Jednotka hlučnosti

[Daniel Valuch]

google neskusil o to pokoj, ale neda mi nedodat, ze to _nie je_ decibel 
akusticky, ale to A znamena (uz spomenute) ze bolo aplikovane vahovanie 
typu A. Musime sa vyjadrovat presne :-)

dB(A), dB(B), and dB(C)

     These symbols are often used to denote the use of different 
frequency weightings, used to approximate the human ear's response to 
sound, although the measurement is still in dB (SPL). Other variations 
that may be seen are dBA or dBA. According to ANSI standards, the 
preferred usage is to write LA = x dB. Nevetheless, the units dBA and 
dB(A) are still commonly used as a shorthand for A-weighted 
measurements. Compare dBc, used in telecommunications.


Tomáš Hamouz wrote:
> MZ> Jak je prosím definovaná jednotka hlučnosti dbA?
> http://en.wikipedia.org/wiki/Decibel
> 
> Decibel akustický, tedy vážený dle citlivosti sluchu, základ je práh
> citlivosti, tedy 2×10-5 Pa.
> Vy jste ten Google ani nezkusil, že?
> 
> Tomáš
> 
> MZ> Dik
> MZ> Martin Zaruba
> 
> 
> 
> 
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