Modules - 2 S&H - Dual Sample and Hold

I made this tutorial video to explain how the sample and hold module works and how to use it in a few simple patches.



You can view all my other tutorial videos on my website at the5thvolt.com/category/tutorials/getting-started/

nice video, i like the examples




I think its simpler to say:
the S&H samples (=reads) the input CV whenever it is 'triggered' by a rising edge on its trig input (0->5v), and outputs this voltage until it samples its input again, due to another trigger.

at 1:25 in your video you say, it samples on the first trig, and only outputs on the next trig - this is incorrect - it outputs the sampled voltgae immediately after sampling it.

the easy way to 'test this', use a constant voltage from 2att (set to 5v) into cv in, and a gate trig from a midi keyboard, cv out into a filter, you can see that the filter position will reflect changes on 2att, on soon as you press a key.

of course, at faster rates, this is all pretty unimportant - its only noticeable when you use it at slow rates.




anyway for those wanting to take these S&H ideas further, mylarmelodies has a great video...

ok, its not really about the gate, its just that a keyboard gate is a really good way to 'test' when things are triggering.
(since you can control when it rises, and when it falls ) 





badly drawn diagram... 
imagine a signal that goes 0 to 5v, it can be non-evenly space, like if you played a keyboard.
the S&H is only interested in the rising edge of that signal, where it goes from 0 to 5v (where ive marked with a caret (^)) 
when it sees this it 'samples' the voltage, and just holds it (and outputs it), then the next time it sees a rising edge it does the same,

(in reality, it doesn't even need  a square wave, it will use some kind of comparator, so it will say when ever the signal goes above a certain level (e.g. 2.5v) it will trigger a sample) 

in short form these are referred to as 'triggers' (as opposed to gates) - its when a module only cares about the transition from low to high (or rarely you can have falling edge triggers when it goes high to low)... and the key bit is, they module doesn't care about the falling edge, its only looking at the rising edge.

I think your description was pretty close, its just the sampled voltage is immediately output, it doesn't 'wait' for another trig to output that 'new' voltage.
(your description is close to what a shift register does) 

 

Aha! I think I got those mixed up. I love shift registers and would love to have one in the AE system.