Hello Loki, On Fri, December 5, 2008 00:17, Loki Davison wrote: for the other question see the answers to Julien. Regarding this last one, well, the effort may be quite huge, or a breeze, depending on your skill in DSP, computer science, Linux and so on. Considering the average partecipant to this list I expect this to be biased towards the second option. :) For sure it's cheap: DRC is free, a decent mic is just few bucks, if you already have a PC and a decent soundcard you're ready to go. The improvements depends on your starting point. With an high quality audio system placed in a heaviliy damped and properly treated room the difference migh be no more than a refinement. Nevertheless it might be worth the effort even in an excellent room. For example this is my current, heavily damped, dedicated listening room: http://itchef.infotecna.it/ListeningRoom/Foto/ This is, for example, the RT60 of the room: http://itchef.infotecna.it/ListeningRoom/RT60-25ms-30dB.png which is close to optimal. For a while I dreamed about getting rid of the active correction, which is after all another issue to deal with. I did everything conceivable to get the best results without DRC. After a while I gave up, DRC is still there, and I changed my approach. Instead of trying to get the best without DRC I configured everything to get the best with DRC in place. Here you can find the (almost) final results: http://itchef.infotecna.it/ListeningRoom/Misure/ Since those measurements there have been further refinements to the DRC configurations, but the differences are minimal, the basic results are all there. Bye, -- Denis Sbragion InfoTecna Tel: +39 0362 805396, Fax: +39 0362 805404 URL: http://www.infotecna.it

Thanks Denis! I'd mostly want to use DRC for recording correction. I consider the mic to be in the same place always and me roughly being in the same place. For good listening I suppose I still have the best solution with my headphones. So do I still need one of the mentioned microphones or would mine suffice? Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

On Fri, Dec 05, 2008 at 12:32:42PM +0100, Denis Sbragion wrote: I guess Julien means removing the room's contribution from a recording made in that room. It *should* be possible, using similar techniques as for normal room correction, provided the source is in a fixed position. Suppose you set up a microphone to record a solo voice. Put a speaker at the place where the singer is going to be, measure the IR, and invert. This still requires a flat reference mic to remove the contribution from the speaker. Ciao, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Lascia la spina, cogli la rosa.

Hello Fons, On Fri, December 5, 2008 13:44, Fons Adriaensen wrote: ... now I get it, but I fear this is going to be quite critical WRT to positioning. There are dereverberation algorithms, used for example for remote conference systems, but most of them are adaptive, i.e. they continuosly update the filters to reflect any change in the reverberant environment. Bye, -- Denis Sbragion InfoTecna Tel: +39 0362 805396, Fax: +39 0362 805404 URL: http://www.infotecna.it