Question/Poll on dB-calculation

Arnold Krille arnold at
Sat Jul 26 17:43:19 BST 2003

Hi everybody,

I ran into an acoustic problem:

There are two formulars for calculating dB<->amplification_value:
First one can use the formular for the absolut soundlevel db = 10*lg( amp ).
The second is for absolut soundpressure db = 20*lg( amp ).

With the first +3dB means an amplification by 2, with the later ampfactor of 2 
would be +6dB.

As I am currently at some aRts-widgets with dB-abilities, at artscontrol and 
am having some discussions with Benedikt Gollatz at 
(, I just want to ask some experts 
/ start a user(/developer) poll which value to use.

But I want only one of these formulars for whole aRts...


Get my public-key from or
Hi, I am a .signature virus. Please copy me into your ~/.signature and send me 
to all your contacts.
After a month or so log in as root and do a rm / -rf. Or ask your 
administrator to do so...
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