Abstract
By using room impulse response shortening and reshaping it is possible to reduce the reverberation effects and therefore improve the perceived quality. This may be achieved by a prefilter that modifies the overall impulse response to have a faster decay. The traditional filter shortening approach using least-squares methods is fast and directly computable, but it suffers from late echoes. Newer approaches using the p-norm overcome this drawback but are computationally very demanding, as the optimization process uses a gradient-descent approach with slow convergence. In this work we propose a modification to this approach that results in a significantly faster convergence. With this modification, the algorithm is less likely to be trapped in a local minimum and therefore also leads to a better convergence point. The method will be demonstrated on simulated and real-world room impulse responses.
Original language | English |
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Title of host publication | 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) |
Number of pages | 4 |
Publisher | IEEE |
Publication date | 01.03.2012 |
Pages | 185-188 |
Article number | 6287848 |
ISBN (Print) | 978-1-4673-0045-2 |
ISBN (Electronic) | 978-1-4673-0046-9 |
DOIs | |
Publication status | Published - 01.03.2012 |
Event | 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing - Kyoto, Japan Duration: 25.03.2012 → 30.03.2012 Conference number: 93091 |