このエントリーをはてなブックマークに追加
ID 39146
file
title alternative
Music Instruments That Produce Sounds with Inaudible High-Frequency Components <Research Material>
creator
Kuribayashi, Ryuma
subject
inaudible high-frequency sounds
musical instruments
analog/digital conversion
NDC
Music
abstract
Many kinds of audio-visual information from daily life have been digitized. Digitization accuracy is important to perceptions or evaluations of audio naturalness, and to listener comfort during the listening experience. High-resolution digital sound sources with inaudible high-frequency components (>20 kHz) have become available, owing to recent advances in information and communications technology. However, the effects of sounds that feature such components on human psychophysiological processes have not been sufficiently discussed. One of the reasons for this dearth of research could be that it remains unclear what musical instruments produce sounds with such components. In this technical note, we introduce some percussion instruments that produce sounds with inaudible high-frequency components, and present sound spectra and spectrograms of those sounds. High-frequency components in excess of 20 kHz appeared, in abundance, in the rising phase—but not in the falling phase—of a sound wave. In a sound wave of a tambourine, high-frequency components appeared not only in the rising phase but also in the falling phase. The tambourine sound could be a feasible study subject, given how it features abundant inaudible high-frequency components; it could be used to examine the effects of sounds that feature them on human psychophysiological processes.
description
本稿は,JSPS科研費(15J06118)の助成を受けた研究の一環である。
journal title
Bulletin of the Graduate School of Integrated Arts and Sciences, Hiroshima University. I, Studies in human sciences
volume
Volume 10
start page
35
end page
41
date of issued
2015-12-31
publisher
広島大学大学院総合科学研究科
issn
1881-7688
ncid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2015 by Graduate School of Integrated Arts and Sciences, Hiroshima University All rights reserved
department
Graduate School of Integrated Arts and Sciences
他の一覧