Acoustic Sensing Based on Logarithmic Differential Decomposition (I): AM-FM Feature Extraction Based on Basis Waveforms Decomposition

• Ono Nobutaka

  University of Tokyo

• Abe Mototsugu

  University of Tokyo

• Ando Shigeru

  University of Tokyo

Bibliographic Information

Other Title

• 対数微分分解に基づく音響センシング(I):サブバンドAM-FM変動の基底波形分解に基づく特徴抽出法
• タイスウ ビブン ブンカイ ニ モトヅク オンキョウ センシング 1 サブバンド AM-FM ヘンドウ ノ キテイ ハケイ ブンカイ ニ モトヅク トクチョウ チュウシュツホウ

Abstract

It is well known that the human auditory system has acute sensitivity to AM-FM components of sounds. We are aiming to obtain an appropriate structure and algorithm underlying this, and realize it as an imbedded function of future auditory sensors. In this paper, we introduce a logarithmic differential decomposition of subband signals into basis waveforms, and show 1) AM and FM are expressed as a real part and an imaginary part of these signals, 2) the basis waveform is uniquely characterized by the corresponding zero, 3) the basis waveforms are asymptotically orthogonal each other, and hence, 4)the zeros sequence can be optimally extracted using the matched filtering of the AM-FM components by the basis waveform.

Journal

• IEEJ Transactions on Sensors and Micromachines

  IEEJ Transactions on Sensors and Micromachines 119 (10), 498-505, 1999

  The Institute of Electrical Engineers of Japan

Keywords

• AM-FM
• beat
• zeros
• subband signal

Details

• CRID: 1390001204461551104
• NII Article ID: 10004834369
• NII Book ID: AN1052634X
• DOI: 10.1541/ieejsmas.119.498
• ISSN: 13475525
• ISSN: 13418939
• NDL BIB ID: 4866337
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4866337
• Web Site: http://www.jstage.jst.go.jp/article/ieejsmas1995/119/10/119_10_498/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed