Sound field reconstruction method, device and equipment, and storage medium

A technology for sound field reconstruction and signal reconstruction, which is applied in the arrangement of speaker casings, stereo systems, and spatial/structural arrangements of speakers, etc., and can solve the problems of poor reconstruction effect and low reconstruction accuracy.

Active Publication Date: 2021-08-20
IFLYTEK (SUZHOU) TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present application provides a sound field reconstruction method, device, equipment and storage medium to solve the problem of low reconstruction accuracy and poor reconstruction effect of the sound field reconstruction scheme in the prior art. The technical solution is as follows:

Method used

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  • Sound field reconstruction method, device and equipment, and storage medium
  • Sound field reconstruction method, device and equipment, and storage medium
  • Sound field reconstruction method, device and equipment, and storage medium

Examples

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no. 1 example

[0057] see figure 1 , which shows a schematic flowchart of the sound field reconstruction method provided by the embodiment of the present application, the method may include:

[0058] Step S101: Obtain the sound signal collected by the microphone set in the target area as the target sound signal.

[0059] Wherein, the target area is a sound field reconstruction area in a designated space, and the sound field reconstruction area is an area where sound field reconstruction is required. It should be noted that there may be one sound field reconstruction area or multiple sound field reconstruction areas in the designated space, when there are multiple sound field reconstruction areas in the designated space.

[0060] In this embodiment, a microphone (either a single microphone or a microphone array) may be set in the target area to collect signals through the microphones set in the target area, and the signals collected by the microphones set in the target area may be used as ta...

no. 2 example

[0086] It can be understood that the key to realizing sound field reconstruction is to determine the distribution weight of the sound source signal on each speaker, and the distribution weight of the sound source signal on each speaker is predicted by a pre-established weight prediction model. The focus is on the introduction of the process of establishing a weight prediction model.

[0087] As mentioned in the above-mentioned embodiment, the weight prediction model is trained by using the training sound signal corresponding to the sound field reconstruction area in the specified space. Before introducing the process of establishing the weight prediction model, firstly, the process of obtaining the training sound signal corresponding to the sound field reconstruction area Make an introduction.

[0088] There are many ways to obtain the training sound signal corresponding to the sound field reconstruction area, please refer to image 3 , which shows a schematic flowchart of a ...

no. 3 example

[0130] The embodiment of the present application also provides a sound field reconstruction device. The sound field reconstruction device provided by the embodiment of the present application is described below. The sound field reconstruction device described below and the sound field reconstruction method described above can be referred to in correspondence.

[0131] see Image 6 , shows a schematic structural diagram of the sound field reconstruction device provided by the embodiment of the present application, which may include: a signal acquisition module 601 , a weight prediction module 602 and a sound field reconstruction module 603 .

[0132] The signal acquisition module 601 is configured to acquire the sound signal collected by the microphone set in the target area as the target sound signal, wherein the target area is an acoustic field reconstruction area in a designated space where multiple loudspeakers are arranged.

[0133] The weight prediction module 602 is conf...

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Abstract

The invention provides a sound field reconstruction method and device, equipment and a storage medium, and the method comprises the steps: obtaining a sound signal collected by a microphone in a target region as a target sound signal, predicting the corresponding weight of each loudspeaker on the target sound signal based on the target sound signal and a pre-established weight prediction model, distributing the sound source signal to each loudspeaker to be played based on the predicted weight so as to achieve sound field reconstruction of the target area, wherein the weight corresponding to one loudspeaker is the distribution weight of the sound source signal on the loudspeaker, the weight prediction model is obtained by training a training sound signal corresponding to the sound field reconstruction area, the training target of the weight prediction model is to enable the sound signal reconstructed based on the corresponding weight of each loudspeaker on the training sound signal to approach to the target reconstruction signal of the sound field reconstruction area corresponding to the training sound signal. According to the sound field reconstruction method provided by the invention, the expected sound signal can be accurately reconstructed for the sound field reconstruction region.

Description

technical field [0001] The present application relates to the technical field of sound field reconstruction, and in particular to a sound field reconstruction method, device, equipment and storage medium. Background technique [0002] With the rapid development of technologies such as 3D movies and virtual reality, sound field reconstruction technology, as the core technology to provide users with high-fidelity immersive experience, has gained more and more attention. Among them, the sound field reconstruction technology can enable people in different areas of the same space to hear different sound signals without crosstalk from sound signals in other areas, which can improve listening quality and speech intelligibility. [0003] The general idea of ​​realizing sound field reconstruction is to determine the distribution weight of the sound source signal on the speaker set in the designated space for the target reconstruction signal (that is, the specified sound source signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S7/00H04R5/02
CPCH04R5/02H04R2205/024H04S7/30H04S2400/15
Inventor 卫慧慧马桂林胡明清高素云梁萌
Owner IFLYTEK (SUZHOU) TECH CO LTD
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