Golomb-rice coding optimized via LPC for frequency domain audio coder

We have devised a method to optimize Golomb-Rice coding of frequency spectra, aiming at its use in frequency domain audio coder, using spectral envelopes extracted by linear predictive coding (LPC) from amplitude spectra instead of conventional power spectra according to theoretical investigations. This optimization improves the efficiency of the Golomb-Rice coding by allocating Rice parameter at each frequency bin based on the value of the envelopes, resulting in the enhancement of the objective and subjective quality of the state-of-the-art wideband coder at 16 kbit/s. Therefore, the method introduced here is expected to be useful for coding audio signals at low-bit-rate and low-delay conditions, required in mobile communications.

[1]  Ralf Geiger,et al.  MDCT-based coder for highly adaptive speech and audio coding , 2009, 2009 17th European Signal Processing Conference.

[2]  Robert F. Rice,et al.  Some practical universal noiseless coding techniques , 1979 .

[3]  Schuyler R. Quackenbush.  MPEG Unified Speech and Audio Coding , 2013, IEEE MultiMedia.

[4]  Stéphane Mallat,et al.  A Theory for Multiresolution Signal Decomposition: The Wavelet Representation , 1989, IEEE Trans. Pattern Anal. Mach. Intell..

[5]  Takehiro Moriya,et al.  Low-complexity PARCOR coefficient quantizer and prediction order estimator for lossless speech coding , 2010, 2010 IEEE International Conference on Acoustics, Speech and Signal Processing.

[6]  Giovanni Motta,et al.  Handbook of Data Compression , 2009 .

[7]  Yuriy A. Reznik.  Coding of prediction residual in MPEG-4 standard for lossless audio coding (MPEG-4 ALS) , 2004, 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[8]  Hirokazu Kameoka,et al.  A Linear Predictive Coding Algorithm Minimizing the Golomb-Rice Code Length of the Residual Signal , 2008 .

[9]  Takehiro Moriya,et al.  Low-complexity PARCOR coefficient quantization and prediction order estimation designed for entropy coding of prediction residuals , 2013 .

[10]  Takehiro Moriya,et al.  The MPEG-4 Audio Lossless Coding (ALS) Standard - Technology and Applications , 2005 .

[11]  T. Robinson.  Simple Lossless and Near-lossless Waveform Compression , 1994 .

[12]  Hirokazu Kameoka,et al.  Direct linear conversion of LSP parameters for perceptual control in speech and audio coding , 2014, 2014 22nd European Signal Processing Conference (EUSIPCO).

[13]  Takehiro Moriya,et al.  Low-Complexity PARCOR Coefficient Quantizer and Prediction Order Estimator for G.711.0 (Lossless Speech Coding) , 2010, 2010 Data Compression Conference.

[14]  R. F. Rice,et al.  Some practical universal noiseless coding techniques, part 2 , 1983 .

[15]  Hirokazu Kameoka,et al.  Representation of spectral envelope with warped frequency resolution for audio coder , 2014, 2014 22nd European Signal Processing Conference (EUSIPCO).

[16]  Takehiro Moriya,et al.  Lossless Compression of Mapped Domain Linear Prediction Residual for ITU-T Recommendation G.711.0 , 2010, 2010 Data Compression Conference.

[17]  Guillermo Sapiro,et al.  LOCO-I: a low complexity, context-based, lossless image compression algorithm , 1996, Proceedings of Data Compression Conference - DCC '96.

[18]  R. W. Schafer,et al.  Lossless compression of digital audio , 2001, IEEE Signal Process. Mag..

[19]  Sascha Disch,et al.  MPEG Unified Speech and Audio Coding-The ISO/MPEG Standard for High-Efficiency Audio Coding of All C , 2012 .

[20]  F. Itakura,et al.  A statistical method for estimation of speech spectral density and formant frequencies , 1970 .

[21]  Takehiro Moriya,et al.  Emerging ITU-T standard G.711.0 — lossless compression of G.711 pulse code modulation , 2010, 2010 IEEE International Conference on Acoustics, Speech and Signal Processing.

[22]  Tilman Liebchen,et al.  MPEG-4 ALS: an emerging standard for lossless audio coding , 2004, Data Compression Conference, 2004. Proceedings. DCC 2004.

[23]  Takehiro Moriya,et al.  MPEG-4 Audio Lossless Coding , 2004 .

[24]  Takehiro Moriya,et al.  Extension and complexity reduction of TwinVQ audio coder , 1996, 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings.