MIDISynth.Command (midi_synth v0.4.2)

Change the panoramic (pan) of a channel. This shifts the sound from the left or right ear in when playing stereo. Values below 64 moves the sound to the left, and above to the right.

pitch_bend(channel, bend)

Bend the pitch of notes playing in a channel. Values below 0x2000 will decrease the pitch, and higher values will increase it.

Types

channel()

@type channel() :: 0..15

A MIDI channel number

duration()

@type duration() :: non_neg_integer()

The duration in milliseconds for which to hold down a note.

int7()

@type int7() :: 0..127

A 7-bit integer

note()

@type note() :: int7()

A MIDI note

For non-percussion instruments, the frequency of a note is 440 * 2^((n − 69) / 12) where n is the note number.

Middle C is 60

program()

@type program() :: int7()

A MIDI program

velocity()

@type velocity() :: int7()

The velocity to strike the note.

127 = maximum velocity

volume()

@type volume() :: int7()

A channel volume

Functions

change_control(channel, control_number, control_value \\ 0)

@spec change_control(channel(), int7(), int7()) :: <<_::24>>

Change the MIDI controller value of a channel.

change_program(channel, prog)

@spec change_program(channel(), program()) :: <<_::16>>

Change the current program (e.g. instrument) of a channel.

change_sound_bank(channel, bank)

@spec change_sound_bank(channel(), integer()) :: <<_::48>>

Change the sound bank of a channel.

change_volume(channel, volume)

@spec change_volume(channel(), int7()) :: <<_::24>>

Change the volume of a MIDI channel. This change is applied to all playing and future notes.

note_off(channel, note)

@spec note_off(channel(), note()) :: <<_::24>>

Turn a note in a channel off.

note_off_all(channel)

@spec note_off_all(channel()) :: <<_::24>>

Turn all active notes in a channel off.

note_on(channel, note, velocity)

@spec note_on(channel(), note(), velocity()) :: <<_::24>>

Turn a note in a channel on.

pan(channel, pan)

@spec pan(channel(), int7()) :: <<_::24>>

Change the panoramic (pan) of a channel. This shifts the sound from the left or right ear in when playing stereo. Values below 64 moves the sound to the left, and above to the right.

pitch_bend(channel, bend)

@spec pitch_bend(channel(), integer()) :: <<_::24>>

Bend the pitch of notes playing in a channel. Values below 0x2000 will decrease the pitch, and higher values will increase it.