Title :
Alias-free, multiresolution sinusoidal modeling for polyphonic, wideband audio
Author :
Levine, Scott N. ; Verma, Tony S. ; Smith, Julius O., III
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
Abstract :
We describe an improved method of generating more accurate sinusoidal parameters (amplitude, frequency, phase) from a wideband polyphonic audio source in a multiresolution, non-aliased fashion. This significantly improves upon previous work of sinusoidal modeling that assumes a single-pitched monophonic source, such as speech or an individual musical instrument. In addition to a more general analysis, we can now perform high-quality transformations such as time-stretching and pitch-shifting on polyphonic audio with ease
Keywords :
acoustic signal processing; amplitude estimation; audio signals; frequency estimation; music; phase estimation; signal resolution; speech processing; alias-free sinusoidal modeling; amplitude; audio signals; frequency; high-quality transformations; listening tests; multiresolution sinusoidal modeling; musical instrument; parameter estimation; phase; pitch-shifting; single-pitched monophonic source; sinusoidal parameters; speech signals; time-stretching; wideband polyphonic audio source; Acoustics; Frequency estimation; Instruments; Music; Parameter estimation; Performance analysis; Signal resolution; Signal synthesis; Speech; Wideband;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1997. 1997 IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3908-8
DOI :
10.1109/ASPAA.1997.625602
