MB_NG and CV, full 14bit accuracy

[Zam]

Hi all

I just want to share a setup and configuration to send full 13 or 14bit CV voltage

For a side project (not fully related to audio) I came across a simple way to perform this

I use a AOUT_NG, and hook a summing amp at output

you need to sum 2 out for 13 bit, or 4 out for 14bit

then it's just need map split at NGC.

like this (for 14bit) each CV take care of a quarter:

MAP11/HWORDI \
0:0 \
16383:65535 \
65535:65535

MAP12/HWORDI \
0:0 \
16383:0 \
32767:65535 \
65535:65535

MAP13/HWORDI \
0:0 \
32767:0 \
49151:65535 \
65535:65535

MAP14/HWORDI \
0:0 \
49151:0 \
65535:65535

EVENT_CV  hw_id=1  id=1    type=PitchBend  chn=1  range=map11  value=0 ports=10000000000000000000
EVENT_CV  hw_id=2  id=2    type=PitchBend  chn=1  range=map12  value=0 ports=10000000000000000000
EVENT_CV  hw_id=3  id=3    type=PitchBend  chn=1  range=map13  value=0 ports=10000000000000000000
EVENT_CV  hw_id=4  id=4    type=PitchBend  chn=1  range=map14  value=0 ports=10000000000000000000

Side note:

-increasing definition will give you less output as you see

-you need a good layout and proper grounding/0v reference, for a 0-5V CV (my use case) the step is 300uV !!!

 

Best

Zam

 

Edited November 19, 2017 by Zam