Paper Info
Title
Re-engineering ITU-T G.722: Low delay and complexity superwideband coding at 64 kbit/s with G.722 bitstream watermarking
Abstract
This paper presents the lowest bitrate mode (64 kbit/s) of the new superwideband (SWB, 50-14000 Hz) coder, recently standardized as ITU-T G.722 Annex B. This mode provides a superwideband extension of G.722 at 56 kbit/s with one 8 kbit/s enhancement layer divided in two sub-layers. The resulting bitstream is compatible with ITU-T G.722 at 64 kbit/s and can be viewed as watermarking G.722 least significant bits (LSBs). The novel technologies in this mode include G.722 enhancements (noise feedback coding, scalable quantization in G.722 higher band), as well as multimode bandwidth extension (BWE). Selected ITU-T characterization test results and additional informal test results show that the 64 kbit/s mode of G.722 Annex B gives high SWB quality with low delay and complexity.
Year
DOI
Venue
2011
10.1109/ICASSP.2011.5947541
Acoustics, Speech and Signal Processing
Keywords
Field
DocType
speech coding,watermarking,BWE,G.722 bitstream watermarking,bit rate 56 kbit/s,bit rate 64 kbit/s,bit rate 8 kbit/s,complexity superwideband coding,frequency 50 Hz to 14000 Hz,high SWB quality,multimode bandwidth extension,reengineering ITU-T G.722,G.722B,Speech coding,audio coding,bandwidth extension,superwideband,watermarking
Digital watermarking,Speech coding,Computer science,Bandwidth extension,Coding (social sciences),G.722,Artificial intelligence,Pattern recognition,Arithmetic,Speech recognition,Harmonic Vector Excitation Coding,Quantization (signal processing),Bitstream
Conference
Volume
Issue
ISSN
null
null
1520-6149 E-ISBN : 978-1-4577-0537-3
ISBN
Citations 
PageRank 
978-1-4577-0537-3
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Balázs Kövesi1579.57
Stéphane Ragot2739.92
Claude Lamblin3175.50
Lei Miao48914.59
Ze-xin Liu592.78
Hu Chen615017.55