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Head position self-calibration and self-positioning system and method for real person HRTF measurement

A self-positioning and self-calibration technology, which is applied in the field of virtual space measurement, can solve the problems of interfering with HRTF acoustic measurement equipment and affecting the accuracy of HRTF data, and achieve the effect of low cost, high precision and high efficiency

Pending Publication Date: 2022-05-13
AIR FORCE MEDICAL CENT PLA
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Problems solved by technology

The above head calibration and positioning methods not only affect the accuracy of HRTF data, but also need to continuously guide the subject to adjust and correct the head position to affect the efficiency of HRTF measurement. At the same time, the guidance, alarm, and prompt sounds will generate noise that affects the accuracy of HRTF data. Positioning such as photoelectric theodolite equipment can also interfere with HRTF acoustic measurement equipment

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  • Head position self-calibration and self-positioning system and method for real person HRTF measurement
  • Head position self-calibration and self-positioning system and method for real person HRTF measurement
  • Head position self-calibration and self-positioning system and method for real person HRTF measurement

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Embodiment Construction

[0058] In order to enable those skilled in the art to better understand the solutions of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0059] Aiming at the head position calibration and positioning problem of human HRTF measurement, the embodiment of the present invention provides a head position self-calibration and self-positioning system and method for human HRTF measurement, using plane markers to calibrate the positions of the center of the human head and the center of the spatial distribution of sound sources , through the imaging system, the out-of-sight markers that the subject cannot observe are converted into visual markers, and the subject can actively visually seek and adjust his head posture to register and register the head center mark and the ball center mark, Then realize the head position self-calibration and self-positioning of human HRTF measure...

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Abstract

The invention discloses a head position self-calibration and self-positioning system for real person HRTF measurement. The system comprises a real person head center calibration module and a module for calibrating the position of the head center in the head; the sound source space distribution sphere center calibration module is used for calibrating the position of a virtual sphere center of sound source space distribution in the space; and the self-calibration and self-positioning module is used for calibrating and positioning the head center on the virtual sphere center by the testee. The invention further discloses a head position self-calibration and self-positioning method for real person HRTF measurement. By means of the scheme, head position self-calibration and self-positioning of real person HRTF measurement can be conveniently and efficiently achieved.

Description

technical field [0001] The invention relates to the technical field of virtual space measurement, in particular to a head position self-calibration and self-positioning system and method for human HRTF measurement. Background technique [0002] The head-related transfer function HRTF (Head Realized Transfer Functions, HRTF) describes the acoustic transmission relationship between the sound source and the ears in the free sound field. It is related to the sound source position, frequency and other parameters, including the sound level difference (Interaural Level Factors such as Interaural Difference (ILD), Interaural Time Difference (ITD), and Phase Difference (Interaural Phase Difference, IPD) are important clues for the auditory localization of the human brain. HRTF describes the propagation process of sound from all directions in space to the binaural ears as two propagation channels on the left and right to construct binaural virtual sound and reproduce spatial three-dim...

Claims

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Application Information

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IPC IPC(8): A61B5/12A61B90/00
CPCA61B5/123A61B90/39A61B2090/3937A61B2090/3941A61B2560/0223
Inventor 师国伟郑学文王兴伟王聪余文斌张岩
Owner AIR FORCE MEDICAL CENT PLA
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