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ID 39146
本文ファイル
別タイトル
Music Instruments That Produce Sounds with Inaudible High-Frequency Components <Research Material>
著者
栗林 龍馬
キーワード
inaudible high-frequency sounds
musical instruments
analog/digital conversion
NDC
音楽
抄録(英)
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.
内容記述
本稿は,JSPS科研費(15J06118)の助成を受けた研究の一環である。
掲載誌名
広島大学大学院総合科学研究科紀要. I, 人間科学研究
10巻
開始ページ
35
終了ページ
41
出版年月日
2015-12-31
出版者
広島大学大学院総合科学研究科
ISSN
1881-7688
NCID
言語
日本語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2015 by Graduate School of Integrated Arts and Sciences, Hiroshima University All rights reserved
部局名
総合科学研究科
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