NDLI: Multichannel audio resynthesis based on a generalized Gaussian mixture model and cepstral smoothing

Content Provider	IEEE Xplore Digital Library
Author	Cantzos, D. Mouchtaris, A. Kyriakakis, C.
Copyright Year	2005
Description	Author affiliation: Integrated Media Syst. Center, Univ. of Southern California, Los Angeles, CA, USA (Cantzos, D.)
Abstract	Multichannel audio is an emerging technology with continuously increasing applications. Audio reproduction through multiple channels has the advantage of recreating the acoustic scene with unprecedented fidelity and of immersing the listener in an acoustic environment that is virtually indistinguishable from reality. However, one of the greatest challenges of this scheme is its high transmission requirements especially since accurate rendering through as many possible channels is the main purpose. This paper follows previous techniques on spectral conversion and a recently introduced concept called audio resynthesis. In audio resynthesis, a reference channel is transmitted and then used to recreate the remaining channels at the receiver. An alternative approach to audio resynthesis is presented based on the generalized Gaussian mixture model. This model incorporates most of the standard mixtures (Laplace, Gaussian etc) but this flexibility comes with high structural complexity due to the increased number of model parameters. A scheme is presented here that bypasses this issue and avoids the use of the expectation-maximization (EM) algorithm. A smoothing technique is also introduced which optimizes the performance during the spectral conversion stage and significantly improves the resynthesis results.
Starting Page	215
Ending Page	218
File Size	222756
Page Count	4
File Format	PDF
ISBN	0780391543
DOI	10.1109/ASPAA.2005.1540208
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cepstral analysis Smoothing methods Microphones Audio recording Maximum likelihood estimation Computer science Application software Layout Audio systems Bandwidth
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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