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A new time-scale expansion algorithm based on a frequency-scale modification approach combined with time interpolation is presented. The algorithm is noniterative and is constrained to a blind modification of the magnitudes and phases of the relevant spectral components of the signal, on a frame-by-frame basis. The resulting advantages and limitations are discussed. A few simplified models for signal analysis/synthesis are developed, the most critical of which concern phase and frequency estimation beyond the frequency resolution of the filterbank. The structure of the algorithm is described and its performance is illustrated with both synthetic and natural audio signals
Published in:
Speech and Audio Processing, IEEE Transactions on
(Volume:7
,
Issue:
4
)
Date of Publication: Jul 1999
- Page(s):
- 441 - 453
- ISSN :
- 1063-6676
- INSPEC Accession Number:
- 6299371
- Digital Object Identifier :
- 10.1109/89.771312
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Jul 1999
- Sponsored by :
- IEEE Signal Processing Society
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