Hi all,
for some musical analysis i want to map musical notes notated in Helmholtz pitch notation to MIDI note numbers.
I tried this:
#!/usr/bin/env perl
+
use warnings;
use strict;
use charnames qw(:full);
use Data::Dump;
# use utf8;
binmode STDOUT, ":utf8";
my $flat = chr( charnames::vianame(qq(MUSIC FLAT SIGN)) );
my $sharp = chr( charnames::vianame(qq(MUSIC SHARP SIGN)) );
print qq( b$flat\n);
print qq( a$sharp\n);
my %helmholtz_to_midi = ( "a$sharp\/b$flat" => 70 );
dd \%helmholtz_to_midi;
__END__
I get:
b♭
a♯
{ "a\x{266F}/b\x{266D}" => 70 }
But i want something like this:
{ "a♯/b♭" => 70 }
How can i do that?
Short and very simplified explanation why i need such strange keys:
Every musical note in the western system of music has at least two incarnations (there are many more, but i skip the details for the moment).
In this case this is b♭ or a♯. For example: if it is a♯, it may belong to the tonality of F♯ where the note is the major third.
But if written as b♭, the tonality may be F where it is a perfect fourth. It depends on the context.
Thank you very much for any hint and best regards, Karl
«The Crux of the Biscuit is the Apostrophe»
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