Sparse modeling of musical instruments sounds in time-frequency domain

Hiromu Ogi, Kohei Yatabe, Yasuhiro Oikawa, Yusuke Miyagi, Koji Oishi

研究成果: Conference contribution

抄録

Sample-based synthesis is one of the most common synthesis methods of the digital synthesizer. It can synthesize musical instrument sounds well because it plays recorded sounds instead of generating sounds such as additive and frequency modulation syntheses. The recorded sounds are usually stored in the time domain. If the recorded sounds are stored in the time-frequency domain, sound processing can be simplified. Users can process audio signals intuitively by operating the time-frequency bins of the spectrograms. However, the representation of sounds in the time-frequency domain usually requires more memory than that in the time domain. In synthesizers, if much data is needed, hardware costs are increased correspondingly. Therefore, a technique to reduce the amount of data is required. In this paper, to reduce the amount of data, we introduce a sparse modeling technique for musical instrument sounds in the time-frequency domain. We propose an optimization algorithm of sparse modeling with four shrinkage operators. Numerical experiments show that the data quantity of the signals reduced by over 95 percent by using the technique.

本文言語English
ホスト出版物のタイトルProceedings of the 23rd International Congress on Acoustics
ホスト出版物のサブタイトルIntegrating 4th EAA Euroregio 2019
編集者Martin Ochmann, Vorlander Michael, Janina Fels
出版社International Commission for Acoustics (ICA)
ページ6467-6474
ページ数8
ISBN(電子版)9783939296157
DOI
出版ステータスPublished - 2019
イベント23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
継続期間: 2019 9 92019 9 23

出版物シリーズ

名前Proceedings of the International Congress on Acoustics
2019-September
ISSN(印刷版)2226-7808
ISSN(電子版)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
国/地域Germany
CityAachen
Period19/9/919/9/23

ASJC Scopus subject areas

  • 機械工学
  • 音響学および超音波学

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