xtract_tonality

[q-depot]

The tonality seems returning a negative value, should I get a frequency or what kind of value should I expect?

I also was wondering how the function can compute the tonality only based on the flatness db.

[jamiebullock]

That's a good question. Tonality and flatness are essentially the same thing. In LibXtract xtract_tonality() is just a scaled version of the flatness measure and should give you a value in the range 0..1. The fact it is giving you negative values suggests that you are passing a positive value for the argv. Are you using the result from xtract_flatness_db() for the argv of xtract_tonality()?