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Notes

A Note is a type meant to encode the abstract note:

  • pitch::Int: the height of the tone
  • loudness::Float32: the volume of the tone
  • duration::Float32: the length of the tone

The pitch is just an integer, and not a frequency. The frequency is assigned by a TuningSystem. This means that the same melody (series of notes) can easily be analyzed in different tunings by changing the tuning.

We also define a Chord which is a vector of notes, that all have the same duration, but may differ in loudness.

We define an AbstractNote covering Note and Chord, and define play and save methods on the AbstractNote.

Playing Notes

We have methods for directly playing notes: play_wav_direct. This will take:

  • a Note and play the note using a standard equal temperemt
  • a Chord and play the chord
  • a Vector{N} where N <: AbstractNote and play a sequence of Notes or Chords

Here are some examples:

using MusicalPlaying
play_wav_direct("A")
play_wav_direct(chord(["C", "E", "G"]))
play_wav_direct(note.(["C", "E", "G"]))
play_wav_direct([chord(["C", "E", "G"]), chord(["F","A","C"]), chord(["G", "B", "D"]), chord(["C", "E", "G"])])

The play_wav_direct methods work by writeing and reading a WAV-file. We (will also) have play_portaudio methods that use PortAudio.jl and SampleSignals.jl to play a stream. This is more efficient for long pieces. But the play_wav_diret is simple and very robust for studiyng short phrases.