[Solved] Filter problem with SID V2

[Ixox]

Hi Thorsten and all,

I'm upgrading my old SID V1 to a stereo V2.
I upgraded the PIC, remove the useless LCD data connection,  and added the 1k pull-up to the CAN receive input.

Almost everything works, sound, stereo etc...
But I have a problem with the filter that only works when i play short notes.
If a note lasts more than around 0.5s, the filter is disabled and stop working for all new notes.
It works again if i modify it's style (Low/Band/High) or if i load a new preset.
Then again, it's being disabled when i play a "long" note.

This exact behaviour is the same for both the SID modules i have.
And the filters are disabled at the same time on each SID module in stereo mode.

The filters of my 2 SID modules work perfectly with SID V1 if i put back my old PIC 18F452.

Any idea ?

Best,

Xavier

EDIT : aditional info : Core R4C and SID : R3. MIOS 1.9h, Firmware 2.0.44.

 

Edited March 6, 2016 by Ixox

[Ixox]

Update :

I inserted a midi monitor between my keyboard and the SID.
Seems like the firmware does not like at all the Aftertouch midi information that my keyboard send 0.5s after the begning of the note if we hold the pressure. This aftertouch midi data kills the filter.

I tried with a keyboard without aftertouch and it's working fine.

Anything to do to fix that ?

Edited March 6, 2016 by Ixox

[Hawkeye]

Are you using a standard init patch on the MIDIbox V2?

MBSID V2 allows free controller assignments to velocity, modwheel and aftertouch, maybe it is somehow connected to the filter?

Can you load up the standard MBSID V2 patch bank and experiment with different patches? Does it happen everywhere?

Many greets,

Peter

[Ixox]

Thanks Peter for your reply.

My keyboard for any reason was sending CC#8 with aftertouch which is interpreted as Filter Channel value by the firmware.
As the last value is always 0, it actually disabled the filter for all voice.

I modify the aftertouch CC of my keyboard and it's now working perfectly !

Xavier