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Speech direction of arrival estimation method and device

A technology of direction of arrival estimation and direction of arrival, which is used in speech analysis, systems for determining direction or offset, direction finders using ultrasonic/sonic/infrasonic waves, etc., which can solve problems such as low accuracy and improve accuracy. and accuracy, the effect of improving accuracy

Active Publication Date: 2020-12-15
AISPEECH CO LTD
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Problems solved by technology

In the face of the refraction problem, there is also a multi-channel blind identification method to obtain the delay estimate with the strongest impulse response. The delay estimate obtained by this method must be an integer multiple of the sampling time, so the accuracy is very low

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  • Speech direction of arrival estimation method and device
  • Speech direction of arrival estimation method and device
  • Speech direction of arrival estimation method and device

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Embodiment Construction

[0031] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0032] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0033] This application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program mod...

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Abstract

The invention discloses a voice arrival direction estimation method and device. The method comprises the steps that maximum peak search is carried out on a number of voice signals collected by a microphone array to determine a number of alternative directions of arrival; signal enhancement processing is carried out on a number of alternative directions of arrival to acquire enhanced signals in multiple directions; the enhanced signals in multiple directions are input into a pre-trained neural network model to acquire a number of posterior probability values corresponding to the enhanced signals in multiple directions; at least one alternative direction of arrival corresponding to at least one posteriori probability value greater than a set threshold in a number of posteriori probability values is determined; and the voice arrival direction is determined according to at least one enhanced signal in at least one alternative direction of arrival. The arrival direction estimation method based on a neural network is combined with a traditional method based on signal processing. The problem of inaccurate estimation of equipment against a wall in a strong interference scene is better solved.

Description

technical field [0001] The present application relates to the technical field of voice information number processing, in particular to a voice direction-of-arrival estimation method and device. Background technique [0002] At present, the voice consumer electronics market is becoming more and more popular. Such products often need to estimate the incoming wave direction of voice, especially the direction of wake-up speech, and enhance the signal in this direction to achieve the purpose of improving wake-up or recognition accuracy. ; There are some voice direction-of-arrival estimation methods on the market, such as traditional methods such as muisc, esprit and GCC-phat. [0003] The technology of angle of arrival estimation can be divided into methods based on traditional signal processing and methods based on neural network according to its implementation method; the speech signal is a typical broadband signal, and the speech signal is usually divided into specific indepen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S3/802G10L25/30
CPCG01S3/802G10L25/30
Inventor 许堃
Owner AISPEECH CO LTD
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