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• #8758 Speed® HARDVERAPRÓD misirulez #8757

  Új Válasz 2009-01-25 03:58:21 #8758

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  válasz misirulez #8757 üzenetére

  Wikin találsz leírást a soneról, de igazán összevetni nem fogod tudni..

  "The sone is a unit of perceived loudness after a proposal of S. Smith Stevens in 1936. In acoustics, loudness is a subjective measure of the sound pressure. One sone is equivalent to 40 phons, which is defined as the loudness of a 1 kHz tone at 40 dB SPL. The number of sones to a phon was chosen so that a doubling of the number of sones sounds to the human ear like a doubling of the loudness, which also corresponds to increasing the sound pressure level by 10 dB, or increasing the sound pressure by a factor 3.16 (= root of 10). At frequencies other than 1 kHz, the measurement in sones must be calibrated according to the frequency response of human hearing, which is of course a subjective process. The study of apparent loudness is included in the topic of psychoacoustics.

  To be fully precise, a measurement in sones must be qualified by the optional suffix G, which means that the loudness value is calculated from frequency groups, and by one of the two suffixes F (for free field) or D (for diffuse field)."

  Tehát 1 phon ~ 1 dB, 1 sone ~ 40 phon, 2 sone ~ 50 phon ~ 50 dB, stb..1kHzen..

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