3/2 mensuration sign in 17th century music

[craigsapp]

In 17th century music, the 3/2 sign is a mensuration sign rather than a time signature. The encoders use a time signature. These should be changed (manually or more easily with a script) to be mensuration signs.

In other words, *M3/2 should be changed to *met(3/2) in such scores.

Alternatively I could write a VHV filter to do this. In that case I will look at the duration of a measure labeled with 3/2 if the duration is not a dotted whole note, then convert the time signature into a mensuration sign.

Mensuration signs will not be shown unless there is a (automatically hidden) time signature. What time signature to use in such cases is not entirely clear. For our purpose it is not really important. I typically use *M3/3%2 which means three triplet whole notes per measure (where there are three beats in the measure). Alternativly *M2/1 is ok since it is technically what the duration of the measure is (two regular whole notes), but it is useful to capture the beat durations in the time signatures.

Example:

https://polishscores.org/?id=16xx:1489&con=TsTp{80}
https://verovio.humdrum.org/?file=https:%2F%2Fhumdrum.nifc.pl%2F16xx:1489.krn

Corrected:

But obviously I should implement a 3/2 mensuration sign before doing that.