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Broadcast-Quality Speech from Diving Helmets

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Over a period of about 9 years, the BBC has worked to improve the quality of speech sounds from diving helmets. Careful selection of equipment, detailed application of equalization, and active noise suppression are all essential in achieving the desired results. The necessary signal processing in the context of two specific series of programs is described.

JAES Volume 37 Issue 11 pp. 927-933; November 1989
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AES - Audio Engineering Society