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Larry Sanders
2004-12-13, 12:01
Hello.

I'm pretty excited about my new Squeezbox, and participating in this
forum. It seems like a great community, based on the archives I've
read.

My first question for the comunity: What is the best place to tune the
volume in the whole process of ripping, compressing, and listening to
music with a SB? I'm using digital coax from my SB to home theater
processor and use FLAC exclusively.

Is any quality lost if you adjust the volume digitally at any of the
folloing steps?

-When ripping the CD to .wav.
-When compressing the .wav to FLAC. (Does the FLAC just ad a tag that
with a suggested playback level, or alter the digits to be
louder/softer?)
-On the SB/slimserver when listening. (What's the difference if you
are using digits vs analog outputs?)

Jason Holtzapple
2004-12-13, 12:49
Larry Sanders wrote:
> Hello.
>
> I'm pretty excited about my new Squeezbox, and participating in this
> forum. It seems like a great community, based on the archives I've
> read.
>
> My first question for the comunity: What is the best place to tune the
> volume in the whole process of ripping, compressing, and listening to
> music with a SB? I'm using digital coax from my SB to home theater
> processor and use FLAC exclusively.
>
> Is any quality lost if you adjust the volume digitally at any of the
> folloing steps?

If dynamic range is part of "quality" ...

> -When ripping the CD to .wav.

yes. I'd suggest not altering anything at this step.

> -When compressing the .wav to FLAC. (Does the FLAC just ad a tag that
> with a suggested playback level, or alter the digits to be
> louder/softer?)

no. flac by itself is completely lossless. You can use the metaflac
option --add-replay-gain to add replaygain tags to your flac files.
see http://www.replaygain.org/ for an explanation. Adding these tags
won't change the original audio.

Note that slimserver doesn't support these replaygain tags by
default, but you can create a custom entry in your convert.conf
file to handle them:

flc wav * *
[flac] -dcs --force-raw-format --endian=little
--sign=signed --apply-replaygain-which-is-not-lossless=a --skip=$START$ --until=$END$ $FILE$

> -On the SB/slimserver when listening. (What's the difference if you
> are using digits vs analog outputs?)

not sure about this one.

Kevin O. Lepard
2004-12-13, 13:02
Congratulations on your new Squeezebox. You'll find a lot of
enthusiasm on this list, and most of us think the Squeezebox is the
best thing to happen to our music habits since the CD. :-)

I think the best place to adjust volume is with your amp/tuner
(whatever) when playing the music. Ripping and encoding to FLAC or
MP3 should not affect the volume unless you tell your software to
normalize it. I would not normalize the data at any point. You can
add tags to the music that will "normalize" it without effecting the
data itself. You are correct that FLAC can be made to do this. I
haven't encoded my stuff to FLAC, so I can't be specific in the
details of how to do this.

I don't use the Squeezebox to control volume. I set the output at
maximum and fixed it so the volume buttons don't do anything--this
keeps the family from alternating the output (and thanks again to kdf
for showing me this).

HTH

Kevin
--
Kevin O. Lepard
kolepard (AT) charter (DOT) net

Happiness is being 100% Microsoft free.