Music Player Network
Previous Thread
Next Thread
Print Thread
MIDI to USB cables all the same?
#3023779 01/15/20 06:34 PM
Joined: May 2004
Posts: 6,814
Likes: 25
Jazz+ Offline OP
MP Hall of Fame Member
OP Offline
MP Hall of Fame Member
Joined: May 2004
Posts: 6,814
Likes: 25
I see MIDI to USB cables for $8-$15 on Amazon. But they are $40 on Sweetwater. Aren't they basically simple cables that all render the same latency? Of course some would have a sturdier construction than others.

("With 2 different MIDI interfaces (EMU 1X1 and Iconnectivity MIDI4+), produces the following result : 5 ms latency. Probably due to the USB/MIDI Conversion.. But this latency is reduced to 1 ms when using the internal routing of the interface (Iconnectivity) between its various MIDI DIN plugs." ) ......??? what does it mean???

Keyboard Corner Island
Re: MIDI to USB cables all the same?
Jazz+ #3023782 01/15/20 06:44 PM
Joined: May 2004
Posts: 6,814
Likes: 25
Jazz+ Offline OP
MP Hall of Fame Member
OP Offline
MP Hall of Fame Member
Joined: May 2004
Posts: 6,814
Likes: 25
"In summary :
MIDI DIN and MIDI USB have exactly the same latency.
But a conversion from one format to another will add a few ms (3 ms in my test)
The best thing you can do is to plug in all MIDI DIN or all USB MIDI."

https://keyboardwaves.com/midi-din-vs-midi-usb-latency-test/



Re: MIDI to USB cables all the same?
Jazz+ #3023789 01/15/20 07:02 PM
Joined: Sep 2019
Posts: 2,637
Likes: 195
MP Hall of Fame Member
Offline
MP Hall of Fame Member
Joined: Sep 2019
Posts: 2,637
Likes: 195
Thanks for this. I've been considering hooking my Akai MPK25 to the Presonus Quantum via the MIDI DIN cable simply because I have limited USB ports on my Macbook Pro and haven't loved my experience with USB hubs. When I eliminate all USB except a mouse I get no crashes on my Thunderbolt network. Too lazy to figure that one out if I have a workaround.


There is never enough time to be in a hurry...
Re: MIDI to USB cables all the same?
Jazz+ #3023791 01/15/20 07:02 PM
Joined: May 2014
Posts: 19
H
Member
Offline
Member
H
Joined: May 2014
Posts: 19
I know you're asking about latency, @Jazz+ but just a reminder here to also check that whichever one you get works for the computer or tablet that you intend to connect it to. Some are not iOS compatible and some only work with only certain versions of the computer or tablet's OS. I suspect I'm not the only one who has made that mistake. eek

Last edited by HowardS; 01/15/20 07:04 PM.
Re: MIDI to USB cables all the same?
Jazz+ #3023811 01/15/20 08:50 PM
Joined: Oct 2009
Posts: 14,897
Likes: 63
MPN Advisory Board
10k Club
Online Content
MPN Advisory Board
10k Club
Joined: Oct 2009
Posts: 14,897
Likes: 63
They are not "simple cables," the MIDI signals have to be converted to USB signals (entirely different protocols, including the fact that MIDI is parallel and USB is serial). Some people have reported problems with the generic non-branded ones, others have found them to be fine. The M-Audio Uno has issues with some Yamaha keyboards, so I guess that's evidence that they're not all identical. You could try a cheap one from a place with good return policy, and see if it works fine for you... and if it doesn't, get a Roland or iConnectivity for $40.

Last edited by AnotherScott; 01/15/20 09:18 PM.

Maybe this is the best place for a shameless plug! Our new video at https://www.youtube.com/watch?v=3ZRC3b4p4EI is a 40 minute adaptation of T. S. Eliot's "Prufrock" - check it out!
Re: MIDI to USB cables all the same?
AnotherScott #3023822 01/15/20 09:10 PM
Joined: Feb 2014
Posts: 259
Likes: 4
C
Senior Member
Offline
Senior Member
C
Joined: Feb 2014
Posts: 259
Likes: 4
Originally Posted by AnotherScott
They are not "simple cables," the MIDI signals have to be converted to USB signals (entirely different protocols, including the fact that MIDI is parallel and USB is serial). Some people have reported problems with the generic non-branded ones, others have found them to be fine. The M-Audio Uno has issues with some Yamaha keyboards, so I guess that's evidence that they're not all identical. You could try a cheap one from a place with good return policy, and see if it works fine for you... and if it doesn't, get a Roland or iConnectivity for $40.


They are both serial:

MIDI is a very slow serial interface 31K bits per second, USB 2 is a very fast serial interface 480Mbits / sec

I bought a cheap MIDI USB cable couple of years back. It was poor and could only handle simple Note On/Off messages. Anything else like pitch bend caused notes to drop out etc. Do the job properly with something like ICM2 - very powerful and reliable box.



Last edited by ChazKeys; 01/15/20 09:13 PM. Reason: update
Re: MIDI to USB cables all the same?
ChazKeys #3023826 01/15/20 09:17 PM
Joined: Oct 2009
Posts: 14,897
Likes: 63
MPN Advisory Board
10k Club
Online Content
MPN Advisory Board
10k Club
Joined: Oct 2009
Posts: 14,897
Likes: 63
Originally Posted by ChazKeys
They are both serial

Whoops. yes, thanks for the correction!


Maybe this is the best place for a shameless plug! Our new video at https://www.youtube.com/watch?v=3ZRC3b4p4EI is a 40 minute adaptation of T. S. Eliot's "Prufrock" - check it out!
Re: MIDI to USB cables all the same?
Jazz+ #3024267 01/17/20 11:43 PM
Joined: May 2010
Posts: 1,287
KCFF League Champ '15
Platinum Member
Offline
KCFF League Champ '15
Platinum Member
Joined: May 2010
Posts: 1,287
Not sure what happened today but I tried a USB cable I found in my desk (probably previously used for a printer) to connect my Kurz board to my V3 piano module and three songs into my set it stopped transmitting any data. Don't know if it's a bad cable but I think I'm going to stick with standard MIDI cables for right now, never had issues with those ever.


'57 Hammond B-3, '60 Hammond A100, '64 Leslie 251, '77 Leslie 330, '80 Leslie 770, '64 Hammond PR-40
Trek II UC-1A
Hammond SK1 + HX3 organ module
Kawai MP7
Alesis QSR





Moderated by  Dave Bryce, Stephen Fortner 

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.4