Title :
Instantaneous and frequency-warped techniques for source separation and signal parametrization
Author_Institution :
Chromatic Res. Inc., Mountain View, CA, USA
Abstract :
This paper summarizes several contributions to the study of audio signal parameterization and source separation. The philosophy of frequency-warped signal processing provides powerful means for separating the AM and FM contributions to the MS bandwidth of a complex-valued, frequency-varying sinusoid p[n], transforming it into a signal with slowly-varying parameters. The use of frequency- and harmonic-locked loops to track the phase variation of analytic signals provides the necessary accurate instantaneous frequency information to drive frequency-warped filtering
Keywords :
acoustic signal processing; AM contribution; FM contribution; MS bandwidth; analytic signals; audio signal; filtering; frequency-locked loops; frequency-varying sinusoid; frequency-warped technique; harmonic-locked loops; instantaneous frequency information; instantaneous technique; phase variation; signal parametrization; signal processing; slowly-varying parameters; source separation; Bandwidth; Frequency locked loops; Harmonic analysis; Information analysis; Information filtering; Information filters; Signal analysis; Signal processing; Source separation; Tracking loops;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1995., IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3064-1
DOI :
10.1109/ASPAA.1995.482910
