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Old November 11th 16, 04:32 AM posted to
Scott Dorsey
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Posts: 16,710
Default USB Midi vs audio interface MIDI

In article >, Neil > wrote:
>On 11/10/2016 7:44 PM, Mike Rivers wrote:
>> MIDI contains so little data that it its contribution to the USB stream
>> is negligible.

>Well, the amount of MIDI data depends on what the OP is doing. I know he
>_said_ "piano", but some MIDI "pianos" play multiple instruments via
>MIDI, and it can get pretty busy with 16 instruments (i.e. one MIDI
>interface) plus audio. I don't know what the OP expects, so I'm hoping
>that a discussion of the potential issues helps him out a bit.

Even a lot of MIDI data is still not very much data by modern standards.
There was a time when 31.250 kbps seemed like a lot of data but now even
slow interfaces today handle thousands of times more.

You can saturate the whole MIDI pipe without noticing any I/O load on a
modern computer. Back in the days of the Commodore 64 and the Atari ST
there were issues doing computation while driving the midi port, but we
are long past that.

"C'est un Nagra. C'est suisse, et tres, tres precis."