Le Thu, 1 Feb 2007 16:15:20 -0800,"ronan mcallister" <bass.woofer@xxxxxxxxx> a écrit : > Bill, Sergei,> > Generally, I am investigating the limits/extent of what I can do with> Linux/Alsa/DSP as an alternative to commercial equipment in these three> areas:> > 1. the live concert scenario (we currently do everything analog now) -- as> previously discussed.> 2. home theater / hi-fi> 3. something I haven't mentioned before: using WinAudioMLS and RME 9632 as a> RTA (I know this will work) -- eg measurement/RTA for both home hi-fi and> prosound / live concerts.> > All of these to extend below 20Hz as far as I practically can.> Which instrument can play a note below 20 Hz? Even the biggest church organscannot do that. > Sergei, I will be digitizing my SACD audio output via a RME card etc as I> think you must be right about interfacing a SACD to Linux> directly/digitally... And I want an analog input/output capability if at> all possible as after all the real world is analog!> You must look at the alsa soundcard matrix:http://www.alsa-project.org/alsa-doc/ After, you must be aware of one thing: at alsa support analog input/outputcapability don't mean at the hardware is capable to output frequencies below 15Hz. > I'd like to think if I had LF response down to 5Hz, besides the> vibration through direct bone conduction, I might realize improved transient> and phase response in the audible range, resulting from the extended LF> response of my audio system. What do you think?>Technically speaking, this is the only point where a so low bass response willdo something good. But it is no speaker on the market that can do that. For what I know, the first subsonic experiences was made by the nazisduring WWII. They was torturing prisoners with subsonic frequencies. So becareful with it. In fact, even frequencies between 25 and 50 Hz can have aphysiological impact on the body, It is a very complicated matter because weall know at we don't feel the same after listening to a concert of hard rock orsalsa music. This paper can be interesting to you: Acoustic Weapons—A ProspectiveAssessment: Sources, Propagation, and Effects of Strong Soundhttp://www.einaudi.cornell.edu/PeaceProgram/publications/occasional_papers/occasional-paper22.pdf Ciao,Dominique -------------------------------------------------------------------------Using Tomcat but need to do more? Need to support web services, security?Get stuff done quickly with pre-integrated technology to make your job easier.Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimohttp://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642_______________________________________________Alsa-user mailing listAlsa-user@xxxxxxxxxxxxxxxxxxxxxxxxxx://lists.sourceforge.net/lists/listinfo/alsa-user
