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Method,device, system and apparatus for testing microphone array and storage medium

A microphone array and microphone technology, applied in electrical components and other directions, can solve problems affecting application, inaccuracy, microphone array performance testing, etc., to achieve the effect of improving accuracy and reducing difficulty

Active Publication Date: 2019-01-25
BEIJING XIAOMI INTELLIGENT TECH CO LTD
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Problems solved by technology

As a result, related technologies have not conducted a reasonable performance test on the entire microphone array, ignoring the influence of the relationship between the microphones on the entire array, resulting in relatively one-sided and inaccurate performance test results. Even if the performance test is qualified, it is still possible Will affect subsequent applications

Method used

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  • Method,device, system and apparatus for testing microphone array and storage medium
  • Method,device, system and apparatus for testing microphone array and storage medium
  • Method,device, system and apparatus for testing microphone array and storage medium

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Embodiment approach

[0211] In another embodiment, as another implementation of the frequency response consistency acquisition module, the frequency response consistency acquisition module includes:

[0212] The inter-channel frequency response average calculation sub-module is configured to: calculate the average value of all frequency responses corresponding to each frequency point according to all frequency response curves, and obtain the multi-channel frequency response average value of each frequency point;

[0213] The frequency response mean value error modulus calculation sub-module is configured to: calculate the absolute value of the difference between the frequency response of each frequency point of each frequency response curve and the corresponding multi-channel frequency response mean value, and obtain the frequency response of each frequency point of each frequency response curve The modulus of the mean error of the frequency response;

[0214] The single-frequency point modulus me...

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Abstract

The invention provides a method,device, system and apparatus for testing a microphone array and a storage medium. The method comprises the following steps: receiving an audio signal obtained by collecting test audio by the microphone array; processing the audio signal to obtain a single channel designation parameter of each microphone and a channel-to-channel designation parameter between the microphones; determining the performance of the microphone array according to the single channel designated parameter and the channel-to-channel designated parameter, and outputting a performance test result; wherein, the single-channel specified parameters include sensitivity level, sensitivity level curve, total harmonic distortion parameter, total harmonic distortion curve, noise level, signal-to-noise ratio, tolerance of frequency response, tightness parameter and truncation parameter; the specified parameters among the channels include frequency response consistency parameters, time delay consistency parameters and correlation parameters. Thus, the present disclosure improves the accuracy of performance test results and reduces the difficulty of performance testing of microphone arrays.

Description

technical field [0001] The present disclosure relates to the technical field of sound pickup equipment testing, and in particular to a testing method, device, system, equipment and storage medium of a microphone array. Background technique [0002] The microphone array is composed of a certain number of acoustic sensors (microphones) arranged according to certain rules, which are used to sample and process the spatial characteristics of the sound field, and are widely used in artificial intelligence, such as smart TVs, smart air conditioners, robots, etc. Application scenarios. [0003] However, due to the diversification of application scenarios, the microphone array needs to be adjusted adaptively, such as adjusting the installation method of the microphone array, the cavity of the microphone, the sealing material, and / or the sealing method; thus causing the sound pickup performance of the microphone array to vary. Qi, will affect subsequent applications, for example, hin...

Claims

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Application Information

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IPC IPC(8): H04R29/00
CPCH04R29/005
Inventor 刘孟美许凡蒋佳为张伟
Owner BEIJING XIAOMI INTELLIGENT TECH CO LTD
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