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Convention Paper

Study on Objective Evaluation Technique for Small Differences of Sound Quality

Authors: Fukuda, Yuki; Ueyama, Kenta; Ishimitsu, Shunsuke; Higashi, Ryoji; Yumoto, Seiji; Numanou, Takashi

AES Convention 143 · Paper 9817 · October 2017

Abstract

In recent years, some results on different auditory impressions from differences of materials and media have been discussed. To check the causes of these differences, we analyzed the differences in the sound pressure levels and interaural time difference [1] between three different Compact Discs by using wavelet analysis. The results of these analyses detected objective differences in sound despite different materials having the same data, and the new Compact Disc called the “Ultimate Hi Quality Compact Disc” made of photopolymer, where a special alloy has been employed as a reflection film, reproduces more of the master sound than the conventional Compact Disc. We show the method for analyzing sound and evaluate these differences and consider their application on various sound quality evaluations.

Details

Published in
AES Convention 143
AES Convention
143
Paper number
9817
Publication date
October 6, 2017
Session subject
Perception
Affiliation
Hiroshima City University, Hiroshima-shi, Japan; Hiroshima City University, Hiroshima, Japan; Memory-Tech Corporation, Tokyo, Japan (See document for exact affiliation information.)
Type
Convention Paper