A database for microphone array experimentation
Ea-Ee Jan, Piergiorgio Svaizer, James L. Flanagan · 1995
An extensive speech database was collected in two experimental enclosures for research on microphone arrays. The first enclosure is a digitally controlled variable acoustics facility where the reverberation time can be adjusted from 1.7 s to 0.1 s, and the second is a regular hard-walled laboratory. Two different sets of data were collected to address source location and spatial volume selectivity issues. Preliminary results on Matched-filter processing and on Source location are reported for the new database. I. Introduction Performance of microphone sound pick up is degraded by deleterious properties of the acoustic environment, such as multipath distortion (reverberation) and ambient noise. The degradation becomes more prominent in a teleconferencing environment in which the microphone is positioned far away from the speaker. Besides, the ideal teleconference should feel as easy and natural as face-to-face communication with another person. This suggests hands-free sound capture w...