[sdiy] MIDI volume to volts formula

MTG grant at musictechnologiesgroup.com
Fri Jun 8 05:02:53 CEST 2018

If you are lucky. The DX7, for instance, divided the incoming velocity 
by 4 and only dealt with 32 values each way (over MIDI). Spread over the 
whole range obviously. I'm sure some more modern synths have the 
complete range, at least this original "low resolution" version. We 
await your histograms Brian.

On 6/7/2018 7:28 PM, rsdio at audiobanshee.com wrote:

> On a related note, when mapping an input range of 128 values to an output range of 128 values, the only function that actually produces 128 unique values is the linear 1:1 mapping. This assumes we’re not using real, floating point numbers because MIDI is discrete integer values. Every other map or curve will not actually produce 127 different velocity values on output.
> Perhaps Yamaha decided to use a curve that would have only produced 100 distinct outputs anyway.

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