Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
2003-11-14
2009-08-25
Flanders, Andrew C (Department: 2614)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
Reexamination Certificate
active
07580761
ABSTRACT:
A time-domain time-scale modification method based on the synchronous overlap-and-add method consists of a generalization of the envelope-matching time-scale modification method. The cross-correlation function employs a fixed-size cross-correlation buffer to eliminate the need for normalization inside the search loop. This fixed-size cross-correlation buffer is the center of the overlap region corresponding to the case where the fine overlap adjustment value is set to zero. The computational cost of this invention is lower than any other method with a comparable quality.
REFERENCES:
patent: 2004/0122662 (2004-06-01), Crockett
Time-Scale Modification of Speed Signals Using Cross-Correlation Functions; Ryoji Suzuki and Masayuki Misaki; IEEE Transactions on Consumer Electronics, vol. 38, No. 3, Aug. 1992.
Justy W.C. Wong, et al.;Fast Time Scale Modification Using Envelope-Matching Technique(Em-TSM); Proc. of 1998 IEEE Int'l Symp. On Circuits & Systems (ISCAS), Monterey, CA, Jun. 1998, vol. 5, pp. 550-553.
Salim Roucos, et al.;High Quality Time-Scale Modification for Speech, Proc. ICASSP 1985, pp. 493-496.
Iwata Yoshihide
Sakurai Atsuhiro
Brady III Wade J.
Flanders Andrew C
Marshall, Jr. Robert D.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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