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Sound source positioning method based on signal-to-noise ratio weight optimization updating

A technology of sound source localization and signal-to-noise ratio, which is used in localization, measurement devices, instruments, etc., can solve the problems of poor localization performance, inability to meet demand, strong noise, etc., and achieve strong sound pickup ability, good performance and promotion and application prospects. , the effect of improving experimental performance

Pending Publication Date: 2021-03-23
DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology

[0004] In the existing technology, the traditional time delay estimation algorithm is usually used for sound source localization. Due to the severe reverberation in the indoor environment and the strong noise in the outdoor environment, this has a great impact on the localization performance. The traditional sound source localization method has high reverberation Poor positioning performance in environments with strong noise and low signal-to-noise ratio (SNR), unable to meet the needs of various practical scenarios

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  • Sound source positioning method based on signal-to-noise ratio weight optimization updating
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  • Sound source positioning method based on signal-to-noise ratio weight optimization updating

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[0026] In order to better understand the above-mentioned purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0027] In the following description, a lot of specific details are set forth in order to fully understand the application, however, the application can also be implemented in other ways different from those described here, therefore, the protection scope of the application is not limited by the following disclosure Limitations of specific embodiments.

[0028] In this embodiment, a five-element microphone array is used for sound collection. When collecting, it is first transmitted to the sound source signal microprocessor, which includes modules such as integrat...

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Abstract

The invention discloses a sound source positioning method based on signal-to-noise ratio weight optimization updating. The method is used for performing sound source positioning on a sound emitting element in to-be-detected equipment, and comprises the following steps: 1, amplifying a collected first sound signal emitted by a sound source according to a preset proportion, and performing gain adjustment to generate a second sound signal; 2, when it is judged that the second sound signal is not an abnormal noise signal, sequentially calculating the current environment signal-to-noise ratio corresponding to the second sound signal and the signal-to-noise ratio related weight mean value of the second sound signal, and calculating the transmission delay of the second sound signal correspondingto the reference sound sensor according to the signal-to-noise ratio related weight mean value; and 3, according to the transmission time delay and the position coordinates of the sound sensor, calculating the positioning information of the sound source, wherein the positioning information is used for positioning the sound source. By means of the technical scheme, the specific position informationof the sound production part of the device can be captured rapidly and accurately, and intelligent real-time positioning of the sound source is achieved.

Description

technical field [0001] The present application relates to the technical field of sound source localization, and in particular, relates to a sound source localization method based on SNR weight optimization and update. Background technique [0002] Various sounds such as noise and abnormal sound are very common in daily life and industrial production. The original sound positioning function of the human ear is only to solve the basic problems of life and survival, and the positioning accuracy is very limited. Therefore, the application of sound source localization technology is very important. Such products can quickly locate the noise source or the location of abnormal noise, thereby helping engineers quickly solve problems and greatly improving work efficiency. [0003] Nowadays, microphone arrays have been widely used in sound signal processing fields such as speech enhancement and speech recognition. Sound source localization is a technology to determine the location of a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 赵国伟曹冰张政赵锐赵磊郝璐璐
Owner DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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