Title :
Combined coding of audio and speech signals using LPC and the discrete wavelet transform
Author :
Mason, M. ; Boland, S. ; Sridharan, S. ; Deriche, M.
Author_Institution :
Signal Process. Res. Centre, Queensland Univ. of Technol., Brisbane, Qld., Australia
Abstract :
The aim of combined coding is to compress a mixed signal consisting of speech and music to the highest possible compression ratio and yet maintain user acceptability. This paper proposes a hybrid coder which is capable of coding combined speech and audio signals sampled over the range 16 kHz to 32 kHz. The coder provides high quality audio coding at competitive bit rates over this range of signal sampling frequencies and offers further coding gains when used with speech signals alone
Keywords :
audio coding; data compression; linear predictive coding; music; signal sampling; speech coding; transform coding; wavelet transforms; 16 to 32 kHz; audio coding; coding gains; combined coding; discrete wavelet transform; hybrid coder; mixed signal compression; music; signal sampling frequencies; speech coding; Discrete wavelet transforms; Filter bank; Filtering; Frequency; Humans; Linear predictive coding; Multiple signal classification; Psychoacoustic models; Signal processing; Speech coding;
Conference_Titel :
TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications., Proceedings of IEEE
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-4365-4
DOI :
10.1109/TENCON.1997.648530
