Time-stretching using the instantaneous frequency distribution and partial tracking


Lazzarini, Victor and Timoney, Joseph and Lysaght, Thomas (2005) Time-stretching using the instantaneous frequency distribution and partial tracking. In: International Computer Music Conference (ICMC) 2005, September 5-9 2005, Barcelona, Spain.

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Abstract

This article presents a method of signal timescale modification using spectral analysis-resynthesis. It discusses an alternative technique for instantaneous frequency estimation, the Instantaneous Frequency Distribution (IFD). The partial tracking analysis employed in this process is explained in some detail, followed by a look into the resynthesis method. The article discusses this technique of time-stretching in comparison to the standard phase vocoder process. Performance details and specific aspects of this implementation are examined, including the C++ code for a time-stretching application.

Item Type: Conference or Workshop Item (Paper)
Keywords: timescale modification; time-frequency analysis; instantaneous frequency; sinusoidal analysis;
Academic Unit: Faculty of Arts,Celtic Studies and Philosophy > Music
Faculty of Science and Engineering > Computer Science
Item ID: 4178
Depositing User: Joseph Timoney
Date Deposited: 01 Feb 2013 11:57
Refereed: Yes
URI:

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