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Topics - prephylve1

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PreenFM2 / Arp MIDI CC NRPN Bug 2.08b Xavier & lokki OS's [Fixed in 2.09]
« on: September 08, 2018, 04:00:46 AM »
I'm programming a preset for the Behringer BCR2000. Some of the following also occurs while using the PFM2 Editor.

Sending sending NRPN and CC values for the Arp CLK parameter makes some parameters disappear from the page when all Arp parameters are being controlled with NRPN's.

Sending either NRPN and CC values for the Arp CLK will change the Arp BPM one increment at a time and change the Arp Direction to it's highest value.

Even stranger still, when I send NRPN and CC values for Division and Duration while still on the first arp page I get a garbled mess.

Will sometimes crash as well.

I've double checked the parameter's are not being sent values beyond their limit.

I've attached images below.

PreenFM2 / TX81z W1-W8 + Feedback Waveforms .txt Download
« on: November 18, 2017, 01:58:12 AM »
Many people have asked for feedback as an option and compared the PFM2 to Yamaha synths like the TX81z. While this is a completely different instrument I thought it might be interesting to add waveforms from the TX81z and varying feedback levels for each waveform. This took a very long time to get right. Considering the TX waveforms are 4096 samples and the PFM2 has a max 1024 samples they aren't 1:1 but sound basically the same.

The feedback levels only start getting interesting at higher levels. Looking at the waveforms in an oscilloscope I noticed feedback acts a little like a wavefolder + distortion. The highest feedback level without distortion  is level 5. I've included 3 versions of the waveforms. One set without feedback, another set at level 5 feedback, and a final set at level 7 feedback.

Each waveform was recorded in Reaper at 48k 24bit around 46.87hz or F#1 tuned sharp. One cycle at that frequency gives you exactly 1024 samples. I had to fix one of the waveforms at feedback level 7 because it was incredibly unstable and would not stay in tune. Very analog like!

All waveforms are included in the zip file with images that show each waveform.

Enjoy!  8)

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