Title :
Reduction of broad-band noise in speech by truncated QSVD
Author :
Jensen, Soren Holdt ; Hansen, Per Christian ; Hansen, Steffen Duus ; Sørensen, John Aasted
Author_Institution :
Electron. Inst., Tech. Univ. Denmark, Lyngby, Denmark
fDate :
11/1/1995 12:00:00 AM
Abstract :
We consider an algorithm for reduction of broadband noise in speech based on signal subspaces. The algorithm is formulated by means of the quotient singular value decomposition (QSVD). With this formulation, a prewhitening operation becomes an integral part of the algorithm. We demonstrate that this is essential in connection with updating issues in real-time recursive applications. We also illustrate by examples that we are able to achieve a satisfactory quality of the reconstructed signal
Keywords :
noise; signal reconstruction; singular value decomposition; speech enhancement; broadband noise reduction; prewhitening operation; quotient singular value decomposition; real-time recursive applications; signal reconstruction; signal subspaces; speech enhancement; truncated QSVD; updating; Acoustic noise; Linear predictive coding; Matrix decomposition; Microphones; Noise cancellation; Noise reduction; Speech analysis; Speech enhancement; Speech synthesis; Telephony;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
