Re: [SoX-users] Sox on windows - getting started

[Paul M. <pm...@co...>]

Actually, the situation is that for some reason, audio imported through the
autoimport function usually comes in "hot" and it doesn't have an adjust
function unless I load each file manually...which negates the whole purpose
of automatic. :)

So, that's why I'm trying to drop the level some.  Perhaps normalize is not
what I want.  I just need to drop the level a few db first.

Also, I will need to convert mp2's to wavs.  I understand an mp3 is actually
mpeg2 layer III so if I build Sox with mp3 and libmad support, will that
achieve what I'm looking for?

Finally, in using the command line (within a windows batch file), if I want
to convert a file that is NOT in a sub folder of the SoX directory, can it
handle that.  I've only had success so far doing file.wav, not c:\another
directory\subdirectory\file.wav.

Thanks for all of your patience and help!

Paul


-----Original Message-----
From: Fmiser [mailto:fm...@gm...] 
Sent: Tuesday, June 15, 2010 2:39 AM
To: sox...@li...
Subject: Re: [SoX-users] Sox on windows - getting started

> Paul Martin wrote:

> Next on to normalize with the link you suggested.  One
> question, do you believe there will be any loss in audio
> quality doing the normalize?  Thanks again.

Strickly speaking, there will be rounding errors anytime a
file is manipulated, so there will be "loss" when the level is
changed.  But here in the real world, the loss is so tiny I
generally just ignore it. *smiles*

But a question.  Do you want it normalized so each of the
various files sound to a listener to be similar volume?  

Or are you wanting maximum signal level in the file?

For the first, I recommend using replay-gain processing to
calculate the amount of gain change.  There is a tool called
"wavegain" that can calculate only or calculate and change a
WAV file.  I don't know if it's available for MS Windows.

For the second, SoX works quite well.

--     Philip

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