Are there Nords that send midi via USB 2.0, not v1.1?

[KeyScanner]

USB 2.0 polls devices for midi data eight times per millisecond, whereas version 1.1 polls once every millisecond.

The more time a midi byte spends in a queue waiting to be polled, the more latency and jitter there is. USB 2.0 reduces latency and jitter to an eighth of what it is under v1.1. This difference is probably be something a lot people don't care about, but it makes a difference to me. I know this from A/B tested a midi controller using different versions of USB.

I am especially interested in knowing whether a Stage 4 uses UBS 2.0.

If you're on a mac and have a Nord, to find out what version of USB is being used:
- Open spotlight (command-spacebar) and type "System Information" to open the System Information app
- Click on the "USB" tab in the top tab group
- Find your Nord on the chart of USB devices the app displays, and look at its "Speed" property.
- If the "Speed" property says "Up to 12 Mb/s", it's using USB 1.1
- If the "Speed" property says "Up to 480 Mb/s", it's using USB 2.0

[analogika]

USB 2.0 polls devices for midi data eight times per millisecond, whereas version 1.1 polls once every millisecond.

The more time a midi byte spends in a queue waiting to be polled, the more latency and jitter there is. USB 2.0 reduces latency and jitter to an eighth of what it is under v1.1. This difference is probably be something a lot people don't care about, but it makes a difference to me. I know this from A/B tested a midi controller using different versions of USB.

I am especially interested in knowing whether a Stage 4 uses UBS 2.0.

If you're on a mac and have a Nord, to find out what version of USB is being used:
- Open spotlight (command-spacebar) and type "System Information" to open the System Information app
- Click on the "USB" tab in the top tab group
- Find your Nord on the chart of USB devices the app displays, and look at its "Speed" property.
- If the "Speed" property says "Up to 12 Mb/s", it's using USB 1.1
- If the "Speed" property says "Up to 480 Mb/s", it's using USB 2.0

The standard MIDI DIN works at 31,25 Kb/s and still used with no issues... so why bother, when USB1 is already 40 times faster and the keyboard needs anyway to keep also the DIN output consistent?

[analogika]

::laughs in 300 baud::

[cgrafx]

Nord usb interfaces are usb 2.0. If you connect the nord to a usb 1.x interface it will operate at the slower speed. If you attach any usb 1.x devices on the same usb port/controller, then the entire usb chain will operate at the slower data rate.

Meaning if the usb controller in the host is also attached to something like a mouse or a computer keyboard anything else attached to that same controller chip channel will also operate at the 1,x speed, even if it’s a separate physical usb connector.

[analogika]

Nord usb interfaces are usb 2.0. If you connect the nord to a usb 1.x interface it will operate at the slower speed. If you attach any usb 1.x devices on the same usb port/controller, then the entire usb chain will operate at the slower data rate.

Meaning if the usb controller in the host is also attached to something like a mouse or a computer keyboard anything else attached to that same controller chip channel will also operate at the 1,x speed, even if it’s a separate physical usb connector.

But, as @maxpiano notes, it is completely irrelevant, seeing as how slow and simple this 1983 protocol "MIDI" actually is.

[cgrafx]

Nord usb interfaces are usb 2.0. If you connect the nord to a usb 1.x interface it will operate at the slower speed. If you attach any usb 1.x devices on the same usb port/controller, then the entire usb chain will operate at the slower data rate.

Meaning if the usb controller in the host is also attached to something like a mouse or a computer keyboard anything else attached to that same controller chip channel will also operate at the 1,x speed, even if it’s a separate physical usb connector.

But, as @maxpiano notes, it is completely irrelevant, seeing as how slow and simple this 1983 protocol "MIDI" actually is.

yes I understand the MIDI speed issue, but that limitation is for 5-pin DIN connections.

"The MIDI 2.0 spec has the same speed limit over 5-pin DIN; the speed limit over ethernet or usb is limited only to how fast those can go, so we're talking gigabits for ethernet, but interfacing with legacy devices requires an ethernet->DIN box to repeat messages over the slower rate."

So USB MIDI is not limited to the Serial UART Baud rate that the 5-pin DIN interfaces impose.

Given that, my point was all Nord keyboards that do MIDI over USB do so over USB 2.0

The only way you would get USB 1.x speeds is if you have a 1.x device connected to the same USB host controller chip/bus.

And to recognize that there can be more than one USB physical connector attached to the same USB controller bus.

So if for some reason you are seeing 1.x transfer rates, it is most likely due to having a keyboard or mouse attached to the same USB bus.

[analogika]

yes I understand the MIDI speed issue, but that limitation is for 5-pin DIN connections.

"The MIDI 2.0 spec has the same speed limit over 5-pin DIN; the speed limit over ethernet or usb is limited only to how fast those can go, so we're talking gigabits for ethernet, but interfacing with legacy devices requires an ethernet->DIN box to repeat messages over the slower rate."

So USB MIDI is not limited to the Serial UART Baud rate that the 5-pin DIN interfaces impose.

Can't you count the machines that support MIDI 2.0 on one, maybe two hands?

There's literally like three controller keyboards (Native Instruments, Korg, Roland) available that (partially) implement 2.0 spec, and Waldorf Quantum/Iridium, Yamaha Montage M, Korg Multi/Poly, and…that's pretty much it?

Certainly none of the Nords.

And even for MIDI 2.0, the USB 2.0 standard will be much, much more than sufficient.

[FZiegler]

I initially mixed that up, too: It is not question about MIDI 2.0. The question is about MIDI 1.0 over USB 2.0.

[cgrafx]

Even MIDI 1.0 can send data faster over USB than 5-Pin DIN. It's all dependent on the Drivers and internal MIDI implementation, but it is NOT specifically bandwidth limited like 5-pin DIN interconnects.

I do believe this information is correct - Quoted from MIDI discussion on gearspace

The midi protocol has no speed limits.

The DIN serial interface part of the midi standard dictates a speed for the DIN serial connection. Nothing is specified about usb connections or how fast it should happen.

So for instance when your daw feeds midi data to a vst then you don't even have a midi interface, never mind an actual physical one. And thus no speed limits for the actual transfer of the data.

So this speed limit is a limit of the particular physical interface, not of midi itself.

[maxpiano]

OK but since a Nord has to send MIDI both on USB and DIN, at an overall system level the max manageable speed is the one of the slowest interface (by definition).