TY - GEN
T1 - Study of speech intelligibility in noisy enclosures using optimal spherical beamforming
AU - Peled, Yotam
AU - Rafaely, Boaz
PY - 2008/12/1
Y1 - 2008/12/1
N2 - Reverberation and noise have a significant effect on the intelligibility of speech in rooms. Detection of clear speech in highly reverberantand noisy enclosures is an extremely difficult problem. In this work we take the approach of spatial filtering by spherical microphone array to overcome noise and reverberation. In order to investigate speech intelligibility, an acoustic model was developed. The model is based on U50, which was shown to have good correlation with speech intelligibility, while combining the effect of both reverberation and noise. This paper presents the array beamforming design for optimal speech intelligibility performance. The beamformer is designed to enhance the speech signal while minimizing noise power and maintaining robustness at a wide frequency range. Having such a model allows the prediction of the required array order for detecting speech clearly.
AB - Reverberation and noise have a significant effect on the intelligibility of speech in rooms. Detection of clear speech in highly reverberantand noisy enclosures is an extremely difficult problem. In this work we take the approach of spatial filtering by spherical microphone array to overcome noise and reverberation. In order to investigate speech intelligibility, an acoustic model was developed. The model is based on U50, which was shown to have good correlation with speech intelligibility, while combining the effect of both reverberation and noise. This paper presents the array beamforming design for optimal speech intelligibility performance. The beamformer is designed to enhance the speech signal while minimizing noise power and maintaining robustness at a wide frequency range. Having such a model allows the prediction of the required array order for detecting speech clearly.
KW - MVDR
KW - Reverberation
KW - Room acoustics
KW - Speech intelligibility
KW - Spherical microphone array
UR - http://www.scopus.com/inward/record.url?scp=62749092540&partnerID=8YFLogxK
U2 - 10.1109/EEEI.2008.4736706
DO - 10.1109/EEEI.2008.4736706
M3 - Conference contribution
AN - SCOPUS:62749092540
SN - 9781424424825
T3 - IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings
SP - 285
EP - 289
BT - 2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
T2 - 2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Y2 - 3 December 2008 through 5 December 2008
ER -