An indoor multi-sound source localization device and method for simulating binaural effect
A multi-sound source and sound source technology, applied in positioning, measuring devices, instruments, etc., can solve problems such as no correlation, achieve the effects of reducing measurement errors, increasing practical value, and improving positioning accuracy
Inactive Publication Date: 2017-05-03
BOHAI UNIV
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Problems solved by technology
Most of the existing patents focus on the positioning of a single sound source, such as using the difference in sound intensity or time of the sound reaching the two ears for positioning, and the two modules are generally independent and unrelated
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[0058] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0059] The binaural effect refers to: when the sound source (including complex cluster signals) is biased towards the left ear or the right ear, there is a difference in the distance from the sound source to the left ear and the right ear, which will cause the sound reaching the two ears to vary in sound intensity, time, and There is a difference in phase. This small difference is perceived by the hearing of the human ear, transmitted to the brain and compared and analyzed with the existing auditory experience stored in the brain, and the judgment of the sound direction is obtained. The human auditory system is usually divided into the auditory peripheral system and the auditory central system. It is generally believed that the spatial positioning of sound mainly depends on the intensity difference and time difference of sound ...
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The invention provides an indoor multi-sound source positioning device and method for simulating binaural effect. The device includes a sound source signal acquisition unit, a signal preprocessing unit, a signal analysis and processing unit, and a multi-sound source localization result display unit; the output end of the sound source signal acquisition unit is connected to the input end of the signal preprocessing unit, and the signal preprocessing unit's The output end is connected to the input end of the signal analysis and processing unit, and the output end of the signal analysis and processing unit is connected to the multi-sound source localization result display unit. The method comprises that each sound pressure sensor collects the sound pressure signal of the mixed sound source in real time; preprocesses the sound pressure signal of the mixed sound source collected by each sound pressure sensor; analyzes and processes the sound pressure signal of the mixed sound source collected by each sound pressure sensor, Complete the multi-sound source localization; display the multi-sound source localization result. The invention can effectively utilize the measurement data of the sound pressure sensor to locate the target sound source in the near field at low cost and conveniently, and has great practical value.
Description
technical field [0001] The invention relates to the technical field of sound source localization, in particular to an indoor multi-sound source localization device and method for simulating binaural effect. Background technique [0002] The sound source target is the most common type of operation object among many targets. The rapid and accurate recognition of the location of the spatial sound source target is the basis of sound source target separation and speech recognition. At the same time, sound source localization is a typical passive localization. The localization based on sound signals is not susceptible to electromagnetic wave interference, and is not affected by line of sight and visibility. The technology of sound detection sensors is mature, low in cost and widely used in practice. In addition, binaural sound source localization is an important branch of sound source localization. The human and animal auditory system has important biological significance for soun...
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IPC IPC(8): G01S5/20
CPCG01S5/20
Inventor 杨洋魏洪峰王秀芹杜晓坤刘慧巍杨友林
Owner BOHAI UNIV