Le dimanche 13 septembre 2009 à 15:57 -0700, Russell Hanaghan a écrit : > Hello LAU, > > While I have not been active on this list in a long time, I have been > watching from the side stage and it's nice to see the string of various > information and experience still flowing thru the LAU community. > > I'll get to my questions as they relate to the subject title in a sec > but firstly, a little back ground on some significant changes I have > going on and how they may relate to the furthering of open source audio... > > I have left the corporate grind and world of regular income for purposes > of pursuing my all time passion. I have not a pot to piss in nor a > window to pitch it out of in terms of capitol and am largely doing it on > faith! My core products are fretted instrument and amplifier / music > related electronics repair, recording and demos, small PA system rentals > and also working as a musician for hire, primarily doing my solo thing. > In another post I will speak to my dilemma of being unhappy using Sonar > 8 on Windows Vista and looking for some possible encouragement to > consider going totally open source! > > I have rented a large warehouse type space (2600'sq) in the Nth Cali > foothills and within there are several spaces dedicated to the various > products I alluded to. The main room that we do live music in is a good > size, approx. 30'w x 40'l with 17' ceilings. It's predominantly drywall > and stud construction and also with a 17'x10' metal roll up door. It has > a concrete floor with industrial carpet covering it. I have just > described something of an acoustical nightmare, likely only topped by an > aircraft hangar with corrugated iron walls and roof! :) We have been > doing some live stuff thru a PA in this room and it's a sure fire way to > reveal how the room reacts. The room produces some high freq (2k - 5k) > boosts as well as some 150 to 400hz bumps. While I have implemented some > baffles to reduce live high freq bounce, these only serve to deaden the > room and not change tonal characteristics. How I go about changing the > mechanics of the room will be dictated largely by economics but in order > to assess this, I'm looking to to some spectrum analysis. > > Has anyone set up a laptop and microphone and open source apps and > performed this to some success? I need a tone generation source as well > as an analysis tool. It needs some bias adjustment for mic and sound > card inherent response I should think. That said, it does not need to be > a perfect tool. If I can get some form of reliable, self referenced > measurement, that would give me something more than the guess work I am > currently using from my head and my ears. > > TIA for your input and ideas. > > Russell > _______________________________________________ Hi Russell Qloud might help you : http://gaydenko.com/qloud/ Even though not really designed for room acoustic measurements I am using it regulary as a powerfull helping tool for FOH setup and equalisation. Joël _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
