On Sat, 16 Dec 2006 10:36:03 +0100 Dominique Michel <[EMAIL PROTECTED]> wrote:
> Le Sun, 29 Oct 2006 13:52:52 -0500, > Lee Revell <[EMAIL PROTECTED]> a écrit : > > > On Sun, 2006-10-29 at 15:44 -0300, Salatiel Filho wrote: > > > Hi guys, i have two sound stereo cards on my machine and i'd like to > > > know if it is possible play the same sound in both at same time. > > > I'm not talking about virtual 4 channels sound cards , i just want , > > > > > > > > > Channels : > > > Left on card 0 = left on card 1 > > > right on card 0 = right on card 1 > > > > > > > > > Could anyone provide me a sample to put on my asoundrc ? > > > > Cannot be done easily. The two cards will consume data at different > > rates as their clocks will not be synced. > > > It can be done if you have some hardware skills and exactly the 2 same sound > cards. For that, you must use the sync of one card for the 2 cards. It mean to > remove the quartz on one card and sold a little coaxial cable from the quartz > on the first card to the removed quartz on the second card. > > Such quartz have 3 pins: input, ground and output. The shield of the coaxial > must be connected on the ground of one card but free at the other extremity > (it will do a ground loop if you connect both ends), the central wire must be > connected between the output of the quartz to the input of the removed quartz. > > Done blame me you your(s) sound card(s) goes broken after such a modification. > (It is impossible to know if it will work and if the IC on the first sound > card > will be able to drive 2 cards without to try it...) Note at the parasitic > capacitance of the coaxial cable will modify the frequency a little, so use a > low capacitance cable. > > Dominique > > > You could set up 2 instances of JACK, run one for each card and connect > > them with netjack or jack_diplomat, but that will only allow you to run > > JACK-aware apps. > > > > Lee > > > > > > ------------------------------------------------------------------------- > > 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 Geronimo > > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > > _______________________________________________ > > Alsa-user mailing list > > Alsa-user@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/alsa-user > > Dominique, I am not sure I understand exactly what you mean, but if it's /---------------\ | | |------------------|----+----|------| \----|------------------| | card_1 generator | | XTAL | | card_2 generator | |------------------|----+----|------| /----|------------------| | | \---------------/ , then most likely it won't work - because nobody can be shure that the two generator circuits connected in parallel will work. Some generator circuits allow XTAL-less operation with external clock, but then it's not the above diagram. --Sergei. -- Visit my http://appsfromscratch.berlios.de/ open source project. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
