Microphone array based sound field processing method and electronic device

A microphone array and sound field processing technology, applied in branch equipment, telephone communication, electrical components, etc., can solve the problems that electronic equipment cannot achieve stereo surround sound communication, and the microphone array is large in size.
CN104754471AInactive Publication Date: 2015-07-01HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2015-07-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The embodiment of the invention discloses a microphone array based sound field processing method and an electronic device. The microphone array based sound field processing method comprises the steps of processing microphone arrays including n omni-directional microphones in the mode that three omni-directional microphones serving as a group form a triangular microphone array to obtain a mean value of sound field 1-order components pointed to the X-axis and Y-axis in the triangular microphone arrays, using the mean value as the sound field 1-order component of the X-axis and Y-axis in the whole microphone arrays, then utilizing the mean value of the microphone signals of the n omni-directional microphones to obtain 0-order component of a sound field, obtaining a loudspeaker stimulus signal according a decoding matrix preset according to the loudspeaker position after the components in the W-direction, X-direction and Y-direction are obtained, and utilizing the stimulus signal to reconstruct a surrounding sound field through a loudspeaker. Accordingly, arrangement of a mobile terminal is facilitated by adopting the low-cost and small sized omni-directional microphones, and the purposes of surrounding communication and sound field recording are achieved.
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Description

technical field

[0001] The present invention relates to the technical field of voice communication, and more specifically, relates to a microphone array-based sound field processing method and electronic equipment. Background technique

[0002] In order to meet people's increasing living and working needs, a voice conferencing system capable of realizing voice conferences or multi-person voice communication is widely used. Most of the current voice conferencing systems are complex and expensive, and only large companies can afford them. For small and medium-sized enterprises or families, mobile terminals that pay a small price to realize voice conferences or multi-person voice communication are used. and other electronic devices as conference terminals.

[0003] In the prior art, large-scale audio conferencing systems usually use multiple microphones to form a microphone array for multi-channel voice collection, wherein the multi-channel voice signals are mainly used for vo...

Claims

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