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Sound source positioning method and apparatus

A technology of sound source localization and sound pressure difference, which is applied in measurement devices, stereo circuit arrangement, microphone signal combination, etc., can solve the problems of low target sound source pickup accuracy and misjudgment of sound source localization.

Active Publication Date: 2017-08-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a sound source localization method and device to solve the problem of easy misjudgment of sound source localization when the existing target voice is picked up in a directional manner, resulting in low accuracy of picking up the target sound source

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  • Sound source positioning method and apparatus

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Embodiment Construction

[0112] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0113] In the embodiment of the present invention, the terminal may be a device that provides voice and / or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, such as: a mobile phone (or called "cellular" phone), which can be portable, pocket, handheld, wearable devices (such as smart watches, smart bracelets, etc.), tablet computers, personal computers (PC...

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Abstract

The present invention discloses a sound source positioning method and apparatus, solving the problem of low pickup accuracy in directed pickup of a target voice in the prior art. The method is applied to a terminal with two microphones at the top. The two microphones are respectively arranged at the front and the back of the terminal. The method comprises the steps of when the terminal is in a video call state, and when whether a target user exists in a shooting range of a camera is determined, collecting a sound signal by the two microphones and calculating, based on the collected sound signal, a sound pressure difference of the two microphones; determining, by using the sound pressure difference of the two microphones, whether conditions of determining a sound source direction with the sound pressure difference are met; if the conditions are met, determining, based on the sound pressure difference of the two microphones, whether the sound signal comprises a backward sound signal; and if it is determined that the sound signal comprises the backward sound signal, filtering the backward sound signal in the sound signal. In a low signal-to-noise ratio scenario, sound source positioning based on the sound pressure difference can help improve the pickup accuracy of the target sound source.

Description

technical field [0001] The present invention relates to the technical field of terminals, in particular to a sound source localization method and device. Background technique [0002] Speech processing equipment will inevitably be interfered by various noises when collecting or inputting speech signals. In the actual voice communication system, the common noises include stationary noise and directional interference sound sources. These noises are easy to interfere with the target voice signal, seriously reducing the auditory comfort and intelligibility of the collected voice. Traditional noise estimation and single-channel speech enhancement algorithms are not ideal for suppressing directional interference noise. For this reason, it is necessary to design some systems with interference noise suppression capabilities according to the actual situation, so as to achieve the purpose of directional pickup of the target voice and the ability to suppress other noises. [0003] Mo...

Claims

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Application Information

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IPC IPC(8): H04M1/725G10L21/0208G01S11/14G06K9/00H04M1/72433
CPCG01S11/14G10L21/0208H04M1/72433G06V40/16G06V40/168G01S3/802G01S2205/01G01S5/18H04R5/04H04R5/027G10L21/0224H04R3/04H04R3/005
Inventor 王乐临
Owner HUAWEI TECH CO LTD
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