Detection and Suppression of Reverberation in Measured Head-Related Impulse Responses Based on Spatio-Temporal Frequency Analysis

Yasuko MORIMOTO  Takanori NISHINO  Kazuya TAKEDA 

Publication
A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)  Vol.J95-A  No.7  pp.555-562
Publication Date: 2012/07/01
Online ISSN: 1881-0195
Print ISSN: 0913-5707
Type of Manuscript: Special Section PAPER (Special Issue on Emerging Technologies in Electronics, Information and Communication)
Category: 
Keyword: 
head-related impulse response,  head-related transfer function,  spatio-temporal frequency,  reverberation,  diffusive noise, 

Full Text(in Japanese): PDF(812.6KB)

Summary: 
Measuring a head-related impulse response (HRIR) that is used in many spatial audio applications is affected by a reverberation and background noise. Therefore, these obstructive factors must be detected and removed from measured HRIRs. In this paper, we applied spatio-temporal frequency analysis to binaural impulse responses. From results, the spatio-temporal spectrum of HRIRs concentrated in the specific triangle region and the spatio-temporal spectrum of other factors appeared outside of HRIR's region. We also proposed the method of suppressing a reverberation using spatio-temporal frequency analysis and evaluated. From results, the proposed method can suppress a reverberation.