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        MIDI-OX >> Mapping Questions >> Pitch to volume
        
(Message started by: Sir Raven on Dec 14^th, 2010, 4:21am)

Title: Pitch to volume
Post by Sir Raven on Dec 14^th, 2010, 4:21am

Hi,

I'm new to MIDI-OX and am trying to exchange the pitch bend data into CC#07 volume data.

Since pitch bend has a resolution of 14 bit and volume has only 7 bit the data can not be used 1:1.

The definition is:
* PitchB * * * * | 3 Ctrl 0 7 127 0

When I move the bender MIDI-OX does the following instead of changing the volume:
00183827 4 11 B2 01 3F 3 --- CC: Modulation
00183837 4 11 B2 05 3D 3 --- CC: Portamento Time
00183847 4 11 B2 03 31 3 --- Control Change
00183857 4 11 B2 03 21 3 --- Control Change
00183867 4 11 B2 04 14 3 --- CC: Foot Controller
00183877 4 11 B2 05 09 3 --- CC: Portamento Time
00183887 4 11 B2 02 01 3 --- CC: Breath
00183897 4 11 B2 07 00 3 --- CC: Volume
00183917 4 11 B2 05 09 3 --- CC: Portamento Time
00183927 4 11 B2 03 1C 3 --- Control Change
00183937 4 11 B2 04 2E 3 --- CC: Foot Controller
00183947 4 11 B2 00 3D 3 --- CC: Bank MSB

Help would be much appreciated.
Thanks.

Title: Re: Pitch to volume
Post by Peter L Jones on Dec 14^th, 2010, 1:58pm

You're currently mapping the Bend LSB to a value from 0 to 7 and using that as the CC# -- not what you want. The "Min" should also be 7.

You're also inverting the Bend MSB to Value mapping -- that might be what you want but if not, both Min and Max should be -1.

Title: Re: Pitch to volume
Post by Sir Raven on Dec 15^th, 2010, 8:49am

Brilliant, thanks! It is working ... obviously. Now my map looks like this:

Ch Message V1Min V1Max V2Min V2Max C|Ch Message V1Min V1Max V2Min V2Max Ac
* NoteOn * * * * Y| 2 NoteOn * * * *
* NoteOn * * * * Y| 3 NoteOn * * * *
* NoteOn * * * * Y| 4 NoteOn * * * *
* NoteOff * * * * Y| 2 NoteOff * * * *
* NoteOff * * * * Y| 3 NoteOff * * * *
* NoteOff * * * * Y| 4 NoteOff * * * *
* Ctrl 1 1 * * Y| 2 Ctrl 7 7 63 0
* Ctrl 1 1 * * | 1 Ctrl 7 7 63 127
* Ctrl 2 2 * * Y| 2 Ctrl 7 7 63 127
* Ctrl 2 2 * * | 1 Ctrl 7 7 63 0
* PitchB * * * * Y| 3 Ctrl 7 7 127 0
* PitchB * * * * | 4 Ctrl 7 7 0 127

Now I can use the joystick of my Triton as vector stick such as in old vector synthesizers like Yamaha SY22. And of course I can influence not only the volume but some more interesting parameters as well.