In order to explore the perceptual mechanism of Interaural Level Difference (ILD) and research the relationship of ILD limen to frequency and ILD, this article selected eight values of ILD according to the qualitative analysis of ILD sensitivity by human ear. It was divided into 24 frequency bands as critical band and selected the center frequency of each band to test. This experiment adopted the traditional test methods (1 up/2 down and 2AFC). The results showed that: the thresholds of ILD are more significant with frequency, they are smaller at 500 Hz and 4000 Hz, a maximum value especially when it reaches about 1000 Hz; the thresholds increase as the reference values of ILD increase. This work will provide basic data for comprehensive exploring perceptual characteristics of the human ear and theoretical support for audio efficient compression.

Authors: Wang, Heng; Zhang, Cong; Wu, Yafei
Affiliations: Wuhan Polytechnic University, Wuhan, Hubei, China; Wuhan University, Wuhan, Hubei, China(See document for exact affiliation information.)
AES Convention: 140 (May 2016) Paper Number: 9511
Publication Date: May 26, 2016
Subject: Audio Equipment, Audio Formats, and Audio Signal Processing

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