Title :
A Prony method for high-quality audio coding
Author :
Paraskevas, M. ; Tsoukalas, D. ; Mourjopoulos, J.
Author_Institution :
Wire Commun. Lab., Patras Univ., Greece
Abstract :
A technique for high-quality audio signal coding is proposed. The technique follows Prony modeling of the audio signal. A new method for dynamic estimation of the model order is proposed, based on an analysis/synthesis process with psychoacoustic criteria. According to this approach the model order is iteratively estimated, until the distortion introduced by inaccurate order selection becomes inaudible. An average coding rate gain of 6:1 can be achieved in this way without loss in signal quality.<>
Keywords :
audio signals; digital signals; encoding; iterative methods; Prony modeling; analysis/synthesis process; coding rate gain; distortion; dynamic estimation; high-quality audio signal coding; psychoacoustic criteria;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on
Conference_Location :
Minneapolis, MN, USA
Print_ISBN :
0-7803-7402-9
DOI :
10.1109/ICASSP.1993.319091
