Paper Info
Title
Parametric stereo extension of ITU-T G.722 based on a new downmixing scheme
Abstract
In this paper, we present a novel, frequency-domain stereo to mono downmixing, which preserves the energy of spectral components and avoids setting the left or right channel as a phase reference. Based on this downmixing technique, a parametric stereo analysis-synthesis model is described in which subband stereo parameters consist of interchannel level differences and phase differences between the mono signal and one of the stereo channels (left or right). This model is applied to the stereo extension of ITU-T G.722 at 56+8 and 64+16 kbit/s with a frame length of 5 ms. AB test results are provided to assess the quality of the proposed downmixing technique. In addition, the quality of the proposed G.722-based stereo coder is compared against reference coders (G.722.1 at 24 and 32 kbit/s dual mono and G.722 at 64 kbit/s dual mono) for clean speech, noisy speech and music.
Year
DOI
Venue
2010
10.1109/MMSP.2010.5662017
MMSP
Keywords
Field
DocType
mono signal,audio coding,frequency-domain mono downmixing,spectral component,parametric stereo analysis-synthesis model,frequency-domain analysis,frequency-domain stereo downmixing,spectral analysis,stereo coder,subband stereo parameter,stereo channel,itu-t g.722,frequency domain analysis,speech coding,speech,frequency domain,decoding
Spectral component,Frequency domain,Computer vision,Speech coding,Computer science,Bit rate,Communication channel,Speech recognition,Artificial intelligence,G.722,Decoding methods,Parametric Stereo
Conference
ISBN
Citations 
PageRank 
978-1-4244-8111-8
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Thi Minh Nguyet Hoang111.11
Stéphane Ragot2739.92
Balázs Kövesi3579.57
Pascal Scalart4925283.73