METHOD AND APPARATUS FOR IMPROVING VOICE INTELLIGIBILITY IN HIGH NOISE ENVIRONMENTS
Patent №
US 4,771,472
Granted
1988-09-13
Filed 1987
Owner
HUGHES AIRCRAFT COMPANY, LOS ANGELES, CA., A CORP. OF DE.
+1 more
Lab
—
AI components
1
speech
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07038259
The output of a noise canceling first or second order electret gradient microphone in a very high noise environment has background noise attenuated and certain phonemes shaped to improve intelligibility by means of a slow action automatic gain control circuit 22 which matches dynamic range of the microphone 10 with dynamic range of the following communication channel, and a fast action automatic gain control circuit 24 in parallel with the first circuit, that reshapes puff noise into plosive, fricative and affricative speech component signals that produced the puff noise.
AI classification
Ownership
HUGHES AIRCRAFT COMPANY, LOS ANGELES, CA., A CORP. OF DE.
assignment · 46970394
PALOMAR TECHNOLOGIES CORPORATION
assignment · 77150955
Assignors
WILLIAMS, JOHN M. III, WARTHER, DONALD P., LAWSON, ROBERT C.
On an employer assignment, the assignors are typically the inventors.