Re: midi re-tempoizer

[email protected] (Jean-Pierre Vidal) Fri, 10 Dec 2004 17:10:00 +0000
Newsgroups perl.midi
Message-ID <[email protected]>
Le vendredi 10 D=E9cembre 2004 10:42, zentara a =E9crit=A0:
> On Thu, 9 Dec 2004 22:00:41 +0000, [email protected] (Jean-Pierre
> Vidal) wrote:
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> >Le jeudi 9 D=E9cembre 2004 11:08, zentara a =E9crit=A0:
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> >> Your script runs without error for me, and on some midi
> >> files gives the correct time.=20
> >>=20
> >> But I often get
> >> 0 mn 0.0 s
> >> as output.
> >>=20
> >> From a quick check of differences between files that work, and
> >> those that give  0 0, it seems the problem is with midi files that
> >> have NO 'set_tempo' in them.
> >> I put a print in to test various files
> >>      for my $note (@$score_r) {
> >>               if($$note[0] eq 'set_tempo'){print $$note[0],"\n"}
> >>=20
> >> and if it had no set_tempo, I get  0 0 output.
> >>=20
> >> So maybe set a default tempo?
> >
> >You are the winner!
> >Obviously :-(, according to MIDI specs, "If there are no tempo events in=
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> >MIDI file, then the tempo is assumed to be 120 BPM".
> >This is 120 quarter note per mn, or 0.5 s per quarter note.
> >So we need to initialize $tempo =3D .5; instead of $tempo =3D 0; (line 3=
0) and=20
all=20
> >will work right.
> >
> >RTFM: read the specs, read the specs,  read the specs, :-)
> >Jean-Pierre
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> That's great!  By the way, are you are perlmonk?
> http://perlmonks.org

no, I am not.

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>  If not, would you mind if I post it there, with your name
> on it of course.
> It is a sought after utility. :-)

Of course, this utility is distributed "as is", and under the terms of perl=
=20
itself. So, you can post it, with or without my name.

Jean-Pierre

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> zentara
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> --=20
> I'm not really a human, but I play one on earth.
> http://zentara.net/japh.html
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