MIDI Forum

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...

RIFF "RMID" files contain exactly one SMF file in the "data" chunk. But the file might contain other chunks; Microsoft suggests that "INFO" makes sens...

The USB MIDI class specification has no such restriction. What you are seeing is caused by the driver in the specific version of Windows you're usi...

By default, anything played on channel 10 is drums. It is possible that this setting was changed on the E-473 and that that file does not reset it, o...