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08 Aug 2003 17:32:35 UTC
- Distribution: Music-Tempo
- Module version: 0.02
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NAME
Tempo - various conversions to and from BPM
SYNOPSIS
use Music::Tempo; my $marking = bpm_to_italian(50); # 'Largo' my $bpm = italian_to_bpm('Allegro'); # 120 my $ms = bpm_to_ms(100); # 600 my $bpm = ms_to_bpm(200,8); # 120
DESCRIPTION
Includes two main functions, converting BPM (Beats Per Minute) to and from ms (milliseconds) and Italian metonome markings.
METHODS
bpm_to_italian($bpm)
Takes a BPM marking, and returns an appropriate Italian metronome marking (Lento, Allegro etc. - see below for full list).
italian_to_bpm($marking)
Takes an Italian metronome marking (Lento, Allegro, Presto etc.) and returns an *average* BPM.
bpm_to_ms($bpm,$beat)
Converts from BPM to ms. The 'beat' parameter (which defaults to 4) acts as an extra divisor. For instance, 120 BPM would normally mean 1 crotchet (or 1/4 note) =500ms. Passing a beat of '16' would return 125ms, referring to semiquavers (or 1/16 notes).
ms_to_bpm($ms,$beat)
The reverse of bpm_to_ms.
TEMPI
The italian tempi are of course approximations. The ranges below have been greatly reduced, and are presented only as a 'last resort' for automatic machine translation etc. They're roughly based on an average between Maetzel and Quantz, tweaked for 'standard modern' usage (Allegro=120 etc.).
Largo 40-59 Larghetto 60-66 Adagio 67-72 Lento 73-78 Andante 79-88 Moderato 89-109 Allegro 110-129 Vivace 130-149 Presto 150-190 Prestissimo 190-220
TODO
AUTHOR
Ben Daglish (bdaglish@surfnet-ds.co.uk)
BUGS
None known All feedback most welcome.
COPYRIGHT
Copyright (c) 2003, Ben Daglish. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module.
SEE ALSO
perl(1).
Module Install Instructions
To install Music::Tempo, copy and paste the appropriate command in to your terminal.
cpanm Music::Tempo
perl -MCPAN -e shell install Music::Tempo
For more information on module installation, please visit the detailed CPAN module installation guide.