ciao
the [dbtorms] works quit correct afaik. actually, +6dB means a doubling of the amplitude. at 48dB (in a scale from 0 to 100dB) your signal has an amplitude of around 1/(2^6)=0.02, wich is quite quiet. on one hand we have a linear scale, where on the upper half happens almost nothing, and in the lower half it is quit difficult to adjust the volume precisely. on the other hand we have the logarithmic scale, where it is difficult too to adjust the volume, because the signal raises quite much in a very small area. i prefer using the 'square' scale, wich is something like a combination of these two:
[inlet~] | | [slider 0 -1 ] | | | [t f f] | | | | [* ] | | [*~] | [outlet~]
i always use this in order to adjust volumes.
cheers roman
----- Original Message ----- From: "Stefan Turner" stefan_turner@yahoo.co.uk To: pd-list@iem.at Sent: Monday, February 28, 2005 5:38 PM Subject: [PD] dbtorms amplitude scaling sounds wrong
Hi list,
I'm using dbtorms for amplitude control as follows:
signal in volume (0 to 100dB) | | | [dbtorms] | | | [$1 50< | | | [line~] | / [*~] | [dac~]
This is AFAIK the correct way to use it. The problem is, the amplitude scaling doesn't sound right to my ears. 100dB is the loudest and 0dB is silence all right, but 50dB is extremely quiet. I thought that dB in this case are supposed to represent 'loudness', so 50dB should sound half as loud as 100dB? To me 'halfway' seems to be somewhere between 80dB and 85dB. Is it my patch or my ears?
Thanks
Stefan Turner
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