Feature #905

Unit conversion helper

Added by Chris Cannam over 6 years ago. Updated almost 2 years ago.

Status:ClosedStart date:2014-03-20
Priority:NormalDue date:
Assignee:-% Done:


Target version:-


It would be very nice to have a window to help do unit conversions, that is, it would have a set of text fields you enter numbers into and it would convert those numbers to different units for you.

Possible unit conversions could include


You enter any of the following:

  • Hz
  • MIDI note number
  • Note name and octave
  • Maybe Key number on the piano keyboard (1-88)
  • Maybe Tonic of key, major/minor, temperament, note number in scale, and octave

and it should provide conversions to all of the others. It should use the concert-A setting in the preferences, and remind you what that is.


  • Difference between two notes, in Hz
  • Difference between two frequencies, in semitones/cents


  • Hz to period (sec/msec)
  • bpm to period
  • bpm to Hz
  • ms to sample count (and vice versa) at file sample rate
  • ms to sample count (and vice versa) at arbitrary sample rate


#1 Updated by Chris Cannam over 3 years ago

Unit converter now does basic pitch conversions & beat timing conversions. Doesn't handle scale & key or other temperaments besides 12tET.

#2 Updated by Chris Cannam almost 2 years ago

  • Status changed from New to Closed

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