Simple note delay

Pretty simple:

NX = XX +D500

will delay all notes (on and off) by 500ms. Obviously you can change the 500 to whatever suits you!

Regards, Nic.

Hi ralph ,

To delay just note on messages you would change the rule as follows:

9X XX 01-7F = XX +D500

However, your second part is a bit more complex and you would need to replace that simple rule with some logic for handling that.

Regards, Nic.

No, I don't remember anyone! But here is how I would approach it.

First you want to maintain a timeline in ms as each note on/off comes in. This will keep the current timeline in L80 and each event is given a timestamp in ms:

if MT < A0
  calc L80 = L80 + T0

  # L80 will contain the timestamp
  # for this note off/on
end

Be aware that L80 will go up to about 65K ms and then cycle back to zero. Your logic will need to cater for this.
 
Then you need to keep track of each currently sounding note's expiry time. Because you want to be able to do this for any note on any MIDI channel, we need to use the 'W' array to store expiry times indexed by channel+note number. Something like this (inside that if clause above):

  # calculate index into W array into I0
  calc I0 = $128 * MC
  calc I0 = I0 + M1

  if MT == 90
    # store expiry time
    calc WI0 = L80 + K0

    # delay the note on
    send M0 M1 M2 +DK0
    block
  end

then when you get a note off before the expiry time, set the expiry time to 0 (hopefully that won't occur naturally)
again inside that 1st if clause

  if MT == 80
    assign WI0 = 0
  end

finally, modify the IF MT == 90 clause so that it only does the send/block bit if WI0 is not zero.

Something like that. There could be a smarter way.

Regards, Nic.

This is a very different, but interesting question.  Please start a new thread, and I will reply with some ideas.