Improving Automatic Speech Recognition (ASR) Over Copper Telephone Lines by Exploting Islands of High Quality Large Bandwidth Network Connections
Original Publication Date: 2004-Mar-04
Included in the Prior Art Database: 2004-Mar-04
Speech recognition degrades over low-quality telephone microphones, and low-bandwidth transmission lines. This inhibits the creation of rich speech automated customer service applications. This invention proposes better exploitation of areas where high quality, high bandwidth transmission is possible. Service organizations can capture customer speech at the locus of their digitial switches, thereby exploiting the higher quality digital telephone microphones and the high bandwidth transmission at these sites. ASR (automatic speech recognition) servers can be placed at these sites, and the speech processing can occur locally. Alternatively, the speech can be digitized locally, and sent as cepstra to the service application server, before speech degradation has occurred.