NAME

Music::PitchNum::ASPN - note name and pitch number roles for ASPN notation

SYNOPSIS

  package MyCleverMod;
  use Moo;
  with('Music::PitchNum::ASPN');
  ...

Then elsewhere:

  use MyCleverMod;
  my $x = MyCleverMod->new;

  $x->pitchname(69);    # A4
  $x->pitchname(70);    # A#4
  $x->pitchnum('A');    # 69
  $x->pitchnum('A#');   # 70

  $x->pitchname(69, ignore_octave => 1); # A

DESCRIPTION

A Music::PitchNum implementation specifically for the American Standard Pitch Notation (ASPN), also known as the scientific notation.

This module is expected to be used as a Role from some other module; Moo::Role may be informative.

METHODS

pitchname pitchnumber

Returns the pitch name for the given integer, though will throw an exception if passed something that is not a number.

This method accepts an optional ignore_octave parameter that if true will strip the octave information from the pitch name.

pitchnum pitchname

Returns the pitch number for the given ASPN note name, or undef if the note could not be parsed. Only the note names A-G (and not the lower case forms), optional # for sharp, and the octave number are parsed by this module; other forms will (or should) not match.

BUGS

Reporting Bugs

Please report any bugs or feature requests to bug-music-pitchnum at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Music-PitchNum.

Patches might best be applied towards:

https://github.com/thrig/Music-PitchNum

Known Issues

None known for the ASPN notation support, though this is a very limited format with only one accidental style (a single # for sharp) and a mandatory octave number.

SEE ALSO

Music::PitchNum

REFERENCES

Young, R. W. (1939). "Terminology for Logarithmic Frequency Units". The Journal of the Acoustical Society of America 11 (1): 134-000. Bibcode:1939ASAJ...11..134Y. doi:10.1121/1.1916017.

AUTHOR

thrig - Jeremy Mates (cpan:JMATES) <jmates at cpan.org>

COPYRIGHT AND LICENSE

Copyright (C) 2014-2016 by Jeremy Mates

This module is free software; you can redistribute it and/or modify it under the Artistic License (2.0).