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Pickup method and device based on double microphones and computer equipment

A technology with dual microphones and computer programs, applied in speech analysis, instruments, etc., can solve the problems of large amount of calculation, complex structure of sound pickup device, and high cost, so as to improve robustness, improve sound pickup effect, and reduce hardware production cost Effect

Active Publication Date: 2020-04-21
深圳市友杰智新科技有限公司
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Problems solved by technology

[0003] The main purpose of this application is to provide a sound pickup method, device and computer equipment based on dual microphones, aiming to solve the drawbacks of existing microphone array sound pickup devices with complex structure, large amount of calculation and high cost

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  • Pickup method and device based on double microphones and computer equipment
  • Pickup method and device based on double microphones and computer equipment
  • Pickup method and device based on double microphones and computer equipment

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Embodiment Construction

[0069] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0070] refer to figure 1 , an embodiment of the present application provides a method for picking up sound based on dual microphones, including:

[0071] S1: Acquire a sound signal, wherein the sound signal is a dual-channel time-domain signal;

[0072] S2: converting the sound signal to the frequency domain to obtain a dual-channel frequency domain signal;

[0073] S3: performing a fixed beam on the dual-channel frequency-domain signal to generate a first single-channel frequency-domain signal;

[0074] S4: Calculate the speech presence probability of the first single-...

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Abstract

The invention provides a pickup method and device based on double microphones, computer equipment and a computer readable storage medium, and the method comprises the steps: receiving a sound signal through the double microphones, converting the sound signal into a double-channel frequency domain signal, and carrying out fixed beam forming of double-channel frequency domain data, thereby generating a first single-channel frequency domain signal; performing noise reduction on the first single-channel frequency domain signal according to a preset algorithm to obtain a second single-channel frequency domain signal; and finally, converting the second single-channel frequency domain signal into a time domain, generating a final audio signal, and completing the whole pickup process of the doublemicrophones. In the process of realizing sound pickup, the whole sound pickup process can be completed only by the double microphones, so that the hardware production cost is effectively reduced. Inthe noise reduction process, the preset algorithm calculates the voice existence probability and updates the noise spectrum by using the double-microphone coherence function, so that the robustness tofar-field reverberation and noise is greatly improved under the condition that the calculated amount is small, and the pickup effect is effectively improved.

Description

technical field [0001] The present application relates to the technical field of audio processing, in particular to a dual-microphone-based sound pickup method, device and computer equipment. Background technique [0002] With the rise of intelligent voice, the use of microphone array technology to realize far-field voice pickup has become one of the current popular technologies. In order to achieve a better far-field interaction effect in the existing microphone array sound pickup device, four microphones or six microphones are usually used. However, due to the large number of microphones, the system of the microphone array sound pick-up device is complicated, and various parameters such as sound source position information are required for sound pick-up. The amount of calculation is large, the cost is high, and it cannot be applied to small devices such as translators. Contents of the invention [0003] The main purpose of the present application is to provide a sound p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0216G10L21/0232
CPCG10L21/0216G10L21/0232G10L2021/02166
Inventor 王维王广新杨汉丹
Owner 深圳市友杰智新科技有限公司
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