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#26 Key "Ab" doesn't allow sound on 3 simultaneous keys pressed

v0.6.x
closed-invalid
nobody
None
5
2014-01-23
2014-01-23
No

VMPK allows playing chords with 3 notes or more - except when using the note Ab or G#. On a standard QWERTY keyboard, it happens when using the keys H and 6, for instance. It plays only 1 or 2 notes, even when pressing 3 keys. You cannot play the chord for E, for instance.
I can reproduce this bug with any instrument (program), octave, transposition or operating system. It happens on Linux and FreeBSD as well.

Discussion

  • Sérgio Siegrist

    I forgot to tell: using 0.5.1 here.

     
  • Pedro Lopez-Cabanillas

    This is likely a hardware limitation, due to a cheap/bad computer keyboard. Try with another computer keyboard, and check if your keyboard is "anti-ghosting":

    http://www.microsoft.com/appliedsciences/antighostingexplained.mspx

    This has been discused here several times.

     
  • Sérgio Siegrist

    You are right. I could reproduce the same behavior in the applet on that page. This is not a VMPK bug. I'm sorry, and thank you, very much.

     
  • Pedro Lopez-Cabanillas

    • status: open --> closed-invalid
     

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