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MIDI sustain and expression pedal test

Ready to test

MIDI input

Message monitor: does not play the instrument's audio.

Messages received0
Notes held0
Sustain—
Expression—

Select the channel and CC. Capture released and pressed positions to compare value direction; this does not measure electrical polarity.

Received inputs—
Released → pressed—
0123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127

Control change

Recent messages

ChannelCommandNote / CCValue

Requires a compatible MIDI input and browser permission. Does not request SysEx, record audio or measure total latency. Pedals must connect through an instrument or interface that sends MIDI.

GETTING STARTED ↓

MIDI sustain and expression pedal test

Compare sustain and expression values and capture released and pressed pedal positions.

Connect the pedal to an instrument and connect its MIDI input. Choose a channel and CC: sustain commonly uses 64 and expression 11. Capture and compare both positions.

HAVING TROUBLE?

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Why isn't the test responding?+

Connect the pedal to an instrument and connect its MIDI input. Choose a channel and CC: sustain commonly uses 64 and expression 11. Capture and compare both positions.

What can this test measure?+

Requires a compatible MIDI input and browser permission. Does not request SysEx, record audio or measure total latency. Pedals must connect through an instrument or interface that sends MIDI.

Do my data stay on my computer?+

Hardware inputs, audio, and video stay on this device. Nothing is recorded or uploaded.

MUSIC_OVERLOAD

The screen crashed

Music mode went past the limit and the page stopped responding. Reload to continue.

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