Subject: Re: [linux-audio-dev] MIDI Clock and ALSA seq
From: Allan Klinbail (allank_AT_labyrinth.net.au)
Date: Mon Feb 17 2003 - 15:54:20 EET
Cool
So I was right... I didn't know what I was talking about..
thanks for the reply though..
Allan
On Tue, 2003-02-18 at 00:43, Steve Harris wrote:
> On Mon, Feb 17, 2003 at 11:52:56 +1100, Allan Klinbail wrote:
> > Not being a coder so you can all shout me down in flames if you like if
> > my response is misguided ..
> >
> > > Thanks, but I really wanted someting with dynamic timing. Does this queue
> > > tie me to a particular BPM? All I wanted was to be able to put the tick
> > > out every 24th of the buffer.
> >
> > Isn't the pulse of MIDI clock defined by the BPM, that's how all
> > instruments synced to MIDI clock work... I'm a little confused as to how
> > they would otherwise as BPM is the defining feature of MIDI clock....
>
> Not AFAIK. MIDI clock is just synced to bars and the receiving unit has to
> lock onto the pulses.
>
> I have a delay box that I wanted to sync to the software, its expecting 24
> MIDI clock pulses per bar and will sync to that. I dont know if midi clock
> explictly states the BPM, but I know this particular box will track
> variably timed clock pulses in any case.
>
> As it happens I just fudged it by programming the tempo manually and
> sticking to one tempo. It worked ok :) but it isn't really what I wanted.
>
> > You should be able to alter the tempo in real time and MIDI clock send
> > those changes through the system so that all machines can see that
> > change.... i.e. my delay unit with MIDI controlled delay times only
> > looks at the BPM, nothing else. Also think of 2 drum machines synced
> > together... when one slows down the other must do exactly the same.
>
> Yes, but I wanted to be able to track dynamic tempos, and I dont what to
> have to build a new queue for every bar. Also I wanted the beggining of
> the bar to line up with the beggining of the sample loop, which requires
> the pulse timing to be controlled by the player.
>
> It could be that I just misunderstood the code Takashi sent out though.
>
> - Steve
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