Title :
Scalable audio coding using watermarking
Author :
Movassagh, Mahmood ; Kabal, Peter
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
A scalable audio coding method is proposed using a technique, Quantization Index Modulation, borrowed from watermarking. Some of the information of each layer output is embedded (watermarked) in the previous layer. This approach leads to a saving in bitrate while keeping the distortion almost unchanged. This makes the scalable coding system more efficient in terms of Rate-Distortion. The results show that the proposed method outperforms the scalable audio coding based on reconstruction error quantization which is used in practical systems such as MPEG-4 AAC.
Keywords :
audio coding; audio watermarking; distortion; modulation; quantisation (signal); MPEG-4 AAC; quantization index modulation; rate distortion; reconstruction error quantization; scalable audio coding method; scalable coding system; watermarking; Audio coding; Bit rate; Entropy; Indexes; Quantization (signal); Watermarking; Entropy coding; Quantization Index Modulation; Scalable coding; Watermarking;
Conference_Titel :
Multimedia and Expo (ICME), 2013 IEEE International Conference on
Conference_Location :
San Jose, CA
DOI :
10.1109/ICME.2013.6607580