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Novel positioning method for sound source orientation

A sound source orientation and positioning method technology, applied in the field of sound source orientation and sound source orientation estimation, can solve the problem of low accuracy of sound source orientation and positioning, achieve enhanced timeliness and accuracy, high positioning accuracy, and low computational load Effect

Inactive Publication Date: 2018-10-19
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0005] In order to solve the problem of low positioning accuracy of the traditional straight triangular pyramid-based sound source azimuth, the present invention provides a new sound source azimuth positioning method, which applies the sound source azimuth estimation algorithm to sound source azimuth positioning, and establishes a microphone array to Simulate the existence of sound sources in the space for positioning research to improve the level of sound source positioning

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  • Novel positioning method for sound source orientation
  • Novel positioning method for sound source orientation
  • Novel positioning method for sound source orientation

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0019] A novel sound source azimuth positioning method of the present invention establishes a four-element microphone array, utilizes a sound source azimuth estimation algorithm, performs sound source azimuth data inversion on the basis of forward modeling data, and performs sound source azimuth positioning.

[0020] The present invention constructs as figure 1 The four-element microphone array shown, inverts the position of the sound source. The propagation speed of the sound source is c, and the center of the four-element microphone array is the coordinate origin (0,0,0), and the distance from each microphone to the coordinate origin is (The value of d is determined according to the actual construction of the four-element microphone array), and the coordinates of the four microphones A, B, C, and D are respectively Assume that the spatial c...

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Abstract

The invention discloses a novel positioning method for a sound source orientation. On the basis of a sound source orientation estimation algorithm, positioning of a sound source orientation is carriedout; a four-element microphone array is established and the sound source orientation estimation algorithm is introduced into an array model; and sound source orientation data inversion is performed based on the forward data. The simulation results show that the novel algorithm has advantages of high positioning precision and low error rate; compared with the traditional straight triangular pyramid type sound source orientation positioning algorithm, the novel positioning method enables the horizontal deflection angle and elevation error to be reduced by about 10% and 1% respectively; and theeffect is good.

Description

technical field [0001] The invention relates to a method for estimating sound source azimuth, in particular to a novel method for locating sound source azimuth, which belongs to the field of sound source locating. Background technique [0002] Sound source orientation refers to the determination of the position and angle data of the sound source in the space. The sound source orientation estimation algorithm is a set of positioning equations about the position of the sound source obtained according to the time delay estimated value, and the positioning equations are nonlinear equations. The sound source localization technology is a method of collecting and processing the sound signal of the sound source, and then determining the direction and distance of the received signal relative to the receiving sensor according to the relevant algorithm, and finally obtaining the three-dimensional position of the received sound source. The passive sound positioning technology has a bro...

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Application Information

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IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 行鸿彦杨旭
Owner NANJING UNIV OF INFORMATION SCI & TECH
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