Frequency-domain approaches to audio time-scale modification introduce a reverberant or phasy artifact into the time-scaled output. Such artifacts are generally not present within time-domain implementations. However, high-quality time scaling in the time domain is typically limited to quasi-periodic signals such as speech. A hybrid method of time scaling is presented, which draws upon appealing aspects of both time-domain and frequency-domain implementations. The technique described can be applied successfully to a wide range of audio and is both robust and efficient. Subjective testing demonstrates that the technique reduces the presence of phasiness significantly.

Authors: Dorran, David; Lawlor, Robert; Coyle, Eugene
Affiliations: Dublin Institute of Technology, Dublin, Ireland; National University of Ireland, Maynooth, Ireland(See document for exact affiliation information.)
JAES Volume 54 Issue 1/2 pp. 21-31; February 2006
Publication Date: January 15, 2006

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