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Tracked down the arpeggiator interval bug

2002-06-03 by Nick Rothwell

This one now looks repeatable.

When a preset is first loaded, it always gets an extension interval of
1, regardless of what it's supposed to have. When a new preset is
selected manually or by program change, it picks up the extension
interval OF THE PREVIOUS PRESET ON THAT CHANNEL. In other words,
extension interval is loaded from the old preset in the channel, not
the one being selected.

This was verging on being a show-stopper - after all, what use is an
arpeggiator that can't stay in tune? - but the work-round appears to
be to double-up program changes. Even so, this one is so in-your-face
that I'm rather amazed it wasn't spotted earlier.

This leaves one show-stopper: stuck notes in the sequencer, again
repeatable. It seems to be a problem with presets using a delayed
arpeggiation - if the sequencer is stopped at a certain point in the
arpeggiation cycle, the note sticks, and can only by cleared by
power-cycling. This renders the arpeggiator unusable when sequencing
(and I'm probably going to have to resort to external sequencing to
try and work round it).

-- 

  nick rothwell -- composition, systems, performance -- http://www.cassiel.com
  upcoming gig at cybersonica, london, june 5th  -- http://www.cybersonica.org

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