Casio CZ/ VZ/ FZ - Pro Series

I am not sure I saved or bookmarked the MMA document that says that midi as a vehicle of communication is not limited to 31.25 kbps. I will look for it.

In case its not clear, I am not saying "Bullshit." Rather, I am agreeing that >>in the past<< gear makers (and hackers) used the 31.25 kbps as a convenience so that 5-pin din midi gear could communicate with all other 5-pin din midi gear.

However, this is not to say that future midi gear couldn't be designed and implemented with different connectors, perhaps faster opto-isolators (if they exist)--or even micro-processors with built-in serial devices, and considerably faster speeds. Rates could even be selectable. 

And there could be step-down devices so that older gear works with a newer system and is thereby not made obsolete.

With the arduino --> serial usb-midi bridge --> midi-ox --> e-mu 2x2 usb interface test I did, clearly something performed the step down. I am guessing it might well be the e-mu 2x2 (and its drivers), but I cannot think of a way to test that.

I suppose I could buy 1x1 usb-midi interface "cable" and run the same tests. If I find that sysex doesn't work properly but note and other data does, then it might not be the interface doing the stepping down. However, if the 1x1 fails, that would lead me to conclude its in the interface.

Anyone want to subsidize the research? How about try to replicate it?

Steve

 

--- In CZsynth@yahoogroups.com, Lee Borrell <templarser@...> wrote:
>
> 
> 
> Gordon is correct - the MIDI standard is 31.25 Kb - if there was any other speed,the MIDI equipment would not be able to read the signal- the baud rate is part of what is defined in a PROTOCOL - I should know - I teach IT!
> 
> 
> ________________________________
>  From: Gordon JC Pearce <gordon@...>
> To: CZsynth@yahoogroups.com 
> Sent: Thursday, 22 August 2013, 8:45
> Subject: Re: [CZsynth] Speed of sysex transfer
>  
> 
> 
> Â  
> On Thu, Aug 22, 2013 at 06:21:26AM -0000, fulfil_objective wrote:
> > Hi Steve,
> > 
> > I think you are too focused on these vintage numbers like 31250 bps and 115200 bps. Transferring sysex by USB and MIDI are not limited to these old numbers. USB enables speeds that are hundreds or thousands of times faster than these numbers. In fact, greatly higher speeds are touted as one of the benefits of a USB MIDI device (along with multiple streams).
> 
> Bullshit.
> 
> MIDI transfers data at 31250bps.  It doesn't matter how the interface is connected to the host or device, MIDI data is by definition 31250bps.  The interface may be able to talk to the PC faster than that, but you cannot send it to the target device at anything other than 31250bps.
> 
> -- 
> Gordonjcp MM0YEQ
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>  
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> [Non-text portions of this message have been removed]
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