BS 3383:1961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
发布时间：1961/5/19 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：0
标准简介
Frequency range 20 to 15 000 c/s, under stated conditions, relations between sound pressure level and frequency for pure-tones of equal loudness, values for threshold of hearing. For otologically normal persons aged 18 to 25. Correction formulae for otologically normal persons up to 60 years.
标准备注
© British Standards Institution 2013
