Title :
Extension and complexity reduction of TwinVQ audio coder
Author :
Moriya, Takehiro ; Iwakami, Naoki ; Ikeda, Kazunaga ; Miki, Satoshi
Author_Institution :
NTT Human Interface Labs., Tokyo, Japan
Abstract :
This paper proposes two novel techniques for twinVQ (transform domain weighted interleave VQ) high-quality audio coding scheme for rates lower than 64 kbit/s. One is an extension of the weighted interleave technique to the time and input channel domains as well as the frequency domain. The other is an efficient representation scheme of the spectral envelope by means of a interpolated square root LPC (linear predictive coding) spectrum
Keywords :
audio coding; frequency-domain analysis; interpolation; iterative methods; linear predictive coding; signal representation; spectral analysis; transform coding; vector quantisation; 64 kbit/s; complexity reduction; frequency domain; high-quality audio coding; input channel domain; interpolated square root LPC; linear predictive coding spectrum; spectral envelope representation; time domain; transform domain weighted interleave VQ; twinVQ audio coder; Audio coding; Bit rate; Decoding; Frequency domain analysis; Humans; IEC standards; ISO standards; Linear predictive coding; Quantization; Robustness;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3192-3
DOI :
10.1109/ICASSP.1996.543299
