Just started getting into programming the H8000 , but Im having difficulty doing a very simple thing .
Take a Reverb A module , an LFO and an A to C module . Trying to modulate the reverb decay using the LFO via the A-C module , but nothing happens . Is it even possible to modulate the decay ?
Another simple one , Comb filter and the same LFO & A-C module , modulating comb frequency , but the result is not even close to what I would expect . What am I missing ?
Be great if someone with some Vsig experience could point me in the right direction .

I am not in front of my H8000FW to test this, but make sure that the LFO has a rate of something like 1-2 Hz and that the decay in the reverb has something like 500 (default value is 1 as I can see, which is a very small value given the fact that the range is [1..1000]). If it doesn't do anything, you may want to multiply the depth of the LFO so that its effect is more prominent when it's doing its thing.

Other than that, modulating reverb decay is a little weird, in the sense that the results might not be easily distinguishable. Try sending the same LFO to a cutoff, just to make sure it's working properly.

The LFO works as expected when modulating filter , but when nodulating comb filter frequency and a number of other different things it doesnt behave as I'd expect . I'll try some smoothing / multiplying to see if I can get more predictable results .

Contact OurDarkness....
He knows the H8k like no other I have seen1

There should be a H8000 tutorial thread.

Between OurDarkness and Italo, there is two exteremly awesome H8000 power users on here.

This is a great idea . There isnt much out there on the WWW .

Thanks for the nice comment but Italo is far more proficient than I. I learn a lot from his FX.

Maybe we can all group together and get some tutorials / collective brain power or something.

I am in.
thumbsup

OurDarkness is in.

Roll up people, this could be a lovely opportunity to learn and share knowledge (or lack thereof in my case)

Well Im in , but my knowledge is nonexistent at the moment

What shall we design?

Shall we start from basics like ping-pong delays? or go into more advanced stuff?

Yeah simple stuff first , and then progress into the more complicated . How about ping-pong & tape style delay ?

can 7600 owners join this party?

Cool thread !!!

Anyone who has an ounce of Vsig knowledge

why not just join the existing Eventide forum(s) that deal with this and take advantage of all the users out there?

Eventide forums

Good idea , but sure it wouldnt hurt to have a GS resource for all that knowledge , and from what I've seen briefly over at the Eventide forums there arent a whole lot of threads related to Vsig programming .

me either but hellz yeah!

OK, let's do the ping-pong part first. This is the diagram of a ping-pong delay:



It is easy to deduce from the diagram what is going on, but in case it's not clear we have a signal (L) going into a delay line and getting mixed with the direct signal (the "+" sign). Feedback is established by sending the delayed signal to be mixed with the direct (R) signal of the other channel prior to being delayed.

Same things happen for the (R) channel, of course.

In direct analogy to the diagram above here's a first version of a ping-pong that I did some time ago:



However, things are not always what they seem. The above patch doesn't do what is expected to do. Uploading the patch to the H8000FW causes even the tinniest amount of noise to get progressively louder. Can you guess why?

Because you've created a feedback loop by connecting the out of each mod delay into one of the mix ins.

Feels like school all over again Thanks for the lesson OurDarkness

I must be missing something , it sounds just like it should , a regular ping-pong delay .

Exactly.

Feedback gets even the tinniest amount of noise and, by mixing it again with the original signal, the amplitude is increased until we get clipping.

Methinks that if we want to stick with this idea, we have to put some kind of threshold to prevent the noise from sneaking in. What do you think?

There is also another way of doing this, by using the stereo mixer which provides for amplitude modulation of the input signals. It's like having your hands on the sliders of a DJ mixer and boosting/cutting left/right sides, L(up), R(down), then L(down), R(up) and so on.

Does it? I must have f7cked up something. It wasn't supposed to sound ok.heh

Maybe I had something else in mind.

First thing I thought when u said 'noise getting progressively louder' but then I wired it up and it sounds like a perfect ping pong

Just wanted to chime in with a :

"Wow cool thread" and a "Thanks"

XJ

yes very COOL !!

I'm about to install VSIG for my orville and give it a try - looks fun :-)
(not sure witch modules -or what its name?- there is missing in Orville vs H8000)

good thread. i've been intending to VSIG my dsp7000 for ages.

I'm afraid of V-Sig heh