Date: Tue, 26 Mar 2002 10:27:12 -0600 From: "John M. Fannon" <jfannon@gmotion.com> To: Gautham Ganapathy <gauthamg123list@myrealbox.com>, Peter Leftwich <Hostmaster@video2video.com> Cc: "FreeBSD.org - Questions" <questions@freebsd.org> Subject: Re: Audio CD without cable Message-ID: <B8C5FD80.E25%jfannon@gmotion.com> In-Reply-To: <014201c1d4a6$bef8a370$1901a8c0@itg.ti.com>
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On 3/26/02 3:14 AM, "Gautham Ganapathy" <gauthamg123list@myrealbox.com> wrote: > the problem is that there is no actual cable. the only connection between > the sound card and the cdrom is through the motherboard. soundcard to m/b > through the PCI slot and m/b to cdrom through the ide connector. i am not > sure exactly how it is done, unless windows is somehow reading the bits on > the audio cd and sending it to the soundcard > That's exactly what it's doing. I have used this feature for years in extracting perfect digital samples from cds. Think about it, why have so many wasted steps (other than freeing up some cpu cycles). The cd-rom forst reads the data off the cd, it goes thru That D/A converter (usually not great quality) then to be run in to the sound card (through an unsheilded cable in the middle of a computer case known for emitting all kinds of emf), then read back in the a/d to a digital signal (already we have some digital aliasing) and then back out through the soundcard to headphones/speakers/recording/etc.. Additionally, going the digital route allows for a software buffer, good for real-time (or at least near-time) effects. > > ----- Original Message ----- > From: "Peter Leftwich" <Hostmaster@Video2Video.Com> > To: "Gautham Ganapathy" <gauthamg123list@myrealbox.com> > Cc: "FreeBSD Questions" <FreeBSD-Questions@FreeBSD.Org> > Sent: Tuesday, March 26, 2002 11:44 AM > Subject: Re: Audio CD without cable > > >> On Tue, 26 Mar 2002, Gautham Ganapathy wrote: >>> Hi - How can I play audio cds without having the cable that connects the > cd-drive to the sound card ? I am able to do this using Windows Media Player > in Windows by using an option called Digital Audio. I'd like to know how i > can do this in FreeBSD. >>> Regards >>> Gautham >> >> When I installed a second CD drive (a CDRW) recently, I had to spring a >> lousy $5 bucks or so for that audio cable, but I hear the digital cable >> method is the *best* especially for DVDs and true sound... >> >> I would guess `man pcm` might lead you on the right path. Also try >> enabling the proper module (change NO to YES) in /boot/loader.conf >> >> -- >> Peter Leftwich Unfortunately, I haven't a CD-ROM on my bsd laptop, so I havent wrestled that problem into submission. Please CC me on any replies as I would be very interested in how to accomplish this! Thanks. John Fannon Webmaster/Systems Admin. Gmotion.com (901)795-0511 jfannon@gmotion.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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