Support note names for opcodes, hikey, key, lokey and pitch_keycenter

[SpotlightKid]

Some software, for example Polyphone, produces SFZ files, where note names instead of MIDI note numbers are used for the values of the hikey, key, lokey and pitch_keycenter opcodes.

According to sfzformat.com: "values can be specified in MIDI note numbers (0-127) or note names (IPN Standard)". But the latter are currently not interpreted correctly by sfizz. It seems to just just play all the regions using these values on every key.

As a workaround, I currently use this script to fix the SFZ files exported by Polyphone (note that Polyphone also incorrectly uses partly localized note names, e.g. "H3" when the interface is not English, but that's a bug in Polyphone).

[jpcima]

Can you possibly share a sample?
Polyphone does not export me IPN notes, my output has numbers.

[kinwie]

@jpcima there is an option to choose note names instead of numbers. It's like in the Setting or Option menu

[jpcima]

Ok so this amounts to support the unicode symbols ♯ and ♭.
Sure I'll add it.