Audio Time-Scale Modification Using a Hybrid Time-Frequency Domain Approach

Dorran, David and Coyle, Eugene and Lawlor, Robert (2005) Audio Time-Scale Modification Using a Hybrid Time-Frequency Domain Approach. In: UNSPECIFIED.

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Frequency-domain approaches to audio time-scale modification introduce a reverberant artifact into the time-scaled output due to a loss in phase coherence between subband components. WHilst techniques have been developed which reduce the presence of this artifact, it remains a source of difficulty. A method of time-scaling is presented that reduces the presence of reverberation by taking advantage of some flexibility that exists in the choice of phase required so as to maintain horizontal phase coherence along frequency-domain subband components. The approach makes use of appearling aspects of existing time-domain and requency-domain time-scaling techniques.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Copyright © 2005 IEEE.   Reprinted from  (relevant publication info). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of NUI Maynooth ePrints and eTheses Archive's products or services.  Internal or personal use of this material is permitted.  However, permission for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to copyright laws protecting it.
Keywords: Hybrid Time-Frequency Domain, subband components, reverberation, phase coherence
Academic Unit: Faculty of Science and Engineering > Electronic Engineering
Item ID: 652
Depositing User: Robert Lawlor
Date Deposited: 09 Aug 2007
Publisher: Institute of Electrical and Electronics Engineers
Refereed: Yes

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