Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Software
User Name
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.


  Search this Thread
Old 08-21-2010, 03:21 AM   #1
Registered: Apr 2006
Location: Washington
Distribution: Debian Gnu/Linux Lenny on AMD64x2 (32-bit mode), an AMD Sempron 64 laptop, debian, 32bit
Posts: 101

Rep: Reputation: 15
MIDI keyboard note-on and note-off inverted


I recently acquired a Casio midi keyboard and a cheap USB-midi interface. After some tinkering, I seem to have gotten it to basically work. (Using Jackd to connect up the midi outputs to a synthesizer, like bristol, I can get notes to play just fine.)

The only problem is that the note-on and note-off events seem to be reversed. What I mean is that, I get a note when I release a key on the keyboard, rather than when I press it. Which also means I can't stop a note without ending the program.

I've done some Googling, and I think I can solve the problem by writing a filter to invert the note-on and note-off events. Before I end up reinventing the wheel, though, I thought I would ask: does anybody know of existing software to do this, or some other solution to this odd problem?


Last edited by jakykong; 08-21-2010 at 03:21 AM. Reason: typo


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Note to self. . . mjones490 General 2 09-25-2009 01:43 AM
This is just a 'thank you' note. decado Fedora 1 11-10-2007 05:22 PM
Note for usb keyboard/mouse users Damase Linux - General 0 10-18-2006 02:51 PM
Just a note... czon General 0 08-18-2005 11:12 AM
A Note To Everyone TheLinuxDuck Programming 2 03-22-2005 09:07 AM > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 01:33 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration