Welcome to Musi 1.0.0! A very basic gem for calculating intervals in music theory. Pass a note as a string such as "C" or "Ab" to a method and receive a new note in the form of a string.
Musi 1.0.0 now allows a user to raise or lower a note by all major/minor and perfect intervals as well as tritones.
Musi 1.0.0 updates Musi 0.1.2 which only had support for basic sharping, flatting, and raising and lowering by perfect fourths and fifths.
Add this line to your application's Gemfile:
gem 'musi'And then execute:
$ bundle
Or install it yourself as:
$ gem install musi
.sharp and .raisem2 are methods which both raise the input of a note given as a string by a minor 2nd interval .flat is a a method which will lower the input of a note given as a string by a minor 2nd .raise_whole_step and .raiseM2 raise a note by a major 2nd .lower_whole_step and .lowerM2 lower a note by a major 2nd
Other methods included: .raisem3 .lowerm3 .raiseM3 .lowerM3 .raiseP4 .lowerP4 .raiseA4 .lowerA4 .raised5 .lowerd5 .raiseP5 .lowerP5 .raisem6 .lowerm6 .raiseM6 .lowerM6 .raisem7 .lowerm7 .raiseM7 .lowerM7
To use:
Musi::Note.sharp("D") => D#
Enharmonic spellings such as B#, E# and Gx are currently not supported as input values, although spellings such as Cb and B# are valid output values.
No support for augmented and diminished intervals yet aside from triones.
After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/eselbeus/musi. Gem created by Seann Branchfield.
The gem is available as open source under the terms of the MIT License.