Suggestions for high-quality audio recording?

Brian Behlendorf brian at hyperreal.org
Mon Aug 18 23:21:04 PDT 2003


I'd like to use my -STABLE system for recording line-level audio, leaving
the A/D conversion to something *other* than the crappy A-D conversion
done by most sound cards or motherboards with built-in sound.

I've searched the freebsd.org mail archives to see whether anyone's been
able to record with any sort of USB Audio device (using uaudio) and it
doesn't look good.  Another option is that the motherboard I've currently
got in my workstation in the office claims to support S/PDIF in, so an
offboard A-D converter might work - but I have no idea whether the S/PDIF
in is actually supported or not, nor what bitrates it'll understand.

Here's all dmesg tells me:

pci0: <unknown card> (vendor=0x8086, dev=0x24c3) at 31.3 irq 5
pcm0: <Intel 82801DB (ICH4)> port 0xe400-0xe43f,0xe000-0xe0ff mem 0xec182000-0xec1820ff,0xec181000-0xec1811ff irq 5 at device 31.5 on pci0
pcm0: <Realtek ALC650 ac97 codec>

Right now, though, I can't even get this card to record off the mic in.
Sigh.  Plays fine, though.

My Sony Vaio laptop can record from the mic, but only mono.  Its dmesg
says:

pci0: <unknown card> (vendor=0x104d, dev=0x8039) at 8.0 irq 9
pcm0: <Yamaha DS-1E (YMF744)> port 0xfc8c-0xfc8f,0xfcc0-0xfcff mem 0xfedf8000-0xfedfffff irq 9 at device 9.0 on pci0
pcm0: <Asahi Kasei AK4543 ac97 codec>

Anyways, recommendations/suggestions welcome.

	Brian



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