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Audio signal processing method and device

An audio signal processing and audio signal technology, which is applied in the field of audio signal processing methods and devices, can solve the problems of small reverberation time range and limited reverberation adjustment effect, so as to improve the uniformity of the sound field, reduce the correlation, and improve the reverberation The effect of loud gain

Active Publication Date: 2020-01-31
GUANGZHOU LEAFUN CULTURE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that the adjustable reverberation time range of this method is small, which makes the reverberation adjustment effect limited

Method used

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  • Audio signal processing method and device
  • Audio signal processing method and device
  • Audio signal processing method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0062] see figure 2 , figure 2 It is a schematic flowchart of an audio signal processing method disclosed in an embodiment of the present invention. like figure 2 As shown, the audio signal processing method may include the following steps.

[0063] 201. An audio signal processing apparatus acquires reverberation audio signals of multiple audio input channels.

[0064] 202. The audio signal processing apparatus distributes each reverberation audio signal to multiple audio output channels, so that each audio output channel obtains multiple sub audio signals.

[0065] In the embodiment of the present invention, the audio signal processing device can evenly distribute each reverberation audio signal to multiple audio output channels, that is, if the audio signal processing device is connected to N (N is a positive integer) audio output channels, then For a reverberation audio signal P, the sub-audio signal assigned to any audio output channel is

[0066] see image 3 ,...

Embodiment 2

[0082] see Figure 5 , Figure 5 It is a schematic flowchart of another audio signal processing method disclosed in the embodiment of the present invention. like Figure 5 As shown, the audio signal processing method may include the following steps.

[0083] 501. An audio signal processing apparatus acquires original audio signals of multiple audio input channels.

[0084] In the embodiment of the present invention, the original audio signal can be an audio signal that is collected at the actual performance site and has not been replayed by a sound amplification device and has not been reflected (such as direct sound), or it can be an audio signal that has been reflected multiple times (such as early reflection). Sound) or an audio signal reproduced by amplifying equipment (such as reverberation sound), without limitation.

[0085] 502. The audio signal processing device performs reverberation processing on multiple pieces of original audio information according to preset ...

Embodiment 3

[0110] see Image 6 , Image 6 It is a schematic structural diagram of an audio signal processing device disclosed in an embodiment of the present invention. Image 6 The audio signal processing device shown is connected to multiple sound pickup devices and multiple sound amplification devices, each sound pickup device corresponds to an audio input channel, and each sound amplification device corresponds to an audio output channel. like Image 6 As shown, the electronic device may include a first acquiring unit 601, an allocating unit 602, an updating unit 603, and an output unit 604, wherein:

[0111] The first acquisition unit 601 is configured to acquire reverberation audio signals of multiple audio input channels.

[0112] The allocation unit 602 is configured to allocate each reverberation audio signal to multiple audio output channels, so that each audio output channel obtains multiple sub-audio signals.

[0113] The updating unit 603 is configured to update the phas...

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Abstract

The embodiment of the invention relates to the technical field of audio processing. Disclosed are an audio signal processing method and device. The method is applied to an audio signal processing device, and the audio signal processing device is connected to a plurality of sound pickup devices and a plurality of sound amplification devices. Each sound pickup device corresponding to an audio inputchannel, and each sound amplification device corresponding to an audio output channel. The method comprises the following steps: acquiring reverberation audio signals of a plurality of audio input channels; distributing each reverberation audio signal to a plurality of audio output channels, so that each audio output channel obtains a plurality of sub-audio signals; updating phases of the plurality of sub-audio signals to obtain a plurality of processed audio signals; wherein the phases of the plurality of processed audio signals are irrelevant; and outputting a plurality of processed audio signals through the audio output channel. By implementing the embodiment of the invention, the effect of audio analog reverberation adjustment can be improved.

Description

technical field [0001] The present invention relates to the technical field of audio processing, in particular to an audio signal processing method and device. Background technique [0002] In order to ensure the best audio-visual effects for various program performances, many professional theaters have been built at home and abroad, such as theaters, opera houses and multi-purpose halls. These professional theaters usually need to adjust the reverberation time of the audio signal according to different performance purposes (such as operas, concerts, etc.) to optimize the acoustic environment. At present, the common reverberation adjustment method mainly adjusts the reverberation time of the indoor audio signal through the sound construction method at the mechanical level, for example, changing the indoor space volume, adding a space coupling cavity, or changing the sound-absorbing material of the ceiling, wall and other parts Wait. However, it has been found in practice t...

Claims

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Application Information

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IPC IPC(8): H04S7/00
CPCH04S7/305
Inventor 李志雄黄石锋黄庆杰
Owner GUANGZHOU LEAFUN CULTURE SCI & TECH