Title
Far-field ASR on inexpensive microphones
Abstract
For a connected digits speech recognition task, we have com- pared the performance of two inexpensive electret microphones with that of a single high quality PZM microphone. Recogni- tion error rates were measured both with and without compen- sation techniques, where both single-channel and two-channel approaches were used. In all cases the task was recognition at a significant distance (2-6 feet) from the talker' s mouth. The re- sults suggest that the wide variability in characteristics among inexpensive electret microphones can be compensated for with- out explicit quality control, and that this is particularly effec- tive when both single-channel and two-channel techniques are used. In particular, the resulting performance for the inexpen- sive microphones used together is essentially equivalent to the expensive microphone, and better than for either inexpensive microphone used alone.
Year
Venue
Keywords
2003
INTERSPEECH
speech recognition,error rate,quality control
DocType
Citations 
PageRank 
Conference
2
0.76
References 
Authors
6
3
Name
Order
Citations
PageRank
Laura Docío Fernández18318.72
David Gelbart213417.54
Nelson Morgan33048533.52