Sensitivity of human subjects to head-related transfer-function phase spectra

1999 ◽  
Vol 105 (5) ◽  
pp. 2821-2840 ◽  
Author(s):  
Abhijit Kulkarni ◽  
S. K. Isabelle ◽  
H. S. Colburn
Keyword(s):  
Transfer Function ◽  
Human Subjects ◽  
Head Related Transfer Function ◽  
Phase Spectra

scholarly journals Measurement of Head-Related Transfer Functions: A Review

2020 ◽  
Vol 10 (14) ◽  
pp. 5014 ◽  
Author(s):  
Song Li ◽  
Jürgen Peissig
Keyword(s):  
Transfer Function ◽  
Transfer Functions ◽  
Human Subjects ◽  
Near Field ◽  
Free Field ◽  
Measurement Systems ◽  
High Measurement ◽  
Head Related Transfer Function ◽  
Acoustic Environments ◽  
Acoustic Transfer Function

A head-related transfer function (HRTF) describes an acoustic transfer function between a point sound source in the free-field and a defined position in the listener’s ear canal, and plays an essential role in creating immersive virtual acoustic environments (VAEs) reproduced over headphones or loudspeakers. HRTFs are highly individual, and depend on directions and distances (near-field HRTFs). However, the measurement of high-density HRTF datasets is usually time-consuming, especially for human subjects. Over the years, various novel measurement setups and methods have been proposed for the fast acquisition of individual HRTFs while maintaining high measurement accuracy. This review paper provides an overview of various HRTF measurement systems and some insights into trends in individual HRTF measurements.

scholarly journals Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane

2020 ◽  
Vol 10 (15) ◽  
pp. 5257
Author(s):  
Nathan Berwick ◽  
Hyunkook Lee
Keyword(s):  
Transfer Function ◽  
Input Signal ◽  
Function Analysis ◽  
Median Plane ◽  
Speech Reception ◽  
Transfer Function Analysis ◽  
Spatial Unmasking ◽  
Head Related Transfer Function ◽  
Speech Reception Thresholds ◽  
Energy Weighting

This study examined whether the spatial unmasking effect operates on speech reception thresholds (SRTs) in the median plane. SRTs were measured using an adaptive staircase procedure, with target speech sentences and speech-shaped noise maskers presented via loudspeakers at −30°, 0°, 30°, 60° and 90°. Results indicated a significant median plane spatial unmasking effect, with the largest SRT gain obtained for the −30° elevation of the masker. Head-related transfer function analysis suggests that the result is associated with the energy weighting of the ear-input signal of the masker at upper-mid frequencies relative to the maskee.

Head-related transfer function database and its analyses

2007 ◽  
Vol 50 (3) ◽  
pp. 267-280 ◽  
Author(s):  
BoSun Xie ◽  
XiaoLi Zhong ◽  
Dan Rao ◽  
ZhiQiang Liang
Keyword(s):  
Transfer Function ◽  
Head Related Transfer Function

Subjective Evaluation of Three Headphone-Based Virtual Sound Source Positioning Methods Including Differential Head-Related Transfer Function

2016 ◽  
Vol 41 (3) ◽  
pp. 437-447
Author(s):  
Dominik Storek ◽  
Frantisek Rund ◽  
Petr Marsalek
Keyword(s):  
Transfer Function ◽  
Sound Source ◽  
Subjective Evaluation ◽  
Sound Localisation ◽  
Signal Features ◽  
Listening Tests ◽  
Positioning Method ◽  
Head Related Transfer Function ◽  
Positioning Algorithm ◽  
Source Positioning

Abstract This paper analyses the performance of Differential Head-Related Transfer Function (DHRTF), an alternative transfer function for headphone-based virtual sound source positioning within a horizontal plane. This experimental one-channel function is used to reduce processing and avoid timbre affection while preserving signal features important for sound localisation. The use of positioning algorithm employing the DHRTF is compared to two other common positioning methods: amplitude panning and HRTF processing. Results of theoretical comparison and quality assessment of the methods by subjective listening tests are presented. The tests focus on distinctive aspects of the positioning methods: spatial impression, timbre affection, and loudness fluctuations. The results show that the DHRTF positioning method is applicable with very promising performance; it avoids perceptible channel coloration that occurs within the HRTF method, and it delivers spatial impression more successfully than the simple amplitude panning method.

scholarly journals A framework for designing head-related transfer function distance metrics that capture localization perception

2021 ◽  
Vol 1 (4) ◽  
pp. 044401
Author(s):  
Ishwarya Ananthabhotla ◽  
Vamsi Krishna Ithapu ◽  
W. Owen Brimijoin
Keyword(s):  
Transfer Function ◽  
Distance Metrics ◽  
Head Related Transfer Function
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