A Filter Structure for Low Delay Noise Suppression

Conference: Sprachkommunikation 2006 - ITG-Fachtagung
04/26/2006 - 04/28/2006 at Kiel, Germany

Proceedings: Sprachkommunikation 2006

Pages: 4Language: englishTyp: PDF

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Löllmann, Heinrich W.; Vary, Peter (Institute of Communication Systems and Data Processing, RWTH Aachen University, 52056 Aachen, Germany)

Many noise suppression systems are based on (short-term) spectral-domain filtering by using an analysis-synthesis filter-bank. This filtering technique causes a relatively high signal delay as a filter-bank for the analysis and synthesis part is needed. In this contribution, a filter structure with a significantly lower signal delay is presented. The proposed low delay filter achieves a higher amount of noise reduction than an analysis-synthesis filter-bank with the same signal delay.