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Time delay estimation method and device

A technology for time delay estimation and estimation value, which is applied in the field of time delay estimation method and device, can solve the problems of anti-reverberation, poor anti-noise ability and low accuracy, and achieves the effect of accurate time delay estimation value and improved accuracy

Inactive Publication Date: 2017-11-24
BEIJING HUAJIE IMI TECH CO LTD
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Problems solved by technology

[0004] However, this method has poor anti-reverberation and anti-noise ability, and the accuracy is not high.

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Embodiment Construction

[0053] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0054] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0055] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are on...

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Abstract

The present invention provides a time delay estimation method and device. The method comprises: when detecting that the current frame of a first audio signal is a speech frame, calculating the signal to noise ratio of the current frame; performing adaptive adjustment of a speech signal data block corresponding to the current frame according to the signal to noise ratio of the current frame, wherein the speech signal data block is configured to construct the linear system of equations for estimation of an acoustic transfer functions ratio; and constructing the linear system of equations according to the data block after regulation, solving the estimation value of the acoustic transfer functions ratio, and determining the time delay estimation value according to the estimation value of the acoustic transfer functions ratio. Therefore, the time delay estimation method and device can improve the time delay estimation accuracy.

Description

technical field [0001] The invention relates to the field of sound source localization, in particular to a time delay estimation method and device. Background technique [0002] Among the existing sound source localization techniques, the method based on time delay estimation is the most widely used, and the core problem of this method is the accuracy of time delay estimation. [0003] At present, the generalized cross correlation method (Generalized Cross Correlation, GCC) is the most common time delay estimation method. It generally needs to calculate the cross-correlation function of the two signals, and the delay value is the peak position of the cross-correlation function of the two signals. [0004] However, this method has poor anti-reverberation and anti-noise ability, and the accuracy is not high. Contents of the invention [0005] In view of this, the present invention provides a time delay estimation method and device to improve the accuracy of time delay esti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0224G10L25/06G10L25/21G10L25/78G10L25/90
CPCG10L21/0224G10L25/06G10L25/21G10L25/78G10L25/90
Inventor 王行李骊杨高峰李朔盛赞
Owner BEIJING HUAJIE IMI TECH CO LTD
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