There is another option, cheaper than Xonar DX. Creative has relaeased PCI Express version of Xtreme Audio, which isn't based on X-Fi chip but on CA0110. There is some support in Takashi's sound-unstable tree. I'm not sure how well it works (let alone in regard to SPDIF support), hopefully Takashi will be able to answer that part.
2008/9/3 Jason Gauthier <[EMAIL PROTECTED]>: > > Jason Gauthier wrote: >> I can't find many cards except for the Creative Labs X-Fi that seems > to >> fit both.. and from what I read SPDIF passthrough doesn't work. I'm >> not 100% sure what that means. (Pretty new to this level of audio) > >>SPDIF was designed to transport two channels of 16-bit uncompressed >>audio at 48 kHz (this is 192,000 bytes per second). If you want to >>transport more channels (4.0/5.1/7.1), the data has to be compressed >>with a codec like Dolby Digital (AC-3) or DTS, and a special control > bit >>must be set in the SPDIF stream to indicated that the data is >>compressed. (Since nobody wants to pay for an encoder license, this is >>mostly interesting for DVDs, which the audio data already in compressed >>form.) > > > Fantastic explanation! > > I'm not 100% sure where that leaves me with my surround sound project > with Linux (and Myth) but it does leave me thinking quite a bit. > > Thanks, > > Jason > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- Vedran Miletić ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
