Title :
Strategies for bit allocation reuse in audio transcoding
Author :
Mansour, Mohamed F.
Author_Institution :
Texas Instrum. Inc., Dallas, TX
Abstract :
We study the reuse of the bit allocation information in audio transcoding by exploiting the similarity in subband audio coding schemes. We show that important information can be deduced to reduce the encoder complexity even if the two coders employ different psychoacoustic model. We give a case study on MPEG AAC/Dolby AC-3 transcoding. The proposed algorithms can be extended to other audio transcoding schemes.
Keywords :
acoustic signal processing; audio coding; transcoding; MPEG AAC/Dolby AC-3 transcoding; audio transcoding; bit allocation reuse; encoder complexity; psychoacoustic model; subband audio coding schemes; Additive noise; Audio coding; Bit rate; Decoding; Frequency estimation; Instruments; Psychoacoustic models; Quantization; Random variables; Transcoding; AAC; AC-3; Bit Allocation; Transcoding;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2009.4959544
