Re: MusicXML and MIDI

It doesn't bring much for the debate but since MuseScore is mentioned,
allow me to correct the false assumptions.

A MusicXML file created with MuseScore 2.0.3 and containing two quarter
notes and a triplet of 8th notes in 4/4 will export
with <divisions>3</divisions> and the quarter notes will have a duration of
3 and each 8th note in the triplet a duration of 1.
The division is computed to be the least common multiple of all the
durations. Here is the code : https://github.com/musescore/MuseScore
/blob/a65f06be68c7b99d4d5eacc3d1ba365930f530d4/mscore/exportxml.cpp#L962

Of course, it's not ideal since, like Joe mentioned, one needs to go
through the entire piece. Using fractions could be more efficient for a
future standard.

Nicolas Froment
MuseScore cofounder


2016-04-06 21:56 GMT+04:00 Glenn Linderman <v+smufl@g.nevcal.com>:

> On 4/6/2016 4:44 AM, Jamie Gabriel wrote:
>
>>
>> When Sibelius/Musescore generate MusicXML, I believe those applications
>> round a bar of 4/4 to an integer of 1024. This means that any quarter
>> note in the bar will be 256, and that three quaver triplets will be 85,
>> 85, and 86. And so if you are doing any kind of data analysis on the
>> musicXML you tend to run into problems because the rounding.
>>
>
> I note that common numbers in MIDI are 96 and 192... evenly divisible by
> 2, 3, 4, and 8.
>
> Seems like a good idea, that Sibelius and Musescore must have missed.
>
> Maybe an extra factor of 3 would be nice, though.
>
>