----- "Peter Plessas" plessas@mur.at a écrit :
colet.patrice@free.fr wrote:
now it just need to display correct db values
gem_vu ist designed to be used with the prvu~ abstraction (Musil,
yes, this object is quite usefull, in fact I meant that I need to set up the amplitude modulation for getting a correct db value with the slider, over a logaritmic scale, then the slider setting and the test signal average amplitude should have almost the same value.
IEMabs). This abstraction outputs a list with peak and rms values. The peak value gets displayed as the number in gem_vu as well as the single line within the vu meter. The rms value gets displayed by the big vu-bar.
Does this help?
yes certainly, for the moment I've found
[slider value between 0 and 1]--- [rmstodb]--[- 100] to fit almost log scale, but the need is for having 0db at height * 4 / 6, something like that
cheese, P
colet.patrice@free.fr wrote:
----- "Peter Plessas" plessas@mur.at a écrit :
colet.patrice@free.fr wrote:
now it just need to display correct db values
gem_vu ist designed to be used with the prvu~ abstraction (Musil,
yes, this object is quite usefull, in fact I meant that I need to set up the amplitude modulation for getting a correct db value with the slider, over a logaritmic scale, then the slider setting and the test signal average amplitude should have almost the same value.
Be advised that there is many ways of mapping faders to mulipliers. Depending on your practice it is common to have the 0dB (unity gain) mark somewhere 4/5 up the fader's range, which is inherited from analogue mixing desks and which I have found useful in the digital domain as well (despite the danger of clipping at the dac). The mapping of a fader's value to the actual multiplicative value is also a matter of feel (tactile). I don't know if there is much research about this topic, I personally prefer the [fadtodb] abstraction by Thomas Musil (iemabs/iemlib) which we use for our productions here at the IEM, and which to my humble opinion comes closest to the analogue desks i love.
chease,
Peter
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colet.patrice＠free.fr -
Peter Plessas