dB-based (-70. dB to 6. dB) gain control without GUI?

Mar 28 2017 | 8:25 am

Hi, I am using live.gain~ to adjust the loudness of audio signal with dB. Has anyone implemented the dB functionality (silence, -70. dB to 6. dB) of live.gain~ without GUI? Perhaps the combination of 'scale -70. 6. 0. 157.' and 'gain~' is the simplest solution...? I am optimising my patch.

Thanks a lot, Masa

geoscle
Mar 28 2017 | 8:40 am
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Stephane Morisse
Mar 28 2017 | 12:52 pm
As far as I know, the above solution, even if it is correct, won't reflect the values output by live.gain. I had a very hard time trying to get this using expressions or that kind of stuff and never got a clear answer by Ableton about their scaling, even for internal live mixer. The closer solution used an array of values. I'm going to try to find it...
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Christopher Dobrian
Mar 28 2017 | 4:01 pm
I think it's something more like this. (I.e., if gain value is less than -70 dB, set gain to 0.)
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Masa
Mar 29 2017 | 3:14 pm
Hi, thank you very much Franz, Stephane and Christopher for your smart input. OK, then I will replace all my live.gain~s with Christopher's approach and see if it reduces CPU usage.
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Masa
Mar 30 2017 | 5:57 pm
I modified Christopher's patch, as live.gain~ mutes the signal when equals to -70.
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Masa
Mar 31 2017 | 7:55 am
As Stephane noted, when trying fading out with gain value, live.gain~ sounds smoother than my patch above. I am not sure why.
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