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如何测试 MIDI 键盘音符、力度和踏板

If there is no sound, no dynamics, or only a specific key does not respond, it will be easier to isolate the cause by looking at the MIDI messages directly without going through sound source software.

Process for enabling MIDI devices and checking keyboard, velocity, and pedal input
Process for enabling MIDI devices and checking keyboard, velocity, and pedal input

When this guide is useful

We will explain everything from connection to isolation for searching for ``MIDI keyboard test,'' ``Checking note velocity with Web MIDI,'' and ``Checking if the sustain pedal responds.''

  • I want to check MIDI keyboard input for 25 keys, 49 keys, 61 keys, and 88 keys.
  • I want to see note numbers, velocity, and MIDI channels
  • I want to check if I missed the sustain pedal or Note On/Note Off.

Preparation before connection

  • Check the USB cable and device power
  • If the DAW or editor is occupying a MIDI port, close it once.
  • Select the display closest to the actual machine from 25 keys, 49 keys, 61 keys, or 88 keys
  • Grant browser MIDI permissions only to the target site

Input

  1. Start a MIDI connection and select the target input device.
  2. Additional information: 1
  3. Press softly and firmly to see if the velocity value changes.
  4. Try the sustain pedal or pressing multiple keys at the same time and check the event history.

isolate symptoms

现象检查内容
Device is not displayedAdditional information: USB
Additional information for this feature.Note number and note on/off status
Constant strengthVelocity value and keyboard settings
the sound continues to growNote off and sustain pedal values

This test only checks MIDI input and does not check audio output or sound source plug-in operation.

Specific example: When only a specific key does not respond

Additional information: 1 0

Settings

  1. Connect your MIDI device and open the page in a compatible browser.
  2. Allow MIDI access and select your input device.
  3. Press all the keys in sequence to check the note number and velocity.
  4. Check pedals, channels, multiple hits, simultaneous presses, and compare event history.

Web MIDI API may not be available depending on the browser or connection method. If your device does not appear in the list, please check the compatible environment and USB connection.

Frequently asked questions

Can you make sounds by pressing the keyboard on the screen with the mouse?
The on-screen keyboard is used to check the MIDI input and display the reception status. Please press the keyboard of the actual device to confirm.
Is it a malfunction if there is no sound when I press the keyboard?
MIDI is performance information, and the device or tester itself may not have a sound source. Check if the input event is displayed.

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Open MIDI keyboard input tester