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Method and device for estimating acoustic reverberation time

A reverberation time and acoustic technology, applied in the field of acoustic reverberation time estimation method and device, can solve the problems of weak estimation performance and cumbersome operation process, and achieve the effect of improving work efficiency and simplifying the acquisition procedure

Active Publication Date: 2020-03-17
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an acoustic reverberation time estimation method and device to solve the cumbersome operation process due to the need to establish different acoustic reverberation models and obtain parameters of sound-absorbing materials in the existing acoustic reverberation time estimation scheme, The problem of weak estimation performance

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  • Method and device for estimating acoustic reverberation time
  • Method and device for estimating acoustic reverberation time
  • Method and device for estimating acoustic reverberation time

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Embodiment 1

[0020] figure 1 It is a flow chart of an acoustic reverberation time estimation method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of estimating sound reverberation time in different environments, and the method can be executed by an acoustic reverberation time estimation device , the device may be implemented by software and / or hardware. Such as figure 1 As shown, the method includes:

[0021] S110. Acquire target reverberation speech information in the reverberation environment to be estimated.

[0022] The reverberant environment to be estimated is the environment to be detected. The target reverberant voice information can be collected by using the voice information collection equipment, or it can be a piece of sound without reverberation that is emitted and absorbed in the reverberant environment to be estimated. A reverberated sound.

[0023] Before implementing this method, it is necessary to ensure that there is...

Embodiment 2

[0035] figure 2 It is a flowchart of an acoustic reverberation time estimation method in Embodiment 2 of the present invention. On the basis of Embodiment 1, this embodiment further elaborates the operation of obtaining the average correlation coefficient, as figure 2 As shown, the method includes:

[0036] S210. Obtain target reverberation speech information in the reverberation environment to be estimated;

[0037] S220. Separate the target reverberation speech information into at least two speech components by using a bandpass filter.

[0038] A band-pass filter is a device that allows waves of a specific frequency band to pass while blocking other frequency bands. For example, the RLC oscillator circuit is an analog bandpass filter. The band-pass filter is used to separate speech information of different sound frequencies in the target reverberation speech information to obtain different speech components.

[0039] The frequency difference between different speech co...

Embodiment 3

[0056] Figure 4 Shown is a schematic structural diagram of an acoustic reverberation time estimation device provided by Embodiment 3 of the present invention, as shown in Figure 4 As shown, the acoustic reverberation time estimation device includes: a target reverberation speech information acquisition module 410 , a target average correlation coefficient acquisition module 420 and an acoustic reverberation time acquisition module 430 .

[0057] Wherein, the target reverberation voice information acquisition module 410 is used to acquire the target reverberation voice information in the reverberation environment to be estimated;

[0058] A target average correlation coefficient acquisition module 420, configured to process the target reverberation speech information in a preset manner to obtain a target average correlation coefficient of the target reverberation speech information;

[0059] The acoustic reverberation time acquiring module 430 determines the acoustic reverbe...

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Abstract

The invention discloses an acoustic reverberation time estimation method and device. The acoustic reverberation time estimation method comprises the steps that target reverberation voice information in an under estimation reverberation environment is acquired; the target reverberation voice information is processed by a preset mode so as to obtain the target average correlation coefficient of the target reverberation voice information; and acoustic reverberation time corresponding to the under estimation reverberation environment is determined according to the target average correlation coefficient and a preset acoustic reverberation model. The problems of tedious operation process and weak estimation performance caused by the fact that different acoustic reverberation models require to be established and the parameters of sound absorption material require to be acquired in the existing estimation scheme of acoustic reverberation time can be solved so that the acoustic reverberation time acquisition program can be simplified, the working efficiency can be enhanced and the acoustic reverberation time acquisition operation is enabled to be more intelligent.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of acoustic measurement, and in particular, to a method and device for estimating an acoustic reverberation time. Background technique [0002] Acoustic reverberation in the real environment has a great impact on the speech communication of people (especially hearing-impaired people who use hearing aids). At the same time, the reverberation brought by the acoustic environment also affects the performance of human-machine communication. Reverberation refers to the "residual" phenomenon of sound formed by late reflections from various interfaces in the sound field after the sound source stops sounding. The length of this residual phenomenon is characterized by reverberation time, which is recognized as The definition is the time required for the sound energy density to decay by 60dB. The estimation of acoustic reverberation time (reverberation time) in a reverberant environment is the ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0208G10L21/0216G10L21/0224
CPCG10L21/0208G10L21/0216G10L21/0224G10L2021/02082G10L2021/02168
Inventor 陈霏
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA