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Re: MIDI through ...or Out/Through

Matthias,
Regarding the numbers you mentioned about midi timing, if I recall correctly, it takes 1ms to read a midi message (at 31.250 baud), and another ms to send. Am I misunderstanding what you've written? 

-cpr

Quoting Matthias Grob <matilists@gmail.com>:


you are right Andy, I did not sell the without version at all :-)

sure I will merge the input to the output just like the EDP
I must that this ads a delay, which is small compared to laptops and older gear with slow processor or new gear that often runs with Linux because we have a 500MHz ARM processor without OS (they call bare metal programming now what we naturally did in the past, the EDP was even bare assembler :-), [ I hope we can treat everything within 8 audio samples = 180us (the EDP used 32, the laptops usually 64 or more) still, we need to let the 3 bytes come in to analyse and then send out again. MIDI is 1MHz: 1us/bit, 24us/message so its 24us to read, 180us to treat and 24us to write and we should stay below 0.25ms right? ]
but tradition says that in to out adds delay and it will be difficult to convince everyone with such calculations :-) 

another good argument for the thru might be that the out is ocupied
for example:
in - the pedal
thru - to another unit that is controlled by the same pedal
out - sync to some drum machine
the cost is not shocking. parts with drilling, soldering, testing probably adds less than 5$ to the end price 
its a rather big connector, I asked because I wanted to save space.
but it looks like the lack of the connector hurts more people than a 15mm longer box :-) 

thank you!
Matthias

On 12.Apr, 2014, at 10:06 AM, andy butler <akbutler@tiscali.co.uk> wrote:


well,
there *will* be a bunch of yes answers for a question put like this.

Lets remember that every feature has a cost, either $$$
or in terms of *other features*.

Question:-

For Evoloop, is there good reason why the midi Thru function.
can't be handled by merging the input to midi Out?

Is there a real need for a *dedicated* Midi Thru socket?


andy

On 11/04/2014 23:17, Louie Angulo wrote:

Yes yes yes midi thru!