MacMusic.org  |  PcMusic.org  |  440Software  |  440Forums.com  |  440Tv  |  Zicos.com  |  AudioLexic.org
Loading... visiteurs connectés
 
Reply to this topicStart new topic
> Usb & Midi Cables, what is the difference?
monads
posté mar. 15 avril 2003, 15:32
Message #1


Newbie


Groupe : Members
Messages : 9
Inscrit : 04 avril 03
Lieu : Chino Hills - US
Membre no 15,566




Can someone please explain to me what the difference is between connecting a keyboard/controller via USB cable and traditional Midi cables are? I know the later you need a midi interface. I read that the USB transfer rate is faster and you can switch channels to rout different midi data. Am I missing something?
Go to the top of the page
 
+Quote Post
lepetitmartien
posté mer. 16 avril 2003, 03:49
Message #2


Moderator In Chief (MIC)
Icône de groupe

Groupe : Editors
Messages : 15,189
Inscrit : 23 déc. 01
Lieu : Paris - FR
Membre no 2,758




Midi cables are not "slow" it's the clocking that regulates flows in it that is (remember it's 20 years old this thing)

USB cable are "fast" in comparision, but not a lot if you look at alternatives (like Firewire or fast SCSI), USB is just a bus protocol (with unique devices, rules for sending, receiving, aknowledging, data correction… a developer could tell you much more, but you don't need it) like midi is a communication protocol (a time base, notes on/off, controllers, data…)

So even if USB is not the state of the art nor the fastest way to move data, it's way faster than Midi at that.

Now…

When you connect a USB keyboard to a computer you're not using midi. The keyboard is just a computer peripheral sharing the USB bus like the mouse. No Midi, no channel, just peripherals and a computer. A driver controling it.

Even if you use a USB midi interface, midi is not used between the interface and the computer. The computer send paquets to a peripheral which is sorting out Midi after having made his stuff to the data coming from the computer (mostly assembling the packets as a continuous midi data stream) and reverse just the same.

then does it answer you question? biggrin.gif


--------------------
Our Classifeds • Nos petites annoncesTerms Of Service / Conditions d'UtilisationForum Rules / Règles des ForumsMacMusic.Org & SETI@Home
BOING BUMM TSCHAK PENG! Are you musician enough to write in our Wiki?
BOING BUMM TSCHAK ZZZZZZZZZZZOING! Êtes-vous assez musicien pour écrire dans le Wiki?
Go to the top of the page
 
+Quote Post
monads
posté mer. 16 avril 2003, 15:29
Message #3


Newbie


Groupe : Members
Messages : 9
Inscrit : 04 avril 03
Lieu : Chino Hills - US
Membre no 15,566




I think I understand now. I guess the one good thing about USB is to eliminate all the midi interface clutter. Thanks again for the reply and help.
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic
1 utilisateur(s) sur ce sujet (1 invité(s) et 0 utilisateur(s) anonyme(s))
0 membre(s) :

 

Version bas débit - mercredi 11 déc. 2024, 10:33
- © 440 Forums 2011