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- 01-02-2004, 10:43 PM #1Carl.Guest
Now and then I find a MIDI that won't play properly on my phone, even when
the number of tracks are reduced to just a few (usually gets stuck on a note
and then speeds up).
To resolve this, I used PSMplay to convert a MIDI to 40 chord .mmf and back
again. I checked and the resulting file had all of the original notes. It
also plays just fine.
But the new file is only 4k, while the original was 13k. What was removed?
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› See More: Very big file size reduction when converting MIDI to mmf
- 01-18-2004, 08:43 PM #2JuttaGuest
Re: Very big file size reduction when converting MIDI to mmf
Very Briefly,
Many MIDI files contains a LOT of information
that gets deleted upon conversion to .mmf
For instance, channel aftertouch, pitchbend (very common),
polyphonic aftertouch (less common). And let me tell
you, even the first two can generate amounts of data
that dwarf the note-#-on-and-offs that you're left with.
That's a pretty simply explanation. Rock On!
Jutta
On 02 Jan 2004, you wrote in alt.cellular.ericsson:
> Now and then I find a MIDI that won't play properly on my phone, even
> when the number of tracks are reduced to just a few (usually gets
> stuck on a note and then speeds up).
>
> To resolve this, I used PSMplay to convert a MIDI to 40 chord .mmf and
> back again. I checked and the resulting file had all of the original
> notes. It also plays just fine.
>
> But the new file is only 4k, while the original was 13k. What was
> removed?
- 01-19-2004, 12:06 AM #3Carl.Guest
Re: Very big file size reduction when converting MIDI to mmf
Thanks for the info. I later noticed on other files that the pitch bend
effects were gone.
What is a channel aftertouch?
"Jutta" <[email protected]> wrote in message
news:[email protected]...
> Very Briefly,
>
> Many MIDI files contains a LOT of information
> that gets deleted upon conversion to .mmf
> For instance, channel aftertouch, pitchbend (very common),
> polyphonic aftertouch (less common). And let me tell
> you, even the first two can generate amounts of data
> that dwarf the note-#-on-and-offs that you're left with.
>
> That's a pretty simply explanation. Rock On!
>
>
> Jutta
>
>
>
>
> On 02 Jan 2004, you wrote in alt.cellular.ericsson:
>
> > Now and then I find a MIDI that won't play properly on my phone, even
> > when the number of tracks are reduced to just a few (usually gets
> > stuck on a note and then speeds up).
> >
> > To resolve this, I used PSMplay to convert a MIDI to 40 chord .mmf and
> > back again. I checked and the resulting file had all of the original
> > notes. It also plays just fine.
> >
> > But the new file is only 4k, while the original was 13k. What was
> > removed?
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