Send a MIDI polyphonic key pressure message

midi_poly_pressure  note (midi), value (midi)

Sends a MIDI polyphonic key pressure message to all connected devices on all channels. Use the port: and channel: opts to restrict which MIDI ports and channels are used.

Note number and pressure value can be passed as a note such as :e3 and decimal values will be rounded down or up to the nearest whole number - so values between 3.5 and 4 will be rounded up to 4 and values between 3.49999… and 3 will be rounded down to 3.

You may also optionally pass the pressure value as a floating point value between 0 and 1 such as 0.2 or 0.785 (which will be mapped to MIDI values between 0 and 127) using the val_f: opt.

MIDI 1.0 Specification - Channel Voice Messages - Polyphonic Key Pressure (Aftertouch)

Introduced in v3.0

Examples

# Example 1

midi_poly_pressure 100, 32

#=> Sends a MIDI poly key pressure message to control note 100 with value 32 to all ports and channels

# Example 2

midi_poly_pressure :e7, 32

#=> Sends a MIDI poly key pressure message to control note 100 with value 32 to all ports and channels

# Example 3

midi_poly_pressure 100, 32, channel: 5

#=> Sends MIDI poly key pressure message to control note 100 with value 32 on channel 5 to all ports

# Example 4

midi_poly_pressure 100, val_f: 0.8, channel: 5

#=> Sends a MIDI poly key pressure message to control note 100 with value 102 on channel 5 to all ports

# Example 5

midi_poly_pressure 100, value: 102, channel: [1, 5]

#=> Sends MIDI poly key pressure message to control note 100 with value 102 on channel 1 and 5 to all ports