Time-domain time/pitch scaling of speech or audio signals with t

Details Time-domain time/pitch scaling of speech or audio signals with t Time-domain time/pitch scaling of speech or audio signals with t

1996-11-07

2000-04-11

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704503, G10L 302, G10L 900

Patent

active

060497661

ABSTRACT:
Method and apparatus for time-scaling and/or pitch shifting by discarding and/or repeating segments of a signal. The signal is stored as a series of samples in a memory where it is readable by one or more read pointers. Periodicity of segments of the signal is determined by evaluating normalized cross-correlation over a range of possible periods. Transients are detected by monitoring changes in rms signal value. To achieve time compression or time stretching, a segment is skipped/discarded whenever a maximum time-discrepancy between the current output and an ideal output is reached or a high periodicity is detected, a jump of the optimal length would not make this time discrepancy too high, and no transient is present in the segment to be skipped/discarded.

REFERENCES:
patent: 3816664 (1974-06-01), Koch
patent: 4464784 (1984-08-01), Agnello
patent: 4700391 (1987-10-01), Leslie, Jr. et al.
patent: 5630013 (1997-05-01), Suzuki et al.

Affiliated with

Also associated with

Rating

Time-domain time/pitch scaling of speech or audio signals with t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Time-domain time/pitch scaling of speech or audio signals with t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-domain time/pitch scaling of speech or audio signals with t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1183966