Subject: Re: [linux-audio-dev] midi events in jack callback (was: Reborn)
From: Paul Davis (pbd_AT_op.net)
Date: Fri Aug 16 2002 - 21:16:43 EEST
>> >using my drum machine or hard disk recorder as the clock source.
>>
>> these devices provide a very low resolution clock, and it can't be
>> used to schedule MIDI data, only to provide a low resolution
>> positional reference.
>
> 24ppq is fine when your sequencer only schedules notes on 24ppq
>boundaries. :)
>
> You're right though, I badly need hard timers, but my point was that
>an 8192hz clock isn't so bad if you only use it for events which are
running the RTC at 8kHz causes very appreciable system load. thats why
the hard/firm timers patch is so much better: interrupts generated
when needed, instead of continuously.
>unaligned on 24ppq boundaries. Otherwise, I have to trust the MIDI
>clock for audio too, or my drumroll will stutter when I turn the tempo
>knob while playing.
assuming you *have* MIDI clock :) i need to add this to the TODO list
for Ardour. since it has tempo information, it can output this too.
--p
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