Re: [linux-audio-dev] deconvolver for IR creation anyone?
I would be interested in this project too. What I'm looking for is actuallay an anti-reverb that will be able to cancel reverbs in a listening room, well always in conjunction with the listener position. The other useful thing would be a phase-filter to correct the phases coming out from a two or three way loudspeaker to get clarity in the sound similar to high-end speakers. I'm surprised that you mind modern consumer soundcards not linear, after all the sigma-delta converters used in most of todays soundcards are supposed to be perfectly linear and it was one of the reasons of their adoption. Apostolis Uwe Koloska wrote: Hello, I am looking for a deconvolver, that is able to produce impulse responses from sinus sweeps (and especially the exponentially sweeping sine wave introduced by Farina). Do you have any suggestions or at least tips to start an implementation by myself? Recently I managed to use the mls tools from nwfiir to produce an IR of my microverb. I had to learn the hard way, that simple soundcards are not able to be used as MLS source because of the non linearities. Even a simple DA-AD loop gives a result wave that mls2imp cannot cope with. But an empty loop with an US-122 (unfortunately not with linux for now) gives something very near to a dirac impulse! The hunt for the linux convolution reverb has started ;-) Uwe
Re: [linux-audio-dev] Re: simple jack-client [jack-net-cat]
I would ask the following question.. Since syncing two different cards is a problem due to clock inaccuracy, why don't we just add a sample or two to the fastest card every so when the cards become out of sync. This would mean probably duplicating (or interpolating) a single sample on the fastest card to slow it down. It will be completely inaudible. The frequency this happens shold be every 20-30 seconds, after doing some calculation with 44100 sampling rate, 64x oversampling and 5 PPM (point per million accurate crystals). Florian Schmidt wrote: On Thu, 27 Nov 2003 10:24:38 + vanDongen/Gilcher <[EMAIL PROTECTED]> wrote: Have you seen this: http://gsd.ime.usp.br/~lago/masters/ It is a networked LADSPA plugin. Maybe it could be made into a jack system. What would be nice is to have something like your net client on one computer, and a network jackdriver running the jackgraph on a different computer. You do get one period extra latency between the two graphs. Yes,this would also solve the issue that two jacks on different computers use a different sample clock and of course drift becomes a problem over time. If the network jackdriver running the jackgraph on the second machine is not sample synced to a soundcard but is rather in some sort of freewheeling mode, processing as fast as it can, then this wold not be an issue.
