Omnibearing dead-corner-free audio acquisition and recording processing system

Abstract

The utility model discloses an omnibearing dead-corner-free audio acquisition recording processing system, which comprises a high-sensitivity wide-pickup-angle pickup module, a feedback suppression module, an audio processing module, an audio recording module, a sound amplification distribution module and a sound amplification module, audio signals obtained by the pickup modules are transmitted to a signal input end of the feedback suppression module, signals processed by the feedback suppression module are transmitted to the audio processing module, and the audio processing module transmits mixed sounds of all the pickup modules to a reference signal input end of the feedback suppression module. The feedback suppression module carries out feedback suppression processing on signals input by the signal input end and signals input by the reference signal input end and then outputs the signals to the audio processing module, the audio processing module transmits the signals to the audio recording module and the sound amplification distribution module, and the sound amplification module plays the signals of the sound amplification distribution module. Therefore, the pickup distance and range of the pickup module of the sound amplification recording system are enhanced, the sound quality of sound amplification recording is clearer and more complete, and playback is more intelligent and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of multimedia, and in particular refers to an all-round audio collection and recording processing system without dead angles. Background Art

[0002] With the continuous progress of the reform of court trial records, trial records have gradually improved from the initial digitization of trial content to the integration of basic functions to later data mining, and with people as the core, gradually liberating the work intensity of clerks. At present, there are some common problems with the sound amplification and recording backup equipment used in court trials: the microphone pickup distance is too short, the pickup angle is too small, and the volume is greatly attenuated when slightly deviating from the microphone or standing to speak, resulting in the recorded sound being louder and quieter, and sometimes not; some courts use ceiling-mounted omnidirectional microphones to collect sound, which makes the ambient sound more noisy, resulting in more external sounds included in the recording; therefore, there is an urgent need for an all-round audio acquisition and recording processing system without dead ends. Utility Model Content

[0003] In order to solve the common problems mentioned in the above background technology regarding the sound amplification and recording backup equipment of court trials, the technical solution adopted by the utility model is as follows:

[0004] The invention discloses an all-round audio collection, recording and processing system without dead angles, comprising: a high-sensitivity and wide-pickup-angle pickup module, a feedback suppression module, an audio processing module, an audio recording module, a sound amplification distribution module and a sound amplification module. The audio signal picked up by the high-sensitivity and wide-pickup-angle pickup module is transmitted to the pickup module signal input end of the feedback suppression module. The feedback suppression module transmits the signal after feedback processing from the suppression module output end to the signal input end of the audio processing module. The audio processing module transmits the mixed sound of all the pickup modules from the reference signal output end to the reference signal input end of the feedback suppression module. The feedback suppression module performs corresponding feedback suppression processing on the signal input end of the pickup module and the signal input end of the reference signal input end, and then outputs the signal from the suppression module output end to the audio processing module. The audio processing module transmits the signal to the audio recording module through the processing module output end and to the sound amplification distribution module through the audio output end. The sound amplification distribution module outputs the processed signal to the sound amplification module.

[0005] Furthermore, the audio processing module adopts automatic detection technology to realize automatic gain control, automatic fault detection, and digital audio processing technology; the audio processing module supports 16 inputs and 16 outputs; supports any combination of inputs to be grouped and output from a certain output end; the audio processing module supports the output of voice excitation timing control signals at each output end to be transmitted to the audio recording module.

[0006] Furthermore, the audio processing module transmits the mixed sounds of all the pickup modules from the output end to the reference signal input end of the feedback suppression module; the audio processing module transmits the mixed sounds of all the pickup modules from the output end to the sound amplification distribution module; the audio processing module supports the output of the voice excitation control signal to be transmitted to the sound amplification distribution module.

[0007] Furthermore, the audio recording module records each audio file, adds time stamp control data to each signal transmitted through the audio processing module, and records which sound pickup module currently speaks for each recording at a certain moment on the time axis.

[0008] Furthermore, the sound amplification distribution module is a 1-input 8-output distribution module, and all 8 outputs support independent adjustment of the output volume. According to the voice excitation control signal data transmitted from the audio processing module, each pickup module can be set to correspond to a scene of each output volume.

[0009] Furthermore, the sound amplification module unit can be configured with 6 to 8 sound amplification modules according to the actual size of the site area.

[0010] The beneficial effects of the all-round audio collection and recording processing system of the utility model are as follows:

[0011] By utilizing the close connection between the feedback suppression module and the audio processing module, the problem of unclear sound quality of amplified recording caused by insufficient pickup distance and pickup range of the traditional pickup module is solved. The pickup distance and pickup range of the pickup module of the enhanced amplified recording system are achieved, making the recording playback smarter and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a signal connection diagram of an all-round audio collection and recording processing system with no blind spots.

[0013] Among them, 10-high-sensitivity wide-pickup-angle sound pickup module; 20-feedback suppression module; 30-audio processing module; 40-audio recording module; 50-sound amplification distribution module; 60-sound amplification module; 21-sound pickup module signal input terminal; 22-reference signal input terminal; 23-suppression module output terminal; 31-processing module output terminal; 32-audio output terminal; 33-reference signal output terminal. DETAILED DESCRIPTION

[0014] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 As shown, an all-round audio collection and recording processing system without dead angles includes: a high-sensitivity wide-pickup angle pickup module 10, a feedback suppression module 20, an audio processing module 30, an audio recording module 40, a sound amplification distribution module 50 and a sound amplification module. The audio signal picked up by the high-sensitivity wide-pickup angle pickup module 10 is transmitted to the pickup module signal input terminal 21 of the feedback suppression module 20. The feedback suppression module 20 transmits the signal after feedback processing from the suppression module output terminal 23 to the signal input terminal of the audio processing module 30. The audio processing module 30 converts the mixed sound of all the pickup modules from the reference signal input terminal 21 to the reference signal input terminal 22. The output terminal 33 is transmitted to the reference signal input terminal 22 of the feedback suppression module 20. The feedback suppression module 20 performs corresponding feedback suppression processing on the signal input from the pickup module signal input terminal 21 and the signal input from the reference signal input terminal 22, and then outputs the signal from the suppression module output terminal 23 to the audio processing module 30. The audio processing module 30 transmits the signal to the audio recording module 40 through the processing module output terminal 31 and to the sound amplification distribution module through the audio output terminal 32. The sound amplification distribution module outputs the processed signal to the sound amplification module 60, thereby avoiding howling in on-site sound amplification and filtering of environmental noise.

[0016] The audio processing module 30 adopts automatic detection technology to realize automatic gain control, automatic fault detection, and digital audio processing technology; the audio processing module 30 supports 16 inputs and 16 outputs; supports any combination of inputs to be grouped and output from a certain output end; the audio processing module 30 supports the output of the voice excitation timing control signal of each output end to be transmitted to the audio recording module 40; each output end of the audio processing module 30 can be set to a mixed sound output, or can be set to output only one input signal in the grouping according to the voice excitation principle; the audio processing module 30 is used to record which pickup module is currently speaking at a certain moment on the timeline for each recording, thereby improving the sound quality of each output audio and ensuring the recording quality.

[0017] The audio processing module 30 transmits the mixed sound of all the pickup modules from the output end to the reference signal input end 22 of the feedback suppression module 20; the audio processing module 30 transmits the mixed sound of all the pickup modules from the output end to the sound amplification distribution module 50; the audio processing module 30 supports the output of the voice excitation control signal to be transmitted to the sound amplification distribution module 50; the audio processing module 30 is used to realize the output scene of the sound amplification distribution module 50 corresponding to each pickup module.

[0018] The audio recording module 40 records each audio file, adds time-stamp control data to each signal transmitted through the audio processing module 30, and records which pickup module is currently speaking at a certain moment on the timeline for each recording; the audio recording module 40 adopts intelligent playback technology, and can simultaneously play back multiple recordings or single-channel mixed recordings, and can automatically jump to play the recording of the speaking period of the channel according to the time-stamp data.

[0019] The sound amplification distribution module 50 is a 1-input 8-output distribution module. All 8 outputs support independent adjustment of the output volume. According to the voice excitation control signal data transmitted from the audio processing module 30, each pickup module can be set to correspond to a scene of each output volume. When the pickup modules 10 with different high sensitivity and wide pickup angles pick up sound, the output volume corresponding to each sound amplification module can be automatically adjusted to reduce the volume of the sound amplification module facing the pickup module, thereby avoiding the occurrence of howling in on-site sound amplification.

[0020] The sound amplification module unit can be configured with 6 to 8 sound amplification modules 60 according to the actual size of the site area.

[0021] The working principle of the utility model is as follows: the high-sensitivity wide-pickup-angle sound pickup module 10 collects the sound on the scene, and transmits the collected audio signal to the sound pickup module signal input terminal 21 of the feedback suppression module 20, the feedback suppression module 20 processes the input audio signal, the feedback suppression module 20 transmits the signal after feedback processing from the suppression module output terminal 23 to the signal input terminal of the audio processing module 30, the audio processing module 30 transmits all the mixed sounds of the sound pickup modules from the reference signal output terminal 33 to the reference signal input terminal 22 of the feedback suppression module 20, the feedback suppression module 20 performs corresponding feedback suppression processing on the signal input from the sound pickup module signal input terminal 21 and the signal input from the reference signal input terminal 22, and outputs the signal from the suppression module output terminal 23 to the audio processing module 30, the audio processing module 30 transmits the signal to the audio recording module 40 through the processing module output terminal 31 And it is transmitted to the sound amplification distribution module through the audio output terminal 32, and the sound amplification distribution module outputs the processed signal to the sound amplification module for playback. The audio recording module 40 marks each signal transmitted through the audio processing module 30 with time-stamp control data, and records which sound pickup module is currently speaking at a certain moment on the time axis for each recording; by using the feedback suppression module 20 to process the audio and performing corresponding feedback processing on the original audio and the audio processed by the audio processing module 30 and then transmitting it, the problem mentioned in the background technology that "the sound amplification and recording backup equipment currently used in court trials generally has some problems: the microphone pickup distance is too short, the pickup angle is too small, and the volume is greatly attenuated when slightly deviating from the microphone or standing to speak, resulting in the recorded sound being fluctuating and sometimes absent; some courts use ceiling-mounted omnidirectional microphones to collect sound, and the ambient sound is noisier, resulting in more external sounds being included in the recording" is solved.

[0022] The utility model and its implementation methods are described above. This description is not restrictive. What is shown in the accompanying drawings is only one of the implementation methods of the utility model. The actual structure is not limited to this. In short, if ordinary technicians in this field are inspired by it, without departing from the inventive purpose of the utility model, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the protection scope of the utility model.

Claims

1. An all-round audio acquisition and recording processing system with no blind spots, characterized by: include: A high-sensitivity wide-pickup-angle sound pickup module (10), a feedback suppression module (20), an audio processing module (30), an audio recording module (40), a sound amplification distribution module (50) and a sound amplification module (60), wherein the audio signal picked up by the high-sensitivity wide-pickup-angle sound pickup module (10) is transmitted to a sound pickup module signal input terminal (21) of the feedback suppression module (20), the feedback suppression module (20) transmits the signal after feedback processing from a suppression module output terminal (23) to a signal input terminal of the audio processing module (30), and the audio processing module (30) outputs the mixed sound of all the sound pickup modules from a reference signal output terminal (33) to a reference signal output terminal (34). ) is transmitted to the reference signal input terminal (22) of the feedback suppression module (20); the feedback suppression module (20) performs corresponding feedback suppression processing on the signal input from the sound pickup module signal input terminal (21) and the signal input from the reference signal input terminal (22), and then outputs the signal from the suppression module output terminal (23) to the audio processing module (30); the audio processing module (30) transmits the signal to the audio recording module (40) through the processing module output terminal (31) and to the sound amplification distribution module (50) through the audio output terminal (32); the sound amplification distribution module outputs the processed signal to the sound amplification module (60).

2. The all-round audio acquisition and recording processing system according to claim 1, characterized in that: The audio processing module (30) adopts automatic detection technology to realize automatic gain control, automatic fault detection, and digital audio processing technology; the audio processing module (30) supports 16 inputs and 16 outputs; supports grouping any number of inputs to be output from a certain output end; and the audio processing module (30) supports outputting the voice excitation timing control signal of each output end to be transmitted to the audio recording module (40).

3. The all-round audio acquisition and recording processing system according to claim 1, characterized in that: The audio processing module (30) transmits the mixed sounds of all the pickup modules from the output end to the reference signal input end (22) of the feedback suppression module (20); the audio processing module (30) transmits the mixed sounds of all the pickup modules from the output end to the sound amplification distribution module (50); the audio processing module (30) supports the transmission of the output voice excitation control signal to the sound amplification distribution module (50).

4. The all-round audio acquisition and recording processing system according to claim 1, characterized in that: The audio recording module (40) records each audio file, adds time stamp control data to each signal transmitted through the audio processing module (30), and records which sound pickup module currently speaks in each recording at a certain moment on the time axis.

5. The all-round audio acquisition and recording processing system according to claim 1, characterized in that: The sound amplification distribution module (50) is a 1-input 8-output distribution module, and the 8-way outputs all support independent adjustment of the output volume. According to the voice excitation control signal data transmitted from the audio processing module (30), each sound pickup module can be set to correspond to a scene of each output volume.

6. The all-round audio acquisition and recording processing system according to claim 1, characterized in that: The sound amplification module unit can be configured with 6 to 8 sound amplification modules (60) according to the actual size of the site area.

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