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Measurement system and measurement method for head-related transfer function in common environment

A technology of head-related transmission and general environment, applied in the direction of two-channel system, stereo system, electrical components, etc., can solve the problems of complex equipment, high test environment requirements, and large manpower consumption, so as to improve the test speed and have universal application The effect of avoiding delay error

Active Publication Date: 2011-01-05
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problem of how to quickly obtain the head-related transfer function of the listener in an ordinary environment, and its head shape parameters and motion parameters, and overcome the high requirements of the test environment, complex equipment, long test time, and labor-intensive testing methods of ordinary measurement methods. Therefore, based on the joint processing method of speaker array and binaural microphone array, a measurement system and measurement method of head-related transfer function in common environment are provided.

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  • Measurement system and measurement method for head-related transfer function in common environment
  • Measurement system and measurement method for head-related transfer function in common environment
  • Measurement system and measurement method for head-related transfer function in common environment

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Embodiment 1

[0039] like figure 1 As shown, the measurement system of the present invention includes a dual loudspeaker array 101, a head-mounted microphone 102, and four input and output channels 103, 104 and 105 of an acoustic signal AD / DA conversion device, where the AD / DA conversion device adopts What is used is the multi-channel analyzer of the BK company's pulse3560c model, and what the data processing, storage and display device 106 utilizes is a common personal computer. The double loudspeaker array 101 is used to play the test signal. In this embodiment, the test signal fed to the left and right speakers is two white noise signals, one is the MLS sequence, and the other is the reverse sequence of the sequence. Therefore, the two The road signals are independent of each other. In this example, the sampling frequency of the test signal is 65536Hz, the sequence length of one cycle is 32767 points, and the repetition of five cycles is adopted. The two-channel signal is fed by the PC ...

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Abstract

The invention relates to a measurement system and a measurement method for a head-related transfer function in a common environment. The measurement system comprises a loudspeaker array consisting of two or more horizontal loudspeakers; a microphone is a double-ear microphone array and is arranged in the sound wave emitting direction of the loudspeaker array; test signals are processed by a soundsignal DC conversion device and a power amplifier and then fed to the loudspeaker array and played by each loudspeaker, and the test signals of each path are irrelevant; the double-ear microphone array picks the sound signals, and the sound signals are output to a data processing terminal through a sound signal AD conversion device; and the data processing terminal calculates a cross correlation function between the signals played by each loudspeaker and the signals picked by the microphone by using a correlation analysis method, and the cross correlation function is processed to obtain the head-related transfer function (HRTF) from each loudspeaker to the left and right ears of a human head. The head-related transfer function, head type parameters and posture parameters of a listener arequickly acquired by combined processing of the loudspeaker array and the double-ear microphone array.

Description

technical field [0001] The present invention relates to the technical field of acoustic signal processing. More specifically, the present invention relates to a measurement system and method for head-related transfer functions in ordinary environments, which can quickly measure and obtain the listener's personalized head-related transfer functions and Its head shape parameters and pose parameters. Background technique [0002] In recent years, Head-Related Transfer Function (Head-Related Transfer Function, referred to as HRTF) and its virtual auditory technology have been widely used in scientific experiments related to auditory psychology and physiology, multimedia and virtual reality, artificial intelligence, communication, indoor acoustic design, sound program production, It has important application value in scientific research, engineering technology, and consumer electronics fields such as home sound reproduction. Virtual hearing technology is a technology that simula...

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Application Information

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IPC IPC(8): H04S1/00H04S7/00H04R29/00
Inventor 董秋洁叶青华章艳陈佳路李晓东
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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