Topic: fader gain value map

Does anyone know if there is a simple formula for converting 16-bit fader values to fader gain (dB) in TotalMix? The same question applies to MIDI control of fader gain (14-bit pitch bends or 7-bit control changes), but I assume that those are a simple task of multiplying the MIDI value by 2^2 or 2^9 and then applying the same 16-bit conversion. On the RME website (http://www.rme-audio.de/en_support_tech … x_hardware), it just says "Faders: 16-Bit resolution, equals 65536 steps, which are provided following a special function for correct perception." The "special function" appears to be approximately logarithmic (as it should be), but isn't exactly logarithmic. I am trying to make a software function that will control the mixer gain via MIDI for controlling output levels for auditory experiments, and this special function would make that a lot easier. I would appreciate any info that you can provide.
Thanks
-Eric

Re: fader gain value map

Bump. Is there any information on this? Is anyone from RME tech support active on here? I tried emailing RME tech support directly and similarly got no response...

3

Re: fader gain value map

We are not willing to give out internal information like this one, sorry.

Regards
Matthias Carstens
RME

Re: fader gain value map

Thanks for the response, Matthias. That is fair enough. I guess I will have to spend some time making a lookup table...