A Computational Efficient Method For Bandwidth Extension of a Conference Phone
Ansvarlig organisasjon
2003 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert) PublishedAlternativ tittel
En beräkningseffektiv metod för att utöka bandvidden hos en konferenstelefon (svensk)
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.
sted, utgiver, år, opplag, sider
Los Angeles, CA, USA: IEEE , 2003.
Emneord [en]
Hands-Free, Bandwidth Extension, Acoustic Echo Cancellation, Adaptive Gain.
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-10215Lokal ID: oai:bth.se:forskinfo215508973D1EDD07C1256F72004C65EFISBN: 0 7803 7721 4 (tryckt)OAI: oai:DiVA.org:bth-10215DiVA, id: diva2:838288
Konferanse
2003 Digest of Technical Papers. International Conference on Consumer Electronics
Merknad
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