On Sunday 27 November 2005 17:18, Brian Foddy wrote: > On Sunday 27 November 2005 04:10 pm, Steve Adeff wrote: > > On Sunday 27 November 2005 16:26, Michael T. Dean wrote: > > > Steve Adeff wrote: > > > >On Sunday 27 November 2005 14:19, Brian Foddy wrote: > > > > > > > > > > > >If you require bit-perfect SPDIF output (DVD's 5.1 HDTV) get a > > > > Chaintech AV710, they can be had for $25 from newegg > > > >http://www.newegg.com/Product/Product.asp?Item=N82E16829120103 > > > >it does true 192/24 (which NONE of the Creative chips do) and does > > > > true bit-perfect optical digital output. > > > >Heres a thread about using it in linux: > > > >http://mysettopbox.tv/phpBB2/viewtopic.php?t=4132&; > > > > > > > >really, any of the ENVY24HT based cards are what you want for > > > > bit-perfect, there are a few out there, with varying levels of SPDIF > > > > support (in/out, optical/coax) and with DAC of varying levels of > > > > quality. Google is your friend in this regard. > > > > > > What exactly does this mean? If you're doing AC-3 passthrough from > > > Myth, won't the S/PDIF output be as bit-perfect as was sent to you by > > > the digital TV broadcaster/DVD production house? Or, are you saying > > > that some sound card's mangle the stream they're attempting to pass > > > through? > > > > > > Mike > > > > Yes, 'mangle', because the chipset will do freq/bitrate conversion if > > needed to match the abilities of the output circuitry. If the output > > circuits can handle 24/196 then no change is needed and the chip just > > sends out the signal. Creative's output circuits can't handle 24/196 so > > the signal gets reprocessed to match its output (20/92 iirc). This is > > whether the signal is DD/DTS or PCM. > > That's a bummer. So either I need to look for better quality > onboard sound, or reserve a pci slot for a card... > > Brian
No onboard sound cards are bit perfect, so yes, you would need a spare PCI slot if you care about bit-perfect output. Steve _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
