Title :
Improved modeling of audio signals by modifying transient locations
Author :
Vafin, Renat ; Heusdens, Richard ; van de Par, Steven ; Kleijn, W. Bastiaan
Author_Institution :
Dept. of Speech, Music & Hearing, R. Inst. of Technol., Stockholm, Sweden
Abstract :
We propose a method for obtaining an improved representation of transients in audio signals. The representation is based on a damped sinusoidal model. To improve the representation, transient locations are modified in such a way that a transient can start only at the beginning of a sinusoidal segment. The introduced modifications facilitate a reduction of the number of damped sinusoids needed to model a transient well and eliminate pre-echo artifacts. We verify with a listening test that the modifications do not result in a perceptual difference between the original and modified audio signals
Keywords :
audio coding; parameter estimation; signal representation; audio signals; damped sinusoidal model; modified transient locations; parameter estimation; parametric audio coding; pre-echo artifacts; restricted time segmentation; Algorithm design and analysis; Audio coding; Auditory system; Bit rate; Laboratories; Multiple signal classification; Signal analysis; Signal processing; Speech processing; Testing;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 2001 IEEE Workshop on the
Conference_Location :
New Platz, NY
Print_ISBN :
0-7803-7126-7
DOI :
10.1109/ASPAA.2001.969563
