module receives the trigger signal of the electrical signal detection module, the sound detection module or the motion detection module, the control module receives the designated sound pickup task.

6. The directional sound pickup system according to any one of claims 1 to 4, characterized in that: The method for obtaining the designated sound pickup position corresponding to the designated sound pickup task is as follows: a designated sound pickup position corresponding to each different designated sound pickup task is pre-set in the control module, and once the control module receives the designated sound pickup task, the designated sound pickup position corresponding to the designated sound pickup task can be obtained.

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