[widdly]

I'm building a midibox fm. I've got all the circuit and control surface built, working and sounding good but I want to add a pair of AOUT LC and a pair of filters.

I'm planning on building the EMS diode ladder filters described here.. http://www.modular.f....de/Page37.html They have CV control of cutoff AND resonance so I think they should work nicely. I'm trying to incorporate these filters so the cutoff and resonance settings are completely saved with the patch and don't require any external potentiometers.

I want to be able to tweak the cutoff and resonance from the v-pots so I figured I could remap the USER 2 v-pots to control the cutoff and resonance via the AOUT offset parameters.

In cs_menu_tables.inc at line 420 I figure I should change it to something like...

;; USER2        Register (00=dummy)        |<-->|  max   print ix,         exec ix          parameter transfer
	CS_MENU_ENTRY	MBFM_AOUTx_OFFSET,	   "Cut1", 0x7f, PRINT_AOUTxOFFS, EXEC_SELPAR,     R2PP2R_AOUTxOFFS
	CS_MENU_ENTRY	MBFM_AOUTx_OFFSET,	   "Res1", 0x7f, PRINT_AOUTxOFFS, EXEC_SELPAR,     R2PP2R_AOUTxOFFS
	CS_MENU_ENTRY	MBFM_AOUTx_OFFSET,	   "Cut2", 0x7f, PRINT_AOUTxOFFS, EXEC_SELPAR,     R2PP2R_AOUTxOFFS
	CS_MENU_ENTRY	MBFM_AOUTx_OFFSET,	   "Res2", 0x7f, PRINT_AOUTxOFFS, EXEC_SELPAR,     R2PP2R_AOUTxOFFS

...but I'm not sure if this will work as I expect. Will the v-pots control AOUT 1-4 offsets respectively or just control the same offset of whatever AOUT is selected in the AOUT menu?

Is there another way of mapping this?

This post has been edited by widdly: 03 August 2010 - 05:45

[widdly]

It looks like AOut offset is part of the ensemble not the instrument. I've found it's better to leave the offset at -63 and use the AOut depth in EG5 to sweep the filter.

[widdly]

I've also noticed what looks like a bug. The Instrument assign numbers in the AOut menu show the values 5,6,7 and 8 instead of 1,2,3 and 4.