TY - GEN
T1 - Constrained estimation of percussive sound excitations
AU - Fink, Alex
AU - Spanias, Andreas
PY - 2011
Y1 - 2011
N2 - Source-filter models for sound resynthesis are useful in applications including compression of audio data and restoration of noisy recordings. Driven by actual recordings of sounding objects, resynthesis methods require system identification and excitation source estimation. Such methods may be entirely data-driven, but they may also incorporate a priori knowledge of systems or excitations. This paper proposes a method of estimating the excitation of percussively struck resonant objects from sound recordings, constraining the excitation to be time-limited. The constraint serves to use prior knowledge of the short duration of the excitations of percussive sounds, improving estimation when compared to other methods of unconstrained estimation and inverse filtering. Evaluated examples and simulations demonstrate the proposed method's robustness to noise and applicability to the analysis and resynthesis of acoustic recordings.
AB - Source-filter models for sound resynthesis are useful in applications including compression of audio data and restoration of noisy recordings. Driven by actual recordings of sounding objects, resynthesis methods require system identification and excitation source estimation. Such methods may be entirely data-driven, but they may also incorporate a priori knowledge of systems or excitations. This paper proposes a method of estimating the excitation of percussively struck resonant objects from sound recordings, constraining the excitation to be time-limited. The constraint serves to use prior knowledge of the short duration of the excitations of percussive sounds, improving estimation when compared to other methods of unconstrained estimation and inverse filtering. Evaluated examples and simulations demonstrate the proposed method's robustness to noise and applicability to the analysis and resynthesis of acoustic recordings.
KW - Acoustic signal processing
KW - Deconvolution
KW - Estimation
KW - Signal analysis
KW - Signal reconstruction
UR - http://www.scopus.com/inward/record.url?scp=83455255678&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=83455255678&partnerID=8YFLogxK
U2 - 10.1109/ASPAA.2011.6082338
DO - 10.1109/ASPAA.2011.6082338
M3 - Conference contribution
AN - SCOPUS:83455255678
SN - 9781457706912
T3 - IEEE Workshop on Applications of Signal Processing to Audio and Acoustics
SP - 201
EP - 204
BT - 2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2011
T2 - 2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2011
Y2 - 16 October 2011 through 19 October 2011
ER -