The Armed Forces -National Research Council Committee on Hearing and Bio-Acoustics (CHABA) was organized early in 1953 to provide consultation pnd advice to the Armed Forces in the general areas of (1) the effects and control of noise, (2) auditory discrimination, (3) speech communication, (4) the fundamental mechanism of hearing, and (5) auditory standards. The term "bio-acoustics" includes the direct non-auditory effects of high-intensity sound and vibration on man's body, the relevant

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... l and engineering problems of noise generation, measurement, and control, and the psychological and social reactions of man and of animals to noise. The activities of CHABA are supported equally by the Army, Navy, and the Air Force. CHABA is not a contracting agency. It does not dispense funds, although it may recommend that research along certain lines be carried out. It is not itself a research organization. Its output is not data but advice. Council. At least one or two of the members of each working group are already members of CHABA, but often outside consultants are also invited to serve. When a working group has prepared its report, the Executive Council has the responsibility for accepting and transmitting the report, either with or without additional comment or endorsement.