View Full Version : Can Audio Signal Go Through Midi Cable
flymax
02-24-2001, 09:27 AM
Sample Dump does it. Can it go thru in differnet ways?
Thanks,
Pete
Can water be turned into fire ?
Dean Bohana
02-26-2001, 01:55 PM
Does the Pope poop in the woods?
flymax
02-26-2001, 05:22 PM
He might when no one's looking.
Can someone give a simple answer to how sample dump goes thru?
IOP Drummer
02-27-2001, 01:14 AM
A 5 pin din cable uses the MIDI potocol. That cable is a little over 30K/sec transfer rate. I believe that it is actually 38.5 or so. Not to mention that it is a serial conection. It is so slow, that a tiny mono audio sample would take longer to transfer over a 5 pin din than it would to do anything else on Earth.
Noiz2
02-27-2001, 10:04 AM
How about a real answer???
Sample dump is not passing "audio" its sending a digital file, slowly, to or from your sampler. That file when played by your sampler creates the "audio" you hear. MIDI only passes data, analoge "audio" whold sound bad if you found a way to wire it up through a MIDI cable because of all kinds if issues - like shielding, impeidence etc - and the MIDI speck is way to slow to pass digital "audio" at anywhere close to real time.
Hope this was helpful
SK
flymax
03-02-2001, 05:40 AM
Thank You Noiz2.
-Pete
Mount Royal
03-02-2001, 02:14 PM
MIDI transmission is a 20 milliamp DC current loop with an AC signal superimposed upon it. 3 of 5 pins in the din connector are used; two for the current loop, and one for ground. Most MIDI devices float the ground pin on the receive connector to prevent a ground loop, so only two pins are active on this connector.
MIDi cable from the music store is crummy 3 or 5 conductor unshielded cable. The inherantly inferior din connector, you're familiar with. Neutrik makes a better example of this connector by the way, model NYS322. I use 6 channels with my in-the-wall snake cables to transmit MIDI. Each MIDI channel uses typical 2 conductor-plus-shield cable intended for transmission of balanced analog audio. TRS connectors and patchbays are used for MIDI connections, except at the MIDI device itself which of course uses the 5 pin din. 70 foot runs exist at my place.
You've asked about transmitting audio down a MIDI cable. Well, sure, you can use any 5 conductor cable to transmit analog audio, but there will be EMI shieding problems in many instances, and the like, and so on. Are you wondering if audio is being transmitted within the MIDI current loop circuit? No it's not; that's the water and fire analogy given above.
Perhaps we've missed the nature of your real question.
John Caldwell
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