Talk:Absolute threshold of hearing
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Merged threshold of hearing and threshold of pain into this article.
That was no good idea, sorry! It goes wrong when you go to other languages.
Zara 15 Oct, 2005
The statement "Prolonged exposure to sound pressure levels in excess of the threshold of pain can cause physical damage" is incorrect, as it has been proved that prolonged exposure to much lower pressure levels (already from 90 dB, and probably below) are enough to damage our hearing!
Xenomorph [DNS-Studios], 11 Nov 2005
- Perhaps "Prolonged exposure to sound pressure levels that cause temporary threshold shift can cause physical damage" is the appropriate phrasing. It looks like we need an article on temporary threshold shift. Wesley R. Elsberry 05:39, 10 April 2006 (UTC)
[edit] dBSPL is wrong
Other sites using the "dB re" formalism: Oceans of Noise (explicit in defining SPL and SIL in terms of "dB re"), SURTASS LFA, NIST listing SPL in terms of "dB re", and Acoustic Impacts on Marine Mammals. But the best thing I've found has to be ASACOS Rules for Preparation of American National Standards in ACOUSTICS, MECHANICAL VIBRATION AND SHOCK, BIOACOUSTICS, and NOISE, which states:
3.16 Unit symbols 3.16.1 When to use unit symbols In the text of the standard, the unit symbol for a quantity shall be used only when the unit is preceded by a numeral. When the unit is not preceded by a numeral, spell out the name of the unit. In text, even when a numerical value is given, it is desirable to spell out the name of the unit. Moreover, the name shall be spelled out when it first appears in the text, and more often if the text is lengthy. Thus, in text write "...a sound pressure level of 73 dB; or "...a sound pressure level of 73 decibels." Do not write "sound pressure level in dB"; the correct form is "sound pressure level in decibels." Do not write "dB levels", "dB readings", or "dB SPL." Levels or readings are not of decibels; they are of sound pressure levels or some other acoustical quantity. Write out the word "decibel" for such applications, and be sure that the word 'decibel' follows, not precedes the description of the relevant acoustical quantity.
The guidelines given for the National Standards clearly excludes the use of "dB SPL". Wesley R. Elsberry 17:08, 9 April 2006 (UTC)
[edit] Threshold of pain table
Is there a reason that some of the data on the threshold of pain table is bold? I would have edited for consistancy if there was no reason for it.
- I assume they are specific standards, etc. I asked that references be added for each value. — Omegatron 12:56, 30 July 2006 (UTC)
[edit] Sound Frequency in speech
I read here: http://www.smeter.net/daily-facts/4/fact2.php
That the "Average male voice audio spectrum power peaks near 500 Hz." Looking at the threshold chart it starts at 1000Hz. Am I mistaken or shouldn't that chart have measurements below 1000Hz to take into account the human voice spectrum? —Preceding unsigned comment added by 219.165.124.110 (talk) 07:04, 10 December 2007 (UTC)
