ICASSP 2010, 35th International Conference on Acoustics, Speech, and Signal Processing, March 14-19, 2010, Dallas, Texas, USA
A refined estimation and tracking of the instantaneous frequency variations is desirable for a variety of audio applications (audio coding, singer segregation, music transcription and transformations, etc). In the present paper, we extend the periodic modeling with global amplitude and frequency modulation approach [16]. We introduce a first order approximation producing an additive term involving the derivative of the ‘normalized waveform’ multiplied by the instantaneous FM signal. The variations of the global FM get expressed through a subsampled representation and estimated using a simple least-squares scheme.
Type:
Conference
City:
Dallas
Date:
2010-03-14
Department:
Communication systems
Eurecom Ref:
3084
Copyright:
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