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On Tue, Sep 25, 2007 at 09:21:06AM +0200, Alexandre Ratchov wrote:
> On Mon, Sep 24, 2007 at 07:00:38PM -0700, Ken Restivo wrote:
> >
> > Is there any command-line tool to extract and print the tempo of
> > a MIDI file?
> >
>
> hi,
>
> you could use midish for that: import the .mid file, and use the
> songtimeinfo function; example:
>
> $ rmidish
> send EOF character (control-D) to quit
> 1> songimportsmf "sample.mid"
> 2> songtimeinfo
> {
> timesig 4 24
> tempo 400000
> }
> 3>
>
Thanks! However, I haven't found any explanation of what those numbers mean. I need the tempo in BPM.
I found this formula in the Rosegarden source:
qpm = (60.0 * beatTime) / (beatSec * quarter)
But of the three numbers that songtimeinfo spits out, I haven't been able to figure out which one is beatTime, beatSec, and quarter.
- -ken
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