Title :
Hybrid audio coding for speech and audio below medium bit rate
Author :
Makino, Kosuke ; Matsumoto, J.
Author_Institution :
Dev. Center, Sony Corp., Tokyo, Japan
Abstract :
A novel a audio/speech coding algorithm, hybrid audio coding (HAC) is described. New features of the algorithm include window switching with generalized MDCT, an improved quantization scheme of the MDCT coefficients, and waveform normalization in the time domain. HAC provides a good quality at a bit rate of 8 to 16 kbps, and it is also proven that the developed algorithm is effective for both audio and speech signals.
Keywords :
audio coding; discrete cosine transforms; music; quantization (signal); speech coding; transform coding; 8 to 16 kbit/s; MDCT coefficients quantization; audio signals; audio/speech coding algorithm; generalized MDCT; hybrid audio coding; music signals; quantization; speech coding; speech signals; time-domain waveform normalization; window switching; Audio coding; Bit rate; Codecs; Decoding; Linear predictive coding; Multiple signal classification; Quantization; Smoothing methods; Speech coding; Testing;
Conference_Titel :
Consumer Electronics, 2000. ICCE. 2000 Digest of Technical Papers. International Conference on
Conference_Location :
Los Angles, CA, USA
Print_ISBN :
0-7803-6301-9
DOI :
10.1109/ICCE.2000.854618
