Title:
【発明の名称】音声信号の過渡現象を解析するための信号処理方法
Document Type and Number:
Japanese Patent JP2002507776
Kind Code:
A
Abstract:
An input signal (i(t)) having an input frequency-bandwidth is decomposed into a first plurality of signals each representing a distinct, frequency-bandwidth limited portion of the input signal, and for each of the first plurality of signals a signal representing an envelope thereof is provided. The method further comprises, for each signal representing an envelope, providing a second plurality of signals (Oij(t)) each representing a distinct frequency bandwidth-limited portion of the signal representing an envelope. The envelope is preferably provided through rectification and low-pass filtering. The method is useful for analysing a human speech signal for identifying vowels in the speech signal, and for analysing a signal generated by an industrial product.
Inventors:
Leonhard, Frank, Urdal
Application Number:
JP2000537203A
Publication Date:
March 12, 2002
Filing Date:
March 12, 1999
Export Citation:
Assignee:
Leonhard, Frank, Urdal
International Classes:
G10L15/02; G10L25/48; A61B5/0476; G10L19/02; (IPC1-7): G10L11/00; A61B5/0476; G10L15/02
Attorney, Agent or Firm:
Shintaro Nogawa