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Convention Paper

Dereverberation of Musical Instrument Recordings for Improved Note Onset Detection and Instrument Recognition

Authors: Wilmering, Thomas; Barthet, Mathieu; Sandler, Mark B.

AES Convention 131 · Paper 8508 · October 2011

Abstract

In previous experiments it has been shown that reverberation affects the accuracy of onset detection and instrument recognition. Pre-processing a reverberated speech signal with dereverberation for automatic speech recognition (ASR), where reverberation also decreases efficiency, has been proven effective for mitigating this performance decrease. In this paper we present the results of an experimental study addressing the problem of onset detection and instrument recognition from musical signals in reverberant condition by pre-processing the audio material with a dereverberation algorithm. The experiments include four different onset detection techniques based on energy, spectrum and phase. The instrument recognition algorithm is based on line spectral frequencies (LSF) and k-means clustering. Results show improvement in onset detection performance, particularly of the spectral-based techniques. In certain conditions we also observed improvement in instrument recognition.

Details

Published in
AES Convention 131
AES Convention
131
Paper number
8508
Publication date
October 6, 2011
Session subject
Posters: Production and Analysis of Musical Sounds
Affiliation
Queen Mary University of London, London, UK (See document for exact affiliation information.)
Type
Convention Paper