MIDI Forum

This indeed sounds like an overzealous power-saving "feature". What is the exact name of the setting that you tried to disable? "USB selective susp...

The velocity affect's a single note's volume (and maybe other parameters). The expression (CC 11) affects the entire channel, and should be used by t...

You can use any host that allows to connect a USB device and has MIDI ports. The UMH-10 from DOREMiDi is such a device, but any other USB MIDI host sh...

The USB MIDI protocol (and all other USB communication) uses all four pins. But it is certainly possible to use USB to power devices. Please note t...

The bank number is a setting of the channel, so in theory, you do not need to repeat it for other Cx commands on the same channel x. But in practice, ...

Some software uses the range 0...127, some uses 1...128 (and this might be different for different parameters). You have to check what range your soft...

For Roland's list of these MT-32 instruments, see p. 186 of the SC-8850 manual. (The SAM probably does this for SoundCanvas compatibility.) The MT-...

The XK1 uses a 3.3 V supply. At that voltage, 120 Ω + 22 Ω actually is too much. And the inputs always should use 220 Ω. (The noise filtering is fine,...

The standard circuit uses an NPN or a logic output with 2× 220 Ω. Using a PNP as a voltage follower is unusual, but will work. The resistors are to...

If have not found anything in the Data List, but I do not know how the Genos works. What MIDI messages does it transmit when you change these volum...

Which reasons might prevent us from representing tones merely with their fundamental frequencies? Interoperability. Both controllers and synthesizers...

The driver page says it supports Windows 10.

See, for example, stackoverflow.com/questions/44410914/sending-a-system-exclusive-message-using-coremidi. For most devices, the device ID is 0x10. ...

FPGAs must be programmed. It is that proprietary programming that you would have to change.

The optocoupler circuit is fine. SoftwareSerial is not reliable; it will read wrong bits when its code does not manage to get executed early enough...