Title :
On the use of backward adaptation in a perceptual audio coder
Author :
Rodrigues, Joao Manuel ; Tomé, Ana Maria
Author_Institution :
Dept. de Electron. e Telecoms, Aveiro Univ., Portugal
fDate :
7/1/2000 12:00:00 AM
Abstract :
Typically, perceptual audio coders have followed a subband or transform coding scheme with forward-adaptive quantization. In this letter we present an alternative scheme which uses backward-adaptive quantization, we discuss the effects of this strategy on perceptual coding and show that it can be successfully applied
Keywords :
adaptive codes; audio coding; backward adaptation; backward-adaptive quantization; perceptual audio coder; perceptual coding; Audio coding; Bit rate; Filter bank; Frequency estimation; Masking threshold; Noise generators; Psychoacoustic models; Quantization; Signal analysis; Signal generators;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
