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Correction method and device for array microphone, equipment and storage medium

A calibration method and microphone technology, applied to electrical components and other directions, can solve the problems of cumbersome calibration process and low production efficiency of array microphones, and achieve the effect of improving production efficiency

Active Publication Date: 2017-12-22
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above method, the array microphone needs to be corrected for amplitude during the production process of the array microphone, and the correction process is cumbersome, resulting in low production efficiency of the array microphone

Method used

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  • Correction method and device for array microphone, equipment and storage medium
  • Correction method and device for array microphone, equipment and storage medium
  • Correction method and device for array microphone, equipment and storage medium

Examples

Experimental program
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Embodiment 1

[0029] figure 1 It is a flow chart of a method for calibrating an array microphone provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation where the calibration of the array microphone is required. and\or hardware components. The method provided in this embodiment specifically includes the following steps:

[0030] Step 110, acquiring the voice sampling amplitude groups corresponding to the microphones at the same time when the number of consecutive groups is set.

[0031] Specifically, during the use of the array microphones, each microphone in the array microphones collects voice signals in real time, and converts the collected voice signals into corresponding electrical signals for output. The output electrical signal is sampled synchronously, and the voice sampling signal of each microphone at the same time can be obtained every set time 1 / f, and then the voice sampling amplitude of each microphone at the same time can be obtaine...

Embodiment 2

[0053] figure 2 It is a flow chart of a method for calibrating an array microphone provided in Embodiment 2 of the present invention. This embodiment is further optimized on the basis of the foregoing embodiments. The method provided in this embodiment specifically includes the following steps:

[0054] Step 210: Obtain the voice sampling amplitude groups corresponding to the microphones at the same time when the number of consecutive groups is set.

[0055] Step 220: Determine the mean value or the root mean square value of the absolute values ​​of the amplitudes between the voice sample amplitudes corresponding to each microphone in the acquired voice sample amplitude group as the amplitude feature value corresponding to the microphone.

[0056] In this embodiment, the array microphone includes four microphones including microphone A, microphone B, microphone C and microphone D, and the number of consecutive groups is set to 4 for example. If the obtained 4 groups of samp...

Embodiment 3

[0076] image 3 It is a schematic structural diagram of a calibration device for an array microphone provided in Embodiment 3 of the present invention. The device may consist of software and / or hardware. The device provided in this embodiment includes:

[0077] Speech sampling amplitude group acquisition module 310, for obtaining the corresponding voice sampling amplitude group of each microphone under the same moment of setting continuous group number;

[0078] Amplitude characteristic value determining module 320, is used for determining the corresponding amplitude characteristic value of each microphone according to the described speech sampling amplitude value group that obtains;

[0079] Qualification confirmation module 330, configured to confirm whether the obtained speech sample amplitude group is qualified according to each of the amplitude feature values;

[0080] The amplitude correction coefficient confirmation module 340 is configured to determine the amplitude...

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Abstract

The invention discloses a correction method and device for an array microphone, equipment and a storage medium. The method comprises the steps of: acquiring a set continuous group number of voice sampling amplitude groups corresponding to each microphone at the same moment; according to the acquired voice sampling amplitude groups, determining an amplitude feature value corresponding to each microphone; according to each amplitude feature value, determining whether the acquired voice sampling amplitude groups are qualified; and if determining that the acquired voice sampling amplitude groups are qualified, according to each amplitude feature value, determining an amplitude correction coefficient corresponding to each microphone. According to the method provided by the invention, amplitude correction on the array microphone in the production process of the array microphone can be avoided, acquisition on the voice amplitude correction coefficient corresponding to each microphone in the using process of the array microphone is implemented, and production efficiency of the array microphone is improved.

Description

technical field [0001] The present invention relates to an array microphone application technology, in particular to a calibration method, device, equipment and storage medium for an array microphone. Background technique [0002] An array microphone (array microphone) is a device including a plurality of microphones, which is widely used in technical fields such as voice enhancement. [0003] Due to the adoption of spatial filtering technology, the speech enhancement effect of the array microphone is often better than that of a single microphone, but this is based on the premise that the characteristics of the microphones in the array microphone are highly consistent. Among them, it is very important to ensure the amplitude consistency between the microphones in the array microphone, that is, if the microphones in the array microphone are placed in the same position and collect the same voice signal, the electrical signals output by each microphone should have the same Amp...

Claims

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Application Information

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IPC IPC(8): H04R29/00
CPCH04R29/00
Inventor 刘荣
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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