BS 3383(1961) : LATEST被替代
NORMAL EQUAL LOUDNESS CONTOURS FOR PURE TONES AND NORMAL THRESHOLD OF HEARING UNDER FREE FIELD LISTENING CONDITIONS
出版：British Standards Institution
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基本信息
标准编号： BS 3383(1961) : LATEST
标准类别：Standard
出版单位：British Standards Institution
标准页数：0
标准简介
Deals with links between sound pressure level and frequency for pure tones of equal loudness,and values for hearing threshold.Relevant for those with normal hearing aged between 18 and 25,and gives correction formulae for those with normal hearing aged up to 60. Covers frequency range 20 to 15 000 c/s under given conditions. Technically equivalent to ISO 226
