Reduction of broad-band noise in speech by truncated QSVD

Søren Holdt Jensen, Per Christian Hansen, Steffen Duus Hansen, John Aasted Sørensen

Research output: Contribution to journalJournal articleResearchpeer-review


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.
Original languageEnglish
JournalIEEE transactions on speech and audio processing
Issue number6
Pages (from-to)439-448
Number of pages10
Publication statusPublished - 1995


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