Sound signal time delay estimation method and device

A technology for sound signal and time delay estimation, which is applied in speech analysis, instruments, etc., and can solve problems such as low accuracy

Active Publication Date: 2015-06-10
GUANGZHOU BAIGUOYUAN INFORMATION TECH CO LTD
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Problems solved by technology

[0005] In order to solve the problem of low accuracy of the time delay estimation method involved in the above techn

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  • Sound signal time delay estimation method and device
  • Sound signal time delay estimation method and device
  • Sound signal time delay estimation method and device

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Embodiment Construction

[0074] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0075] Please refer to figure 1 , which shows a method flow chart of a method for estimating a time delay of a sound signal provided by an embodiment of the present invention. Examples are given in electronic equipment. The delay estimation method may include the following steps:

[0076] Step 102, acquiring two channels of sound signals.

[0077] Step 104, perform coherence matching on the two-way sound signals according to the short-time Fourier transform of the two-way sound signals to obtain a first matching result, the first matching result includes the first matching position and the first matching degree of the two-way sound signals .

[0078] Step 106: Perform coherence matching on the two-way sound signals according to the interspec...

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Abstract

The invention discloses a sound signal time delay estimation method and device and belongs to the technical field of audio processing. The sound signal time delay estimation method comprises the steps of obtaining two sound signals, conducting coherence matching on the two sound signals through short-time Fourier transformation of the two sound signals to obtain a first matching result, wherein the first matching result includes first matching positions and first matching degrees of the two sound signals; conducting coherence matching on the two sound signals according to spectral correlation of power spectrums of the two sound signals to obtain a second matching result, wherein the second matching result includes second matching positions and second matching degrees of the two sound signals; calculating the time delay of the two sound signals according to the first matching result and the second matching result. The problem that a relevant time delay estimation method is low in accuracy is solved. The sound signals are matched from two aspects of frequency domain distribution and power spectrums, the two matching results are integrated to determine a final matching result, and matching accuracy and time delay estimation accuracy are improved.

Description

technical field [0001] The present invention relates to the technical field of audio processing, in particular to a method and device for estimating time delay of a sound signal. Background technique [0002] The time delay estimation algorithm of the sound signal has been widely used in many fields such as sound matching, codec alignment, and sound ranging. [0003] The prior art also provides a variety of different time delay estimation methods, one of which is a time delay estimation method based on correlation analysis which is widely used. The basic idea of ​​this method is to estimate the time delay between the two sound signals by using the similarity of the two sound signals in the frequency domain. [0004] In the process of realizing the present invention, the inventors found that the above-mentioned technology has at least the following problems: the above-mentioned delay estimation method based on correlation analysis only considers the similarity of the two sou...

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Application Information

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IPC IPC(8): G10L25/18G10L25/48
Inventor 陈超
Owner GUANGZHOU BAIGUOYUAN INFORMATION TECH CO LTD
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