Feature extraction method for a speech signal

Details Feature extraction method for a speech signal Feature extraction method for a speech signal

1996-01-11

1998-03-24

Tung, Kee M.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704201, 704226, G01L 302

Patent

active

057323887

ABSTRACT:
The invention expands a feature extraction unit of a type known in the art with an adaptive channel compensation. The filter coefficients for a high-pass filter for eliminating the chronologically sliding average are set time-dependently with the adaptive channel compensation. As a result, a faster channel adaptation, and a better error compensation in the speech feature extraction are achieved, leading to a more reliable speech recognition. The parameters for the individual function blocks of the feature extraction unit are determined and stored in advance for specific speech transmission channels such as in mobile radio telephone, ISDN and analog speech transmission. The speech recognition with the assistance of the feature extraction unit can subsequently then ensue in channel-associated fashion with the stored parameters values.

REFERENCES:
patent: 4032710 (1977-06-01), Martin et al.
patent: 4720802 (1988-01-01), Damoulakis et al.
patent: 4866777 (1989-09-01), Mulla et al.
"Speaker Independent Continuous HMM-Based Recognition of Isolated Words On a Real-Time Multi-DSP System," Aktas et al. Proc. Eurospeech 91, 1991, pp. 1345-1348.
"Online Channel Compensation For Robust Speech Recognition," Wittmann et al., Proc. Eurospeech 1993, pp. 1251-1254.
"Optimal Estimators For Spectral Restoration of Noisy Speech," Porter et al., CASSP '84, San Diego, California 1984, pp. 18A.21-18A.2.4.
"Towards Handling The Acoustic Environment in Spoken Language Processing," Hermansky et al. Proc. ICSLP 92, pp. 85-88.
"Noise Reduction for Speech Communication Systems," Kroschel, Frequenz, vol. 42 (1988), No. 2/3, pp. 79-84.
"A Spectral Subtraction Algorithm for Suppression of Acoustic Noise in Speech," Boll, Proc. IEEE-ICASSP, 1979, pp. 200-203.

Affiliated with

Also associated with

Rating

Feature extraction method for a speech signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feature extraction method for a speech signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feature extraction method for a speech signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2298908