The rating of helicopter noise
Subtitle: development of a proposed impulse correction
By: by B.F. Berry ... [et al.].
Contributors: Berry, B. F.; National Physical Laboratory (Great Britain)
Series: NPL acoustics report -- Ac 93
Publisher: National Physical Laboratory
Published: 1979
Place of publication: Teddington, Middlesex
Language: eng
Number of pages: 41
Subjects: Helicopters -- Noise.; Noise -- Measurement.
Notes: "December 1979."

Includes bibliographical references.