Flight Test Results of ITT VRS-1290 In NASA OV-10
Abstract
This paper discusses the results of a recently completed flight test of an ITT VRS-1290 speaker dependent, continuous speech recognition system onboard a NASA Lewis Research Center OV-10A aircraft. A 54-word vocabulary was tested with thirteen pilots using an M-162 boom-mounted microphone on the ground and under 1g and 3g flight conditions. Digital audio tape (DAT) recordings were made of both the subjects spoken phrases and the ambient background noise. Under some flight conditions, noise levels in the rear cockpit of the OV-10A were in excess of 115 dB which made it an ideal platform for testing the robustness of the ITT system. The DAT recordings were a critical element in optimizing the performance of the ITT system during the early stages of the flight test program. Average word accuracy for the thirteen pilots was 98.3% in the 1g condition and 97.3% in the 3g condition. Also discussed are plans for future testing using the DAT generated database with other speech systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1996
- Accession Number
- ADA430691
Entities
People
- David T. Williamson
- Kristen K. Liggett
- Timothy P. Barry
Organizations
- Air Force Research Laboratory