[sdiy] wireless patching

[rsdio at audiobanshee.com]

RTP-MIDI wouldn't have the same bandwidth limitations. Perhaps an ethernet port or even WiFi would be a better choice than Bluetooth.

Note that modular CV is often DC, or very slowly changing values. In that case, the bandwidth limitations of any given MIDI transport are not as much of a problem. Sure, if you tried to update every channel ten thousand times per second, then your signals would get backlogged. In other words, if you send a MIDI message only when a signal changes, then you can handle lots of controls even with limited bandwidth.

Brian


On May 25, 2017, at 6:40 AM, Tom Wiltshire <tom at electricdruid.net> wrote:
> …and the great thing is, if you send 528 14-bit controls over MIDI, you won't even have to worry about Bluetooth not being realtime, because it'll take so long it'd be faster to write the data on a snail's shell and send it across the room!
> 
> I'm sure there's a way to do this, but I doubt the common wireless things are the way to go. They mostly seem to be aimed at communicating small amounts of data in short packets. I'd be looking for something more like wireless streaming of multitrack audio.
> 
> Tom
> 
> On 25 May 2017, at 06:52, rsdio at audiobanshee.com wrote:
> 
>> Hey Quincas,
>> 
>> MIDI is not limited to 128 steps!
>> 
>> Pitch Bend always has 16384 steps, and there are 32 Continuous Controllers with both MSB and LSB for 16384 steps. Mod Wheel is one of those 32 CC numbers. Across all 16 channels, that makes a total of 528 controls on a single MIDI cable that each have 16384 steps. This is all standard MIDI 1.0 specification.
>> 
>> I'm not familiar with MIDI over Bluetooth with regard to latency or any limitations in resolution that might be specific to Bluetooth, but I don't see how MIDI resolution could be any different over Bluetooth than any other medium.
>> 
>> Brian Willoughby
>> Sound Consulting
>> 
>> 
>> On May 24, 2017, at 9:14 PM, Quincas Moreira <quincas at gmail.com> wrote:
>>> Thanks Justin. I'd like to build something from the ground up, with hopefully way better resolution than 128 steps, but thanks for joining in on the brainstorming :)
>>> 
>>> On Wed, May 24, 2017 at 11:11 PM, Justin Herrmann <ebn303afxcut at email.com> wrote:
>>>> Hey Quincas,
>>>> 
>>>> Roland's A-01 sound module can receive MIDI over Bluetooth LE. I'm not sure what the data rate is. You could turn CVs into pitch bend or mod wheel MIDI messages maybe. 
>>>> 
>>>> Just spitballing.
>>>> 
>>>> Justin