Title:
音声相関構造に基づくブラインド伝送路推定方法および装置
Document Type and Number:
Japanese Patent JP2005521091
Kind Code:
A
Abstract:
Methods and apparatus for blind channel estimation of a speech signal corrupted by a communication channel are provided. One method includes converting a noisy speech signal into either a cepstral representation or a log-spectral representation; estimating a correlation of the representation of the noisy speech signal; determining an average of the noisy speech signal; constructing and solving, subject to a minimization constraint, a system of linear equations utilizing a correlation structure of a clean speech training signal, the correlation of the representation of the noisy speech signal, and the average of the noisy speech signal; and selecting a sign of the solution of the system of linear equations to estimate an average clean speech signal in a processing window.
Inventors:
UNES Suirumi
Patrick Nguyen
Luca Rigazio
Jean-Claude Junca
Patrick Nguyen
Luca Rigazio
Jean-Claude Junca
Application Number:
JP2003577245A
Publication Date:
July 14, 2005
Filing Date:
March 14, 2003
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G10L15/20; G10L15/00; G10L15/02; G10L21/02; (IPC1-7): G10L15/20; G10L15/00; G10L21/02
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori