Speech Input Hardware Investigation for Future Dismounted Soldier Computer Systems


  1. Bos, J.C.
  2. Tack, D.W.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Humansystems Inc, Guelph ONT (CAN)
Speech input devices are required by future infantry solders to provide voice input to radio communications systems for voice communication between individuals and to provide speech input to electronic speech recognition systems. A comparison of six types of audio input devices (bone conduction, in-ear, boom, throat and physiological microphones and lip tracking continuous speech recognition) was conducted based upon existing literature, user feedback and the authors’ experience. This report presents the results of that comparison. The results indicate some devices are more compatible with certain soldiering tasks. Overall, the bone conduction microphone is rated better than other types of speech input devices. While the bone conduction microphone has no unique advantages over the other devices in terms of Speech Input Performance, Equipment Compatibility, Fit and Comfort, Tactical Feasibility, Reliability, and Availability and Cost, it achieves consistently high ratings in terms of Free Field Sound Detection, Noise Attenuation, and Durability. The physiological microphone was rated second most acceptable overall. The physiological microphone has unique advantages over all other headsets in terms of Equipment Compatibility and Fit and Comfort. The physiological microphone would likely achieve the highest overall rating if a reliable COTS (Commercial Off-The-Shelf) version was available with acceptable audio quality. The boom microphone was rated third most acceptable overal

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Soldier Information Requirements Technology Demonstration Project;SIREQ TD;speech input device;radio communications;electronic speech recognition system;bone conduction microphone;physiological microphone;boom microphone
Report Number
DRDC-TORONTO-CR-2005-064 — Contractor Report
Date of publication
15 May 2005
Number of Pages
Electronic Document(PDF)

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