Re: [linux-audio-dev] Utility for recording audio track with midiclock

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Subject: Re: [linux-audio-dev] Utility for recording audio track with midiclock
From: Gerrit Niestijl (g.niestijl_AT_rijndam.nl)
Date: Thu Jul 01 2004 - 18:05:19 EEST

"Tim Goetze" <tim_AT_quitte.de> writes:
> fwiw, i'm achieving quite satisfying results driving MIDI out from a
> 1024 Hz RTC thread, with external hardware locking steadily onto the
> output MIDI clock stream, even at tempi up to 240 bpm.
>
> MIDI out jitter is about the audio block size at max. DSP load (~1.3
> ms) during audio processing cycles, a fraction of a millisecond for
> the difference between 1024 Hz and the wanted MIDI clock frequency
> otherwise; however this seems to be no problem for the hardware
> attached (a fairly recent synthesizer and infrequently an aging cheap
> drum machine).
>
> at lower RTC frequencies, the jitter effect on the MIDI h/w becomes
> noticeable (erratic rubato) but it still locks on.
>
> thus, i must disagree with your 'no way'.

Could you point me to some code examples on how you do this? I am an
absolute beginner in this. 

--
gerrit

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