Title :
Signal representation and estimation of spectral parameters by inharmonic comb filters with application to the piano
Author :
Galembo, Alexander ; Askenfelt, Anders
Author_Institution :
Inst. of Evolutionary Physiol. & Biochem., Acad. of Sci., St. Petersburg, Russia
fDate :
3/1/1999 12:00:00 AM
Abstract :
A method for signal representation in the frequency domain is described, using a comb filter design with nonequidistant spacing of the filter bands (inharmonic comb filter). This approach offers several advantages when studying the properties of a signal source with inharmonic components. An analytical relation between the partial frequencies, or some hypothesis of this relation, is needed beforehand. An application of the method is presented in which piano tones are visualized in a new way, allowing for an automatic and accurate measurement of fundamental frequency and inharmonicity coefficient. Possible directions for further development and some interesting application areas are discussed
Keywords :
acoustic signal processing; comb filters; frequency-domain analysis; musical acoustics; musical instruments; parameter estimation; signal representation; spectral analysis; analytical relation; application areas; filter bands; frequency domain; fundamental frequency; inharmonic comb filters; inharmonic components; inharmonicity coefficient; musical tone analysis; nonequidistant spacing; partial frequencies; piano tones; pitch; signal representation; signal source; spectral parameter estimation; string; Band pass filters; Displays; Frequency; Harmonic analysis; Matched filters; Parameter estimation; Power harmonic filters; Signal analysis; Signal representations; Speech analysis;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
