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RE: [analogue-sequencer] ppqn resolution query

2005-11-20 by Colin f

> >Just a query, seeing that the P3' resolution is 48ppqn,
> >is a higher resolution possible ?

> A higher resolution would only have any meaning for a MIDI 
> recorder such 
> as Cubase -  but not a step sequencer which, by its very nature, is 
> quantised.

A much higher resolution with MIDI doesn't really make sense.
A MIDI note message takes roughly 1ms to send.
At 120 bpm, 48 ppqn clock ticks are roughly 10ms apart, so if you send 6
note messages on one clock tick, all on different MIDI channels so each
message takes 1ms, the last of those 6 note messages is going to reach its
destination closer in time to the next tick than the one it supposedly
occured on.
In practice this isn't as bad as it sounds, because humans can't resolve
timing variations much less than 5 ms anyway.
But it means that increasing your timing resolution over 48ppqn is just
going to mean your note messages are more ticks late than they would have
been if you'd had fewer ticks. ;-)

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

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