Method and apparatus to compensate for fundamental frequency...

Details Method and apparatus to compensate for fundamental frequency... Method and apparatus to compensate for fundamental frequency...

2007-09-25

2007-09-25

Hudspeth, David (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

10601365

ABSTRACT:
A method, computer program product, and data processing system for compensating for fundamental frequency changes in a frame-based speech processing system is disclosed. In a preferred embodiment of the present invention, a frame of a voiced speech signal is processed by an inverse linear-predictive filter to obtain a residual signal that is indicative of the fundamental tone emitted by the speaker's vocal cords. A transformation function is applied to the frame to limit the frame to an integer number of pitch cycles. This transformed frame is used in conjunction with vocal tract parameters obtained from the original speech signal frame to construct a pitch-adjusted speech signal that can more easily be understood by speech- or speaker recognition software.

REFERENCES:
patent: 4941178 (1990-07-01), Chuang
patent: 5651090 (1997-07-01), Moriya et al.
patent: 5787398 (1998-07-01), Lowry
patent: 5839098 (1998-11-01), Laroia et al.
patent: 6125344 (2000-09-01), Kang et al.
J.D. Markel et al., Linear Prediction Speech 1976, Springer-Verlag Berlin Heidelberg New York 1976, p. 10.
Barnwell III et al., Speech Coding 1996, Jon Wiley & Sons, Inc., pp. 90-91.
Quatieri et al., Shape Invariant Time-Scale and Pitch Modification of Speech Mar. 1992, IEEE, pp. 497-510.
Ansari et al., Pitch Modification of Speech Using a Low-Sensitivity Inverse Filter Approach Mar. 1998, IEEE, pp. 60-62.
Spanias, “Speech Coding: A Tutorial Review”, Proceedings of the IEEE, vol. 82, No. 10, Oct. 1994, pp. 1539-1582.
Chu et al., “Iterative Deepening Dynamic Time Warping for Time Series”, 2nd SIAM Int. Conf. On Data Mining (SDM-02), 2002, pp. 1-18.

Affiliated with

Also associated with

Rating

Method and apparatus to compensate for fundamental frequency... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus to compensate for fundamental frequency..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus to compensate for fundamental frequency... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3721860