From alsa-devel-owner@alsa.jcu.cz  Mon May 18 00:19:32 1998
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Date: Mon, 18 May 1998 00:18:18 -0400
From: "smoke van c.r.a.p" <smoke@smoke.casema.net>
To: alsa-devel@jcu.cz
Subject: Re: New Sequencer core: Timing
References: <355AD2C5.7B22@ife.ee.ethz.ch> <199805172044.WAA16069@obelix.fvdpol.inter.nl.net>
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In-Reply-To: <199805172044.WAA16069@obelix.fvdpol.inter.nl.net>; from Frank van de Pol on Sun, May 17, 1998 at 10:44:37PM +0200
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On Sun, May 17, 1998 at 10:44:37PM +0200, Frank van de Pol wrote:
> Thomas Sailer wrote:
> > 
> > smoke van c.r.a.p wrote:
> > 
> > > It's great for doing hard realtiming in Linux.. have a look at
> > > http://www.rtlinux.org :)
> > 
> > Huh??? MIDI/Syn hard realtime??? Are your ears really capable
> > to resolve less than 1ms timing accuracy??
> 
> Don't think so, ears appear to be able to hear distinct notes/sounds with up
> to 10ms interval (above it it becomes a tone). For phase earse are much nore
> sensitive (also used for locating sound in stereo field).
> 
> But why are you refering to 1ms timing resolution. My (intel pentium) kernel
> uses a 100 Hz system timer, and I end up with (for userland apps) about 20ms
> timing accuracy. 

jep. this was what i was referring to. So i guess most of it has to be done
in kernelspace, and I wanted to know whether you were going to use RtLinux
or something alike (the pentium also has this instruction counter that could
be used). Other programs would like to use that timer too, so please note
that things may overlap; that is - you could break other projects currently
in development..

smoke/crap

