Ivory on Receptor - some hiss and sizzle

[mrhudson]

Good evening,

I installed Ivory on my Receptor Pro 2 Max a little while ago and am driving it right now with a KAWAI CA 750 digital piano via MIDI. Finally getting some time to set it up in my newly set up basement studio.

If I just call up one of the presets - like distant Concert D10 right now - and play it without any sustain pedal at all, sounds splendid. I can smear up and down the keyboard without any noticeable sound artifacts of any kind. However, as soon as I start playing with the sustain pedal engaged, then I start getting intermittent hiss or crackles or pops or fuzzies, etc.

There is nothing in the CPU usage meter to suggest any issues. Just seems to be a specific interaction between the sustain pedal and playing. I am best able to recreate the effect when I RELEASE the sustain pedal. For example, I just played a Cmaj chord at middleC with sustain on, released the sustain pedal very slowly, and, on release, the sound buzzed or broke up somewhat. This is the sound that is getting layered in while I am playing. With the sustain pedal off, no such issue at all.

No such issue with Akoustik, by comparison.

Here's another tidbit - If I HOLD the keys down, and press/release/press/release/press/release the sustain pedal, the issue is not there. It ONLY occurs when I press the chord, remove keys from keyboard, then release the sustain pedal. Does that point to the release samples in some way? Some kind of interaction between that and the sustain pedal implementation on this keyboard?

[mrhudson]

To complete the diagnostic, just realized that I can turn off the release samples - and, guess what? Problem goes away. So, my diagnostic hunch was correct. Now, how to fix?

Maybe half-pedaling is the issue?

[Rick@MuseResearch]

I have someone trying this on a Mac to see if it's a unique problem on Receptor. If anyone already has Ivory on windows it would be good to see if this issue can be duplicated there as well.

[mrhudson]

Its funny - no issues with an older kurzweil sp88 with a standard on/off sustain pedal. And, the KAWAI CA750 works fine with the release samples turned off.

I did contact Synthogy, sent them the midi being created by the KAWAI, and they are going to try to replicate what I am hearing from that MIDI file. They will report back, and I'll share what they find.

I suspect that Receptor is generally fine - I can play it perfectly (sounds great) with the Kurzweil. And, you would think that continuous MIDI from a sustain pedal would be no issue for the Receptor - other continuous controllers are used all the time.

I'll report back on what Synthogy finds. It may just be that my KAWAI sustain pedal is acting goofy/broken - it is an older keyboard. I was just excited to use it again, action isn't bad, and it had been idle for some time.

Thanks for the help....

[Rick@MuseResearch]

Test on Mac worked as designed. Based on your last posting I would open your MIDI file under an Event editor. CC64 is sustain, maybe the difference would be the 0 to 127 data curve when you release the pedal.