TY - GEN
T1 - Comparison of supervised and semi-supervised beamformers using real audio recordings
AU - Heese, Florian
AU - Schafer, Magnus
AU - Vary, Peter
AU - Hadad, Elior
AU - Golan, Shmulik Markovich
AU - Gannot, Sharon
PY - 2012
Y1 - 2012
N2 - In this contribution two different disciplines for designing microphone array beamformers are explored. On the one hand a fixed beamformer based on numerical near field optimization is employed. On the other hand an adaptive beamformer algorithm based on the linearly constrained minimum variance (LCMV) method is applied. For the evaluation, an audio-database for microphone array impulse responses and audio recordings (speech and noise) was created. Different acoustic scenarios were constructed, consisting of various audio sources (desired speaker, interfering speaker and directional noise) distributed around the microphone array at different angles and distances. The algorithms were compared based on both objective measure (signal-to-noise, signal-to- interference and speech distortion, and subjective tests (assessment of sonograms and informal listening tests).
AB - In this contribution two different disciplines for designing microphone array beamformers are explored. On the one hand a fixed beamformer based on numerical near field optimization is employed. On the other hand an adaptive beamformer algorithm based on the linearly constrained minimum variance (LCMV) method is applied. For the evaluation, an audio-database for microphone array impulse responses and audio recordings (speech and noise) was created. Different acoustic scenarios were constructed, consisting of various audio sources (desired speaker, interfering speaker and directional noise) distributed around the microphone array at different angles and distances. The algorithms were compared based on both objective measure (signal-to-noise, signal-to- interference and speech distortion, and subjective tests (assessment of sonograms and informal listening tests).
KW - Multi-microphone speech enhancement
KW - acoustic measurements
KW - adaptive and data-independent beamformers
UR - http://www.scopus.com/inward/record.url?scp=84871943495&partnerID=8YFLogxK
U2 - 10.1109/eeei.2012.6376965
DO - 10.1109/eeei.2012.6376965
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AN - SCOPUS:84871943495
SN - 9781467346801
T3 - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
BT - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
T2 - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
Y2 - 14 November 2012 through 17 November 2012
ER -