%Aigaion2 BibTeX export from Idiap Publications
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@TECHREPORT{motlicek:rr07-43,
         author = {Motlicek, Petr and Ganapathy, Sriram and Hermansky, Hynek and Garudadri, Harinath},
       projects = {Idiap},
          title = {Non-uniform QMF Decomposition for Wide-band Audio Coding based on Frequency Domain Linear Prediction},
           type = {Idiap-RR},
         number = {Idiap-RR-43-2007},
           year = {2007},
    institution = {IDIAP},
       abstract = {This paper presents a new technique for perfect reconstruction non-uniform QMF decomposition developed to increase efficiency of a generic wide-band audio coding system based on Frequency Domain Linear Prediction (FDLP). The base line FDLP codec, operating at high bit-rates (~136 kbps,',','),
 exploits an uniform QMF decomposition into 64 sub-bands followed by sub-band processing based on FDLP. Here, we propose a non-uniform QMF decomposition into 32 frequency sub-bands obtained by merging 64 uniform QMF bands. The merging operation is performed in such a way that bandwidths of the resulting critically sampled sub-bands emulate the characteristics of the critical band filters in the human auditory system. Such frequency decomposition, when employed in the FDLP audio codec, results in a bit-rate reduction of 40\% over the base line. We also describe the complete audio codec, which provides high-fidelity audio compression at ~66 kbps. In subjective listening tests, the FDLP codec outperforms MPEG-1 Layer 3 (MP3) and achieves similar qualities as MPEG-4 AAC+ standard.},
            pdf = {https://publications.idiap.ch/attachments/reports/2007/motlicek-idiap-rr-07-43.pdf},
     postscript = {ftp://ftp.idiap.ch/pub/reports/2007/motlicek-idiap-rr-07-43.ps.gz},
ipdmembership={speech},
}