Change search
ReferencesLink to record
Permanent link

Direct link
A Computational Efficient Method For Bandwidth Extension of a Conference Phone
Responsible organisation
2003 (English)Conference paper (Refereed) PublishedAlternative title
En beräkningseffektiv metod för att utöka bandvidden hos en konferenstelefon (Swedish)
Abstract [en]

This paper presents a computationally efficient method for extension of the bandwidth of a conference telephone. The proposed method allows an improvement in quality, i.e. increased bandwidth, at a negligible extra computational cost. This is performed by a combination of an acoustic echo cancellation unit and an adaptive gain unit. The proposed method was implemented in a real-time system. Frequency analysis in combination with subjective tests showed that the proposed method extends the bandwidth with high quality.

Abstract [sv]

En metod för breddning av kommunikationsbandvidden hos en konferenstelefon. Grundidéen är att dela upp talsignalerna i två frekvensband och utföra ekoeliminering i det undre bandet med hjälp av systemidentifiering, medan det övre bandet processas med en adaptiv dämpning. Keywords: Konferenstelefoni, talförbättring, akustiskt eko.

Place, publisher, year, edition, pages
Los Angeles, CA, USA: IEEE , 2003.
Keyword [en]
Hands-Free, Bandwidth Extension, Acoustic Echo Cancellation, Adaptive Gain.
National Category
Signal Processing
URN: urn:nbn:se:bth-10215Local ID: 0 7803 7721 4OAI: diva2:838288
2003 Digest of Technical Papers. International Conference on Consumer Electronics
Copyright © 19xx/20xx IEEE. Reprinted from (all relevant publication info). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of BTH's products or services Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by sending a blank email message to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.Available from: 2012-09-18 Created: 2004-12-22 Last updated: 2015-06-30Bibliographically approved

Open Access in DiVA

fulltext(469 kB)30 downloads
File information
File name FULLTEXT01.pdfFile size 469 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links


Search in DiVA

By author/editor
Dahl, MattiasClaesson, Ingvar
Signal Processing

Search outside of DiVA

GoogleGoogle Scholar
Total: 30 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 29 hits
ReferencesLink to record
Permanent link

Direct link