<p>The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises a linear prediction unit for filtering an input signal based on an adaptive filter; a transformation unit for transforming a frame of the filtered input signal into a transform domain; a quantization unit for quantizing a transform domain signal; a long term prediction unit for determining an estimation of the frame of the filtered input signal based on a reconstruction of a previous segment of the filtered input signal; and a transform domain signal combination unit for combining, in the transform domain, the long term prediction estimation and the transformed input signal to generate the transform domain signal.</p>
申请公布号
WO2009086919(A1)
申请公布日期
2009.07.16
申请号
WO2008EP11145
申请日期
2008.12.30
申请人
DOLBY SWEDEN AB;BISWAS, ARIJIT;PURNHAGEN, HEIKO;KJOERLING, KRISTOFER;RESCH, BARBARA;VILLEMOES, LARS, FALCK;HEDELIN, PER, HENRIK
发明人
BISWAS, ARIJIT;PURNHAGEN, HEIKO;KJOERLING, KRISTOFER;RESCH, BARBARA;VILLEMOES, LARS, FALCK;HEDELIN, PER, HENRIK