MIDI Forum

Never heard of that. Check if it works if you rename the files from .mff to .mid. If not, where did you get those files from? Which software gen...

The specification itself is freely available. For a somewhat easier to understand documentation, see the archived copy of a mirror of Jeff Glatt's ...

Those descriptors look OK (but you can check with "lsusb -v" on a Linux host if they are enumerated correctly). If there were not any ports, then y...

I cannot see your code. And there would be better debugging mechanisms on a Linux host.

"F0 7E 00 06 01 F7" is a Device Inquiry message (with a device ID that is unlikely to be correct ). You can ignore it. 06 F0 F7 corresponds to the ...

Everything sounds as if you're using the MIDI monitor correctly. The problem is probably with your firmware. In theory, outputting USB-MIDI event p...

Does "send" mean from the device to the host, or from the host to the device? Why do you write you "believe" it is sending? Do you have any evidenc...

To get your instrument names/numbers, you need enter them by hand, or import a Cakewalk .INS file. As far as I can see, both require the Pro-Mix ac...

The MIDI specification specifies a 5 mA current loop, and shows three 220 Ω resistors to limit the current when used with a 5 V transmitter. When you...

Controller and Program Change message affect only the channel they are sent on, so you must send them on the same channel as the Note messages they be...

The MIDI specification specifies a bandwidth of at most 3125 bytes per second, which is more than 1000 messages per second. There is no requirements ...

It is possible to have more than 16 channels in a single file. But this requires special meta events, FF 09 (device name, defined in RP-019) or FF 21...

The attack and decay controllers can make the volume ramp up and down slower, but do not affect when that ramp starts. The duration of a note is de...

Any MIDI player should pass through all messages to the synth. (In other words, your problem is likely that the messages you're sending are wrong, or ...

I never claimed that Microsoft has any good documentation. Anyway, this is the list of melodic instruments, outside the GM bank, in GM.DLS: CC0=8 ...