Sound source positioning method and device and air conditioner

A sound source localization and noise amplitude technology, applied in positioning, measuring devices, instruments, etc., can solve problems such as weak indoor reverberation and sound diffraction processing capabilities, affect sound source identification, and cannot filter out background noise, etc., to achieve improved Recognition accuracy, double noise reduction effect, practical enhancement effect

Inactive Publication Date: 2017-10-20
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0004] However, although the algorithm principle in the above technology is simple, the error is large
The actual home appliance use environment is mostly a far-field sound recognition environment, and there are often large environmental noises and strong rever

Method used

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  • Sound source positioning method and device and air conditioner
  • Sound source positioning method and device and air conditioner
  • Sound source positioning method and device and air conditioner

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] It should be noted that when the microphone array is used to receive the audio signal from the sound source, due to the limited pickup range of the microphone, when the sound source is far away from the microphone array, the audio signal received by the microphone is weak. The signal is amplified. However, when the audio signal is amplified, the noise signal in the audio signal is also amplified, so that the audio signal received by the microphone array is very poor, which affects the speech recognition effect of the audio...

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Abstract

The invention discloses a sound source positioning method and device, and the method comprises the steps: obtaining an audio signal received by a microphone array, wherein the microphone array comprises a plurality of microphones; obtaining the relative time difference between the audio signal received by any two of the plurality of microphones according to the audio signals and a preset parameter, wherein the preset parameter is set according to the SNR (signal to noise ratio); and carrying out the positioning of the audio signal according to the relative time difference between the audio signal received by any two of the plurality of microphones and the position of each microphone. The method can effectively and adaptively reduce the environment noise, has the strong capability of adapting to and resisting the reverberation and diffraction noise in a far-field environment, improves the recognition precision of a far-field sound source based on the microphone array, and improves the recognition practicality of the far-field sound source. The invention also proposes an air conditioner, a non-temporary computer readable storage medium, and a computer program product.

Description

technical field [0001] The present invention relates to the field of sound source localization, in particular to a sound source localization method, a sound source localization device, an air conditioner, a non-transitory computer-readable storage medium and a computer program product. Background technique [0002] Home appliances such as air conditioners and electric fans have become indispensable products in people's lives. With the rapid development of artificial intelligence technology, home appliances with voice recognition functions are emerging in an endless stream, which greatly improves people's experience in using home appliances. . Speech recognition technology relies on voice pickup, and the core component of voice pickup is a microphone, that is, the voice input is obtained through a microphone array. However, the microphone array not only picks up the voice signal, but also simultaneously picks up various noises mixed in the voice signal. Before voice recognit...

Claims

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Application Information

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IPC IPC(8): G01S5/20
CPCG01S5/20
Inventor 张新健
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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