[LUNI] recording audio to cd

[Richard Lynch]

On Mon, December 11, 2006 6:59 pm, Mark Stuart Burge wrote:
> Any suggestions for recording about 30min or more of audio through
> jack
> + jamin and then burning the result to cd in a few simple steps ?

I don't know nothing about jack or jamin, but I do record audio for
hours on end every night with Linux...

We pretty much just use "record" which is a command line tool that
takes the audio straight from the sound card to the hard drive at CD
quality.

It's pretty much a no-brainer:
record -o filename

You get an ASCII art 2-channel output of what's going to the hard drive.

You can skip to a new file by hitting "N" so you can turn them into
tracks on the CD.

After you quit, you'll have:
filename000.wav
filenamn001.wav
filename002.wav
.
.
.
with a new file number for each time you hit "N"

Then just use "cdrecord" to burn the CDs -- or "burncd" I think also
works fine.

cdrecord is a bit involved, in that you have to specify the CD drive
and you have to give it permission to "pad" the audio files out to an
even multiple of [mumble some silly number] so it can be a RedBook CD:

cdrecord dev=0,0,0 -pad -eject filename*.wav

dev will be like 0,0,0 or 0,0,1 or 0,0,2 or... 0,0,7 or 0,1,0 or 0,1,1...

It's the SCSI system of numbering.

Ooooh.  And you have to add the Linux ide-scsi thingie.
/sbin/insmod ide-scsi

But that's a "do it once and forget it" type of thing.

Note that the -pad option will add some digital silence to the audio
files to "pad" them out to make them the even multiple required by
audio CDs.  I think newer versions of "record" might have a "T" key or
something where it will force the break to happen at an even multiple,
so that no padding is needed...


I believe I have linked to all of these tools and have a bit more info
here:
http://uncommonground.com/sound.htm

> I am currently using ardour, but it involves too many steps to get to
> the wav file.
>
> Tried timemachine (great program, but saves data in an uncommon form
> of
> wav or w64 file which seems incompatible with k3b or gnomeburner)

Is w64 64-bit wav???

> Audacity is still problematic with Jack (at least on ubuntu it is)
>
> Rezound stalls trying to redraw the waveform on large files.
>
> Maybe there is a command line option where I can convert from w64 to a
> raw file and then burn it ?

sox would almost for sure convert w64 to regular wav.

sox converts damn near any audio format to whatever you want.

> Would be great if the burning software could include an option to read
> from an audio stream !

This would generally lead to buffering overrun/underrun problems
somewhere in the chain...

Maybe on super-high-end hardware with lots of tweaking and a ton of
research, you can make it work, but I wouldn't recommend you head down
this path...

-- 
Some people have a "gift" link here.
Know what I want?
I want you to buy a CD from some starving artist.
http://cdbaby.com/browse/from/lynch
Yeah, I get a buck. So?