A Method for Indoor Sound Source Localization Based on Sound Location Fingerprint
A sound source localization and sound technology, applied in positioning, measuring devices, instruments, etc., can solve problems such as inability to realize indoor sound source localization and the inability to determine the specific location of the sound source
Active Publication Date: 2017-12-08
HEBEI UNIV OF TECH
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method for indoor sound source localization based on the sound position fingerprint, and use a positioning algorithm to compare the proximity of the sound source signal of the measuring point to be located and each reference point in the sound position fingerprint database, thereby Realize the determination of the position coordinates of the sound source to be measured, overcome the defects that the existing sound orientation method can only determine the direction of the sound source, but cannot determine the specific position of the sound source, and cannot realize the positioning of the indoor sound source
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[0060] A kind of indoor sound source localization method based on sound position fingerprint of this embodiment, specific steps are as follows:
[0061] A. the special measuring device of the inventive method:
[0062] Comprise four microphones, sound signal microprocessor 1 and upper computer 2, wherein, described four microphones are totally four microphones of microphone 0a, microphone 1b, microphone 2c and microphone 3d installed on four brackets respectively, wherein microphone 0a is a reference microphone, and the sound source signal microprocessor 1 is composed of a sound signal amplification module 1-2 and a data acquisition module 1-1, and the upper computer 2 is a PC driven by NIDAQ, and the upper computer 2 There are signal acquisition programs and matching algorithm programs in it; between the four microphones and the sound signal amplification module 1-2, between the sound signal amplification module 1-2 and the data acquisition module 1-1 are all connected by wir...
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The invention discloses an indoor sound source localization method based on sound position fingerprints, and relates to the technology in which sound waves are employed to determine the position of a signal source. The method comprises operation steps of off-line sampling and on-line locating. During an off-line sampling process, a database, namely a sound position fingerprint database, containing relations between sodar time differences and sound sampling point position coordinates is constructed. During an on-line positioning process, the coordinate position of a sound source to be located is determined. By employing the method, the proximity between the sound source signal of the point to be located and each reference point in the sound position fingerprint database is compared through a location algorithm, so that the position coordinate of the sound source point to be detected is determined, and shortcomings in the prior art that only the direction of the sound source can be determined but the specific position of the sound source cannot be determined, and the indoor sound source cannot be located through a conventional sound orientation method are overcome.
Description
technical field [0001] The technical scheme of the present invention relates to the technology of determining the location of a signal source by using sound waves, in particular, a method for locating an indoor sound source based on sound location fingerprints. Background technique [0002] Nowadays, with the development of bionic technology, the field of application of auditory perception technology based on microphone array is constantly expanding, and it has become an important research topic in many research fields such as robot navigation, speech enhancement and target positioning. It can be said that the auditory perception technology of a new generation of intelligent robots will be one of the important symbols of its development level and an important means to realize the robot's biochemical defense. Therefore, designing a high-precision sound source localization device has important application value in many fields such as medical treatment, search and rescue, smart...
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IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 孙昊王月英杨鹏王硕朋齐立萍
Owner HEBEI UNIV OF TECH