Hi, onsdagen den 26 januari 2005 16.13 skrev Mark Constable: > Steve Harris wrote: > > Well, I'm not a reverb expert, but my impression is that convolved > > reverbs are the way to go*. The actual code is relativly simple, and we > > allready have open source examples, and its possible for people with > > decent recording equimpent and access to spaces with interesting > > acoustics, or artificial reverb units to capture thier own impulses. They > > can also be synthsised using a method similar to raytracing. > > Sounds encouraging. Surely there is a really obvious and > common set of a dozen or so presets that would cover 90% > of most users needs ? > > To me, the main need for a highly configurable interface > is because there is no obious "Hall 1" thing to click on > so, sure, we need reverbs interfaces with lots of intricate > and barely understandable options... if these mythical presets > were well targetted and convincing then most folks would not > need to understand the inner sanctum of audio engineering > to have some half decent onboard reverb. > > > The downside is that the parameters you can control are very limited, and > > it burns quite a lot of CPU power, and there can be latency. The upside > > is that the sound can be very good. > > Most encouraging. Some years ago I experiemented quite a lot with brutefir and the result can be extremely good, though very CPU consuming... And if I understand things correctly, unless Lake DSP's patent can be circumvented or proven invalid (Oh, I think it's already been proven invalid, but not in a legal sense...IANAL) we will have a hard time getting the CPU-cost down. Still brutefir is a working OSS solution that plugs into jack, no guis though ;-). If anyone wants to experiment there's always http://noisevault.com/ with plenty of impulse responses. I've got some config files for brutefir also, if anyone is interested. It's kind of tricky to get going though... Regards, Robert > > > There is an obivious technique to prevent any latency problems, but bits > > of it are probably patented by Lake DSP, though the situation is a bit > > murky. > > > > If I had more time I'd like to take the code in brutefir and make it into > > a DSSI plugin with a simple dropdown select-an-impulse, set gain type > > interface. > > Sounds like a plan. > > > I have a sizeable library of impulses, but unfortuantly I dont know the > > provenance of many of them. > > Uhm, what's that mean in English :-) > > > * In the interests of full disclose, I have an addiction to convolution > > that should be decalred :) > > Sounds like a safe enough addiction... Steve, what would you > outline as the most direct path to solving the general problem > of not having decent open sourced reverb code under linux ? > > In my wildest dreams I'd like to think "we the community" > could get it together to even fund an effort like this to > ensure "we" have a solution sooner than later. I mean, it's > going to cost me, and anyone else, quite some dollars to > buy decent hardware so it makes practical sense to me to put > those dollars into an open sourced solution that is then > available to everyone. Pay once, use everywhere. > > --markc -- http://spamatica.se/music/
