Arp Sustain with Sustain Pedal

Casey Kolb

Easy! Thanks

Lindon

@Lunacy-Audio NO!!!!!!!!!!!!!!! - honestly I've spent hours and hours and hours on this - and the Arp is NOT consistent... I have come ot the conclusion that the only REAL way to do this is to build your own arp...

Christoph Hart

Ignoring the note offs will result in the arp playing forever, but it‘s a legit request to make the sustain pedal hold the sequence (at least as an option)

Lindon

@Christoph-Hart said in Arp Sustain with Sustain Pedal:

Ignoring the note offs will result in the arp playing forever, but it‘s a legit request to make the sustain pedal hold the sequence (at least as an option)

yes it is - but if you have a Hold Button in your UI - to offer the same approach but not use the sustain pedal then it gets very messy- very quickly.

Christoph Hart

Alright, I've committed a few changes to the arpeggiator:

Cleaned up the UI and added labels to the dreaded MIDI filter boxes on the bottom
Added a Sus button that will hold the arp sequence if you press down the pedal
Removed the inconsistencies with the MIDI filtering.

This should fix every issue so far.

but if you have a Hold Button in your UI - to offer the same approach but not use the sustain pedal then it gets very messy- very quickly.

Just send out artificial sustain pedal commands in the UI callback then...

Lindon

@Christoph-Hart said in Arp Sustain with Sustain Pedal:

This should fix every issue so far.

Nearly------ I just need a way to have MIDI Thru implemented: by this I mean a way to have the original notes either play or not AND for them to behave as they would when the arp is off so;

Where arp is on and sus is on, and Thru is on.

User presses a chord - the chord sounds normally - and the arp starts to play the chord.
User release the chord - chord stops playing - but the arp keeps playing (until sus is released)

Where arp is on and sus is on and thru is OFF

User presses a chord - the arp starts playing - but nothing else
User releases the chord - arp keeps playing until sus is released.

Christoph Hart

Yes, that can be done using the MIDI filtering: if the input and output MIDI channel is equal, it will not play the actual notes the user pressed. If you select another MIDI channel for output than input, it will play both notes (the user pressed ones and the arpeggiated notes).

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Swap the output channel to "Use input channel" or "Channel 2" to hear the effect.

Lindon

@Christoph-Hart ok going away to give it a try...

Lindon

@Christoph-Hart - nope that makes absolutely no difference here.

Set the input channel = 1 and the output channel = 1

play a chord - and it sounds and the arp runs

Set the input channel = 1 and the output channel = 2

play a chord - and it sounds and the arp runs

Pehaps I'm missing which combo box I should be setting to what...

But even your snippet doesnt work properly - when I press a chord it sounds on the first step.

Yeah its a mess here.... it works 1 time in 10...

Christoph Hart

Please check that you're using the new version. The arp should look like this:

The old version does exactly what you describe, but the new one works as it should.

Christoph Hart

Just FYI, I've committed another fix to the hold behaviour: the hold is now activated as soon as you press the hold button. This is indeed a bit cleaner (it can now be connected to a UI button or something else without messing around with an artificial sustain pedal message (which might interfere with other things).

If you want the "original" sustain pedal behaviour, just set the Arpeggiator.Hold attribute in the onController callback of any script:

function onController()
{
    if(Message.getControllerNumber() == 64)
        Arpeggiator1.setAttribute(Arpeggiator1.Hold, Message.getControllerValue() > 64);
}

Lindon

@Christoph-Hart -- oh no and I just downloaded and installed the latest version to get to this point ---dman... ok doing it again.

Casey Kolb

Nice one! Thanks Christoph.

Casey Kolb

@Christoph-Hart While we're in Arp land, is there any chance we could add two simple things? If it's too tricky, don't sweat it.

Chord pattern – All held notes play every timer cycle (this is super useful, people love this). I have my own separate iteration but it'd be nice if it were just part of the arp.
Instant release – rather than playing the full duration of the arp rate, the note would immediately tail off with a NoteOff. At the moment, the note will continue playing which can feel a bit awkward with slower arp rates. Perhaps there's a way to achieve this without changing the arp?

Lindon

@Lunacy-Audio - well if we are asking for additional features (Lindon pushes his luck..)

It would be nice if there was an option to reset(clear) hold mode on a non-legato note...so:

Turn on hold
play a chord (arp starts to play)
release chord (arp still plays - hold mode working correctly)
press another chord (arp stops playing the first chord and starts playing the second chord)
release the 2nd chord (arp keeps playing)
rinse and repeat...

Christoph Hart

It would be nice if there was an option to reset(clear) hold mode on a non-legato note...so:

You can script that already:

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However you need to think about how to stop that thingie because it will go on forever now (all you need to do is to call Arpeggiator.1.setAttribute(Arpeggiator1.Hold, false) at some point.

Lindon

@Christoph-Hart - strange I was trying to script it and toggling the hold in the same call back - and it fails - you just get clicks - but I think thats because I wasnt testing

thisTime - lastNoteOff > 0.1

still - thanks for this...

Christoph Hart

Breaking news from ARP Land:

added chord mode
send note off when sequence is stopped

The last one actually required a minor change to the event ID system, which might have some use cases apart from this: Before the change, as soon as you called Synth.noteOffByEventId(), the event ID is popped from the active note stack and a note-off is inserted into the temporary buffer of that MIDI processor waiting to be processed according to its timestamp (after each buffer the buffer size is being subtracted from the time stamp as as soon the timestamp is in the range 0-buffersize it will be processed). However there was no possibility of changing the length of a note once it has been terminated with this API call (which is why the notes keep playing in their original length in the arp).

The change I did is rather subtle and it can't break existing behaviour, but now you can just call Synth.noteOffByEventId() again and if it can't find the note on (because it was already popped from the note stack), it will search in the temporary buffer of that same MIDI processor and if there is a note-off waiting to happen there, it just modifies the timestamp and thus changing the length of the note.

Note that if you called the noteOffByEventID() method before this change on a already killed note, it will fire the NoteOff with event ID X not found error, which is still the case, but only if there is no note off in the temporary buffer.

Lindon

except this is also broken in some way --- the hold button wont turn off programatically - well it will but the arp just keeps playing...

Lindon

..and now its decided to ignore the glide script I added - except where I turn off the arp - play some notes- they glide - then turn ON the arp - and it glides correctly.

Im reaching the point where I think the model of note behaviours is not flexible enough to accommodate some reasonable requirements - like an arp thats even just a bit above basic - and glide scripts..

-- so apparently I MUST have midi thru (different input and output channels in the arp) to get glide to work...

Arp Sustain with Sustain Pedal

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