HKUST Library Institutional Repository Banner

HKUST Institutional Repository >
Electronic and Computer Engineering  >
ECE Conference Papers >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/2586
Title: Fast time scale modification using envelope-matching technique (EM-TSM)
Authors: Wong, Wai Chuen
Au, Oscar C.
Wong, Hon Wah
Keywords: Time scaling algorithm
MPEG4
Speech quality
Envelope-matching
Overlap-and-Add
Issue Date: 1998
Citation: Proceedings of the 1998 IEEE International Symposium on Circuits and Systems, ISCAS 98, 31 May-3 June 1998, Monterey, CA, vol. 5, p. 550-553
Abstract: Time scaling of speech and audio signals is one of the key features of the upcoming MPEG4 standard. Synchronized Overlap-and-Add (SOLA) is a time scaling algorithm known to achieve good speech quality. One problem of SOLA is that it requires a large amount of computation in the search of the best matching point between the analysis and synthesis frames. This is especially serious when multiple time scaling factors are to be supported as in the case of MPEG4. In this paper, we propose a technique called envelop-matching to simplify the computation with effectively the same quality. In envelop-matching, zero crossing locations are used as features for the search. We propose a very fast algorithm for the distortion computation.
Rights: © 1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
URI: http://hdl.handle.net/1783.1/2586
Appears in Collections:ECE Conference Papers

Files in This Item:

File Description SizeFormat
fast_t.pdfpre-published version796KbAdobe PDFView/Open

All items in this Repository are protected by copyright, with all rights reserved.