from looking at the env~ help file my guess is that you need to multiply the signal from the adc~ before env~ performs the analysis. try putting a *~ multiply object in there and see if you get anything happening. remember you can right click to get help for any object.
beem posted in technical issues • read more
Just to give an idea of the kind of resource I'm talking about; here is a rough version of the kind of entry that I can put together just using my bookmarks. Nothing too technical, just a collection of useful stuff put together in one place.
Reverberation (or reverb) is the effect generated by many copies of a sound with different delays summing together due to reflections off the boundaries of a space. In contrast to echo, the individual copies are not distinguishable but overall effect typically makes the sound richer or fuller.
Pure Data Vanilla comes with three reverb examples in the extras; in Help>Browser they should appear under ‘Externals’.
freeverb~ is a PD external offering ‘studio-quality Schroeder/Moorer reverb’
(example usage: https://guitarextended.wordpress.com/2012/01/24/reverb-effect-in-pure-data/)
- Tom Erbe’s reverb patches
(allpass, Schroeder, Moorer, Moore, Gerzon/Stautner/Puckett, Dattorro)
- Choucroute FX by coloscope
Tremolo/reverb effect : “harmonic tremolo” found in early 1960s amps.
- 282~ reverb (Ursa Major SST-282) by acreil / whale-av
- Freeverb Vanilla
Derekxkwan’s cleanup of Katja Vetter's Pd-vanilla freeverb abstraction
- ELSE library
Contains [mono.rev~], [stereo.rev~], [echo.rev~], [giga.rev~], [free.rev~]
PD Forum discussion of the subject: https://forum.pdpatchrepo.info/topic/11622/reverberation
Sound on Sound ‘Synth Secrets’ article on Reverb
See also: Delay/Echo, Resonators, Convolution
- Tom Erbe’s reverb patches
@oid it is certainly a bit frustrating to have such a lot of activity on the forum that seems to be just answering very similar beginner problems. I thought a wiki might go some way to answering questions that would otherwise be posted here.
It seems to me that there is a pretty active community - there is a lot going on over on the PD discord server for example and it is a shame not to have somewhere to share the results of all the research and good ideas there. There's also the mailing lists and the IRC chat - I don't know how busy they are.
Maybe the term Wiki summons up a negative idea for a lot of people; certainly the pdinfo wiki is not the kind of thing I am thinking of and I'm not imagining a sprawling documentation of every object. I guess I imagined just a kind of shared scrapbook - if I find an obscure web page that has some interesting pd reverb abstractions for example it would be nice to just stick a link in a PD Reverb page somewhere, and with a few people joining in it could be a useful resource.
@whale-av I agree that the forum has a wealth of useful information and is almost as good as a wiki but I don't find the search as effective as all that. Try searching for 'bass drum' to give a pretty random example; the forum search results don't throw up anything very useful as far as I can see, even though with google I see there are threads like https://forum.pdpatchrepo.info/topic/3532/bass-drum-synth to be found.
It's true that with a bit of googling you can usually find what you need. I just think a wiki would reduce the needless repetition of research and also have the advantage of offering up things you might not have thought of searching for.
As for the idea of no "absolute truth" with PD I don't see that as presenting a problem for a wiki - it wouldn't be a question of finding the definitive approach to a given technique or whatever, more like a scrapbook of the different ways people have tackled something.
@EEight I see the patchrepo and the Patch Storage resources as really useful but they tend to be a way of sharing 'creations' rather than simple solutions as far as I can see.
I'm happy to contribute to a resource list here or on another thread. Perhaps I can sketch out this wiki/scrapbook idea in some way (a google document or something) to give a better idea of what I mean...
Not really Off Topic but anyway...
Is it time for a real, neat, fully functioning Pure Data Wiki ?
It could be useful to have a place to collect patches or links to Pure Data examples, use them to illustrate different synthesis techniques, or applications of PD and so on. Some of the threads on this forum provide a good overview of subjects like reverb, granular synthesis or handling midi polyphony and it would be great to be able to summarize what's been worked out here and put it into a neat form somewhere.
Does this exist already somewhere? Would people be interested in contributing to something like this? Would it be useful?