Using Vamp Plugins and Hosts > Host Forum: Sonic Visualiser

Spectrogram display based on musical notation instead of Hz ?

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mark_orion:
Does SV provide an option to display a spectrogram to use musical notation instead of frequencies in Hz ? I would like to translate some music into midi, I do not have the perfect musical ears (yet) and the various vamp-plugins and other software pieces that try to convert recorded audio into midi are very tricky.
Technically  I think this should be possible with a scale based on 440 Hz concert pitch.

cannam:
The nearest thing is the piano keyboard that is drawn along the edge of the spectrogram if you have the vertical scale set to logarithmic.  This shows middle C (in light blue) and the other Cs (in grey).

If you activate the Measure tool, you can then wave the mouse over the spectrogram and see the current position reported in note terms as well as Hz.

The tuning frequency for these calculations can be adjusted in the preferences (Analysis tab, "Frequency of concert A").

Chris

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