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Parameterized detection method for auditory spatial localization capacity and method for minimum audible angle

A space positioning and detection system technology, applied in the direction of audiometer, stereo system, diagnostic recording/measurement, etc., to achieve the effect of improving accuracy, realizing precise control, and improving safety factor

Active Publication Date: 2019-07-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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However, there is no relevant research on this detection system

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  • Parameterized detection method for auditory spatial localization capacity and method for minimum audible angle
  • Parameterized detection method for auditory spatial localization capacity and method for minimum audible angle
  • Parameterized detection method for auditory spatial localization capacity and method for minimum audible angle

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Experimental program
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Embodiment 1

[0042] A parametric detection system for auditory spatial localization ability, see figure 1 and figure 2 , the parameterized detection system includes: host computer system 1, space motion system 2, real-time three-dimensional display system 3, audio system 4 and patient objective evaluation system 5, wherein,

[0043] The upper computer system 1 calculates the spatial motion data according to the spatial coordinate conversion algorithm based on the nonlinear least squares algorithm and communicates with the lower computer (the driver and controller of the servo motor); the spatial motion system 2 passes the circumferential motion, radial motion and Vertical movement realizes precise control of any position in space;

[0044] The real-time 3D display system 3 is built into the upper computer system 1, based on virtual reality technology, the 3D model is reconstructed in real time through the system image, and the real-time motion data of the system is fed back; the audio sy...

Embodiment 2

[0053] Below in conjunction with specific operation steps, the scheme in embodiment 1 is further introduced, see the following description for details:

[0054] 101: Classify the spatial positions with the highest correct rate and the lowest correct rate according to the test results of the subject's spatial positioning ability;

[0055] 102: Select a spatial point in the spatial positions of the highest correct rate and the lowest correct rate as the starting point of the sound source;

[0056] 103: Reduce the spatial distance between sound sources proportionally between the edge point and the starting point of the area—including: changes in horizontal angle, vertical angle, and distance from the center of the sphere;

[0057] In specific implementation, the line connecting the starting point and the center of the sphere is used as the axis, and the area with an angle of 10° with the axis and intersecting the sphere in the space is the range of the candidate area.

[0058] 1...

Embodiment 3

[0062] 201: The operator inputs the subject's physiological parameters and test times into the interactive interface of the industrial computer, and the industrial computer randomly generates a sequence of spatial point coordinates and caches them in the data list;

[0063] 202: The industrial computer converts the coordinates in the data list into the number of circumferential motion pulses, the number of radial motion pulses and the number of vertical motion pulses according to the spatial center point of the subject’s ears as the current coordinate origin, and converts these data Temporarily store in the data stack according to the time tag;

[0064] 203: The data frame in the data stack is transmitted to the servo motor driver through the data cable according to the "first in first out" principle and according to the RS-485 communication protocol;

[0065] 204: The data will be sent to the servo motor driver with the corresponding address number in the order of circumferen...

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Abstract

The invention discloses a parameterized detection method for the auditory spatial localization capacity and a method for the minimum audible angle. The system comprises an upper computer system, a spatial motion system, a real-time three-dimensional display system, an audio system and a detection system, wherein the upper computer system calculates spatial motion data and communicates with a lowercomputer; the spatial motion system controls any positions in space through circumferential motion, radial motion and vertical motion; the real-time three-dimensional display system is arranged in the upper computer system; the audio system generates a sound source audio data type and a sound source with equidifferent decibels at random; the detection system is used for detecting human spatial data, making the human spatial data matched with the spatial data of the sound system and making an objective evaluation. The method comprises the steps that the control modes of servo motor drivers used for the circumferential motion, the radial motion and the vertical motion respectively are adjusted into speed control modes, so that the motion time between every two sound source points is equal.The distances between the sound source points are constantly changed until a testee cannot accurately recognize the spatial positions of the sound source points, detection is stopped, and at this moment, the spatial angle between the two sound source points is the minimum audible angle of the testee. The control precision is improved.

Description

technical field [0001] The invention relates to the field of auditory space positioning, in particular to a parametric detection system for auditory space positioning capability, which relates to human auditory space discrimination capability of three-dimensional spatial sound sources. Background technique [0002] Hearing is one of the most important functions of the human ear to judge the direction of the sound source. Human's single ear and both ears have positioning ability. Monaural positioning is the auditory effect caused by the reflection of incident sound waves by various parts of the auricle, which is called the auricle effect. Binaural localization relies on two clues to localize sound: the difference in the time the sound reaches both ears—the time difference between the ears, and the difference in the intensity of the sound reaching the two ears. Single-ear positioning is mainly in the vertical direction, while binaural positioning is mainly in the horizontal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/12
CPCA61B5/123A61B5/12H04S7/304H04S2400/11
Inventor 倪广健许淄豪明东刘宝禄张海裕郑琪庞嘉
Owner TIANJIN UNIV