A Computational Efficient Method For Bandwidth Extension of a Conference Phone
Responsible organisation
2003 (English)Conference paper, Published 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.
Keywords [en]
Hands-Free, Bandwidth Extension, Acoustic Echo Cancellation, Adaptive Gain.
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-10215Local ID: oai:bth.se:forskinfo215508973D1EDD07C1256F72004C65EFISBN: 0 7803 7721 4 (print)OAI: oai:DiVA.org:bth-10215DiVA, id: diva2:838288
Conference
2003 Digest of Technical Papers. International Conference on Consumer Electronics
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2012-09-182004-12-222015-06-30Bibliographically approved