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Speech-Recognition Software for Air Traffic Control

Award Information

Department of Defense
Award ID:
Program Year/Program:
1996 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Tanner Research, Inc.
825 S. Myrtle Ave. Monrovia, CA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 1996
Title: Speech-Recognition Software for Air Traffic Control
Agency / Branch: DOD / NAVY
Contract: N/A
Award Amount: $99,988.00


Air traffic control (ATC) is a complex task that is taxing on the human operator. It has long been recognized that voice input can greatly simplify the operator's task and reduce fatigue. Current real-time ATC training systems rely on expensive, special-purpose hardware. A portable all-software solution would reduce costs and be more readily modified for future needs. In Phase I, we propose to develop a baseline continuous-speech system using our novel single- and multi-stream approach. We have previously demonstrated that this approach lowers error rates up to twenty-fold for isolated-word recognition, in particular when noise is intense and differs between training and testing-a traditionally difficult problem. We will compute the trade-off curves between accuracy, speed of computation, the size of the vocabulary and grammar perplexity. By trading off the increased accuracy for speed, we predict real-time performance for an all-software solution. We will also apply the multi-stream approach to the speaker-independent domain. In Phase I, we will build a continuous-speech system based on the single/multi-stream approach. The work will provide a foundation for Phase II, where we will extend the baseline system to the full ATC vocabulary and deploy and test prototypes.

Principal Investigator:

Ojvind Bernander, Ph.d.

Business Contact:

Small Business Information at Submission:

Tanner Research, Inc.
180 N. Vinedo Avenue Pasadena, CA 91107

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No