[gmpi] Re: Topic 6: Time representation
- From: "Paul Kellett" <paul.kellett@xxxxxxxxxxx>
- To: <gmpi@xxxxxxxxxxxxx>
- Date: Tue, 29 Apr 2003 15:58:33 +0200
> Is musical time really needed apart from using MIDI clock
> messages to do tempo based effects?
Some plug-ins don't just sync to the tempo, but trigger events
relative to the bars and beats of the song. So they also need
to know the time signature and a reference point from which the
current musical time can be calculated.
> You'd also need to enable the plugin to access the tempo map for
> absolute musical time to be useful (or at least the time of the
> last tempo change and the tempo).
If the tempo is being adjusted live there may not be a tempo map.
But yes, you need a certain amount of information to be able to
work out what the musical time is, or if the host knows it should
just pass this information on to the plug-in so whatever
inaccuracies there may be in calculating time information, at
least plug-ins stay in sync with the host and with each other.
Paul.
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