000146189 001__ 146189
000146189 005__ 20180317093249.0
000146189 037__ $$aREP_WORK
000146189 245__ $$aEntropy coding of Quantized Spectral Components in FDLP audio codec
000146189 269__ $$a2008
000146189 260__ $$bIdiap$$c2008
000146189 336__ $$aReports
000146189 520__ $$aAudio codec based on Frequency Domain Linear Prediction (FDLP) exploits auto-regressive modeling to approximate instantaneous energy in critical frequency sub-bands of relatively long input segments. Current version of the FDLP codec operating at 66 kbps has shown to provide comparable subjective listening quality results to the state-of-the-art codecs on similar bit-rates even without employing strategic blocks, such as entropy coding or simultaneous masking. This paper describes an experimental work to increase compression efficiency of the FDLP codec provided by employing entropy coding. Unlike traditionally used Huffman coding in current audio coding systems, we describe an efficient way to exploit Arithmetic coding to entropy compress quantized magnitude spectral components of the sub-band FDLP residuals. Such approach outperforms Huffman coding algorithm and provides more than 3 kbps bit-rate reduction.
000146189 700__ $$aMotlicek, Petr
000146189 700__ $$0243993$$aGanapathy, Sriram$$g173247
000146189 700__ $$0241097$$aHermansky, Hynek$$g154878
000146189 8564_ $$uhttp://publications.idiap.ch/downloads/reports/2008/Motlicek_Idiap-RR-71-2008.pdf$$zURL
000146189 8564_ $$s458443$$uhttps://infoscience.epfl.ch/record/146189/files/Motlicek_Idiap-RR-71-2008.pdf$$zn/a
000146189 909CO $$ooai:infoscience.tind.io:146189$$preport$$pSTI
000146189 909C0 $$0252189$$pLIDIAP$$xU10381
000146189 937__ $$aLIDIAP-REPORT-2008-014
000146189 970__ $$aMotlicek_Idiap-RR-71-2008/LIDIAP
000146189 973__ $$aEPFL$$sPUBLISHED
000146189 980__ $$aREPORT