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Microphone directivity adjusting method and circuit

A technology of adjusting circuit and adjusting method, applied in the field of microphones, can solve the problem that the directivity adjustment of microphones cannot meet market demands, etc.

Pending Publication Date: 2022-07-05
SHENZHEN MAONO TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The invention solves the technical problem that the microphone directivity adjustment cannot meet the market demand, and provides a microphone directivity adjustment method and circuit

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  • Microphone directivity adjusting method and circuit
  • Microphone directivity adjusting method and circuit
  • Microphone directivity adjusting method and circuit

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Embodiment Construction

[0039] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0040] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc. is based on the orientation or position shown in the drawings The relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present ...

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Abstract

The invention belongs to the technical field of microphones, and particularly relates to a microphone directivity adjusting method and circuit. The microphone directivity adjusting method comprises the following steps: acquiring a sound source signal and generating a first audio signal, and acquiring the sound source signal and generating a second audio signal; according to the initial amplitude parameter, adjusting the amplitude of the first audio signal to obtain a first intermediate audio signal, and adjusting the amplitude of the second audio signal to obtain a second intermediate audio signal; performing difference processing on the first intermediate audio signal and the second intermediate audio signal through an arithmetic unit to obtain a terminal audio signal; the terminal audio signal comprises real-time directivity; and when the real-time directivity does not meet the preset directivity requirement, iteratively updating the initial amplitude parameter until the real-time directivity meets the preset directivity requirement, and determining the terminal audio signal meeting the preset directivity requirement as an audio output signal. According to the microphone directivity adjusting method, continuous adjustment of the microphone directivity can be realized.

Description

technical field [0001] The invention belongs to the technical field of microphones, and in particular relates to a method and circuit for adjusting the directivity of a microphone. Background technique [0002] With the rapid development of emerging fields such as artificial intelligence and voice interaction, smart microphones are increasingly entering people's lives. In the field lens for multi-party conversations such as multi-person chats and teleconferences, since there are multiple sound sources in different directions, it is usually applied to the microphone array. When the current speaker is speaking, after the microphone array collects the sound source information, the directivity of the microphone is adjusted so that the directivity of the microphone array points to the speaker to be collected. [0003] In the prior art, the microphones with directivity in the microphone array are usually only cardioid microphones, omnidirectional microphones, and figure-eight mic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/32
CPCH04R1/32H04R1/326
Inventor 周洪鲁骏
Owner SHENZHEN MAONO TECH CO LTD
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