Interaural time difference individualization in HRTF by scaling through anthropometric parameters

EURASIP Journal on Audio, Speech, and Music Processing

Javier M. Mora-Merchan¹  Diego F. Larios¹  Pablo Gutierrez-Parera²  Jose J. Lopez² 

[1] Department of Electronic Technology, Escuela Politécnica Superior, Universidad de Sevilla;Institute of Telecommunications and Multimedia Applications, Universitat Politècnica de València;

关键词: HRTF;    ITD;    Spatial sound;    Individualization;    Anthropometric parameters;    Perceptual test;   

DOI  :  10.1186/s13636-022-00241-y

来源: DOAJ

【 摘 要 】

Abstract Head-related transfer function (HRTF) individualization can improve the perception of binaural sound. The interaural time difference (ITD) of the HRTF is a relevant cue for sound localization, especially in azimuth. Therefore, individualization of the ITD is likely to result in better sound spatial localization. A study of ITD has been conducted from a perceptual point of view using data from individual HRTF measurements and subjective perceptual tests. Two anthropometric dimensions have been demonstrated in relation to the ITD, predicting the subjective behavior of various subjects in a perceptual test. With this information, a method is proposed to individualize the ITD of a generic HRTF set by adapting it with a scale factor, which is obtained by a linear regression formula dependent on the two previous anthropometric dimensions. The method has been validated with both objective measures and another perceptual test. In addition, practical regression formula coefficients are provided for fitting the ITD of the generic HRTFs of the widely used Brüel & Kjær 4100 and Neumann KU100 binaural dummy heads.

【 授权许可】

Unknown