NDLI: Bayesian suppression of memoryless nonlinear audio distortion

Content Provider	IEEE Xplore Digital Library
Author	Carvalho, H.T. Avila, F.R. Biscainho, L.W.P.
Copyright Year	2015
Description	Author affiliation: SMT/PEE/COPPE, Fed. Univ. of Rio de Janeiro, Rio de Janeiro, Brazil (Carvalho, H.T.; Biscainho, L.W.P.) \|\| PROSAICO/PEL, Rio de Janeiro State Univ., Rio de Janeiro, Brazil (Avila, F.R.)
Abstract	Even if nonlinear distortion may be deliberately applied to audio signals for esthetic or technical reasons, it is common to hear annoying defects in accidentally saturated or amateurishly processed audio - which calls for some means to automatically undo the impairment. This paper proposes an algorithm to blindly identify the nonlinear distortion suffered by an audio signal and reconstruct its original form. Designed to deal with memoryless impairments, the model adopted for the nonlinear distortion is a curve composed of an invertible sequence of linear segments, capable of following the typical shape of compressed audio, and whose parameters are easily interpretable and thus constrainable. The solution builds on the posterior statistical distribution of the curve parameters given the degraded signal, and yields perceptually impressive results for real signals distorted by arbitrary curves.
Starting Page	1058
Ending Page	1062
File Size	147405
Page Count	5
File Format	PDF
ISBN	9780992862633
ISSN	20761465
DOI	10.1109/EUSIPCO.2015.7362545
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-31
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	EURASIP
Subject Keyword	Shape Nonlinear distortion Audio processing Signal processing algorithms Europe White noise Bayesian signal processing Blind system identification
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
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in