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Calibration method and device based on microphone array

A technology of a microphone array and a calibration method, applied in the field of calibration methods and devices based on a microphone array, can solve the problems of high cost, large workload, low efficiency, etc., and achieve the effects of reducing differences, eliminating errors, and improving accuracy

Inactive Publication Date: 2017-11-17
WEIFANG GOERTEK MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing binning method has a large workload, low efficiency, and high cost, and multiple tests will lead to a cumulative increase in the sensitivity error of the microphone

Method used

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  • Calibration method and device based on microphone array
  • Calibration method and device based on microphone array
  • Calibration method and device based on microphone array

Examples

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Embodiment Construction

[0045] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0046] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0047] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0048] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a calibration method and device based on a microphone array. The calibration method includes the steps of adjusting the sensitivity of a first microphone to a target sensitivity; detecting and taking an actual sensitivity of the first microphone as a reference sensitivity; and adjusting the sensitivity of a second microphone to the reference sensitivity. By the calibration method of the embodiment, the accuracy of the calibration of the microphone array can be improved, the errors generated when the microphones are mounted on a circuit board can be reduced or eliminated, and the differences between the sensitivities of the microphones can be significantly reduced.

Description

technical field [0001] The present invention relates to the technical field of microphone calibration, and more specifically, the present invention relates to a calibration method and device based on a microphone array. Background technique [0002] The current automotive and other consumer peripheral products have higher and higher requirements for the pairing of all microphones in the microphone array, especially the sensitivity pairing, which has achieved higher performance and multi-application integration. The sensitivity pairing refers to the sensitivity between The difference is smaller than the set difference. [0003] In the prior art, the sensitivity of a single microphone is usually calibrated, and then the calibrated microphone is mounted on a circuit board to obtain a microphone array. [0004] However, after mounting the calibrated microphone on the circuit board, the sensitivity of the microphone will deviate due to the stress between the microphone and the c...

Claims

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Application Information

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IPC IPC(8): H04R29/00
CPCH04R29/005
Inventor 安春璐窦健强
Owner WEIFANG GOERTEK MICROELECTRONICS CO LTD
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