Abstract
ON September 10, in Section G (Engineering) of the British Association meeting at Aberdeen, Sir Henry Fowler presented, as chairman, the report of the Committee on Reduction of Noise, and thus introduced a series of papers on the subject. This Committee has analysed a large number of letters from members of the public concerning the noises which cause them most discomfort and incon venience, and has reached the conclusion that the sources which cause most annoyance are, in turn, inadequately silenced mot or-bicycles and ‘sports’-type motor-cars, motor-horns, other road transport noises and aircraft. No other cause produces half the complaint levelled against the latter source. Realising that the Air Ministry is doing everything possible to reduce aircraft noise, the Committee has devoted its attention first to the exhaust noises of mo tor-bicycles and sports-cars and, with the help of a donation of £50 from Lord Wakefield, an in vestigation of silencers was carried out at University College, Southampton. In order to assist in the establishment of an authority to which types of motor-vehicle could be submitted for test of approved silence, the Committee arranged for a critical review of the methods available for measuring noise, par ticularly noises of a given type, such as exhaust noises. Arrangements were also made for a firm manufacturing motor-horns to give a paper examin ing characteristics which render a signal effective as well as those which cause it to be offensive.
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D., A. Reduction of Traffic Noise. Nature 134, 633 (1934). https://doi.org/10.1038/134633a0
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DOI: https://doi.org/10.1038/134633a0