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A kind of hrtf measuring method and its measuring equipment based on head-mounted speaker system

A measurement method and technology of measurement equipment, applied in the direction of electrical components, etc., can solve the problems of not being able to accurately reflect the position information of the sound source, and not being able to conform to the HRTF characteristics more realistically, so as to achieve a good stereo sound effect

Active Publication Date: 2021-11-02
HEAD DIRECT KUNSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing HRTF model put into practice is an averaged HRTF model based on sample statistics, especially based on the statistical results of Western samples, which cannot be more realistic in line with the HRTF characteristics of actual listeners, so the reproduction based on it The sound field or the simulated sound field cannot accurately reflect the position information of the sound source in the sound field.

Method used

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  • A kind of hrtf measuring method and its measuring equipment based on head-mounted speaker system
  • A kind of hrtf measuring method and its measuring equipment based on head-mounted speaker system
  • A kind of hrtf measuring method and its measuring equipment based on head-mounted speaker system

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Embodiment 1

[0039] see figure 1 ,in, figure 1 It is a flowchart of an HRTF measurement method based on a head-mounted speaker system according to an embodiment of the present invention.

[0040] This embodiment provides a HRTF measurement method based on a head-mounted speaker system, the measurement method is completed by a measurement device based on a head-mounted speaker system, which includes: Step S110: processing the sound source signal 20 into a test signal according to the preset HRTF31 21; step S120: the test signal 21 is converted into a test sound signal 22 by the head-mounted speaker 110 and played to the listener; step S130: the test sound signal 22 is received by the sound receiving device 120 arranged on the listener's ear, and a measurement is generated signal 23; step S140: process the measurement signal 23 by the processing device 130 to generate a measurement HRTF32; step S150: compare the measurement HRTF32 with the preset HRTF31 to obtain a comparison feature, and c...

Embodiment 2

[0045] This embodiment provides a HRTF measurement method based on a head-mounted speaker system, which also includes a reciprocity verification step, exchanging the positions of the speaker and the radio device in steps S120 and S130, and performing steps S210 to S250, to obtain Reciprocal HRTF to cross-check with the personalized HRTF. Among them, step S210: process the sound source signal 20 into a test signal 21 according to the preset HRTF31; step S220: play the test signal 21 from the speaker to the head-mounted radio device; step S230: set the microphone inside the head-mounted radio device Receive test acoustic signal 22, generate measurement signal 23; Step S240: Process measurement signal 23 by processing device 130, generate measurement HRTF32; Step S250: Compare measurement HRTF32 with preset HRTF31 and obtain comparative feature quantity, and said Compare the feature value with the threshold value, if the feature value is greater than the threshold value, repeat s...

Embodiment 3

[0053] This embodiment provides a HRTF measurement method based on a head-mounted speaker system, which also includes an ear shape measurement step, which uses an optical measurement element arranged inside the head-mounted speaker to obtain the contour of the listener's ear by means of optical mapping image, and output the contour image to the processing device, and the image processing unit of the processing device recognizes the contour image and performs parameterized processing to obtain the ear contour parameters of the listener. Among them, the ear contour parameters may include the area ratio of the earlobe to the auricle, the distance between the two feet of the antihelix crus, the depth and area of ​​the triangular fossa, the thickness of the second chakra, the height and width of the upper and lower edges of the tragus and the antitragus , the length and depth of the concha, the depth of the concha cavity, the height difference and projection overlap ratio between th...

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Abstract

The invention provides an HRTF measuring method based on a head-mounted speaker system and a measuring device thereof, and the measuring method is completed by the measuring device based on the head-mounted speaker system. It includes the following steps in sequence: processing the sound source signal into a test signal according to the preset HRTF; converting the test signal from the head-mounted speaker into a test sound signal and playing it to the listener; receiving the test acoustic signal to generate a measurement signal; processing the measurement signal by a processing device to generate a measurement HRTF; comparing the measurement HRTF with a preset HRTF to obtain a comparison feature, and comparing the comparison feature with the Threshold value comparison, when the compared feature value is less than the threshold value, the personalized HRTF of the listener is obtained. The invention aims at the head-related transfer function difference caused by the difference in the transmission path between the head-mounted speaker and the free-field speaker system, and realizes the measurement of the head-related transfer function when the listener wears the head-mounted speaker system.

Description

technical field [0001] The invention relates to the technical field of audio analysis and processing, in particular to an HRTF measurement method based on a head-mounted speaker system and a measurement device thereof. Background technique [0002] Head-Related Transfer Function (HRTF), also known as ATF (Anatomical Transfer Function), is a sound positioning algorithm that describes the transmission process of sound waves from the sound source to the listener's ears. It reflects the structure of the human body, such as the head The comprehensive filtering results of the sound waves of the head, auricle, torso structure and gender include the location information of the sound source, which is of great significance for the reproduction of stereo sound effects and the simulation of the virtual position information of the sound source. It mainly includes binaural time difference (Interaural Time Difference, ITD) and binaural sound pressure level difference (Interaural Level Diff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00
CPCH04R29/001
Inventor 边仿
Owner HEAD DIRECT KUNSHAN CO LTD
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