Audio problem (volume louder and softer)

[Pater Noster]

I have the following problem: the volume of the audio of my rips will fluctuate a lot. I tried to use BeSweet Dynamic Compression to compensate this, but the bass in my audio gets too strong, it sounds like you just blown up your speakers or when you turn your boxes too loud...

This is really annoying. I normally use Graphedit and than Lame and as stated above, I tried BeSweet, but that didn't turn out the way I wanted it to have :(.

[DSPguru]

great avatar pater,
now, what about logfile (http://forum.doom9.org/showthread.php?s=&threadid=15738) ?

[Pater Noster]

Thanx for the compliment, DSPguru.

Here is my BeSweet command line:

"c:\Polaris\Download\SBCRippack\SBCRippack\BeSweet\BeSweet.exe" -core( -input "g:\DVD\new\vobs\db\vts_01.lst" -output "g:\DVD\new\vobs\db\007-cbr.mp3" -substream 0x80 ) -azid( -z1 -b1 -g max ) -boost( /b=5 /l=0.95 ) -lame( -b 128 )

Need to re-encode a second time, will edit this post soon with the logfile.

The system I am working on is a Pentium III MHz with XP on it.

[DSPguru]

ok, so here is your problem.
you're using a list, meaning you're joining different vobs into one mp3.
now, there are two possible problems here :
- if you used "-azid( -g max )" inside your list, each vob will be normalized indepenedetly and will have different volume.
- if your list only holds the input filenames, the "-azid( -g max )" in the commandline will pick a normalize volume according to the first input file, and might cause overflows with the other files.

try switching the -azid( -g max ) with -ota( -g max ) in the commandline, and don't set anything but filenames in your listfile.

[Pater Noster]

Well, it is not just a list.
It does it too with normal music (wav).

I uploaded one music file to my personal server (just download it and delete it afterwards, I am just offering you a sample of what I mean).
Download the file here: http://home.conceptsfa.nl/~pater/lennykravitz.mp3

Here is my Command line:
"c:\Polaris\Download\SBCRippack\SBCRippack\BeSweet\BeSweet.exe" -core( -input "c:\Onzin Programma's\Ripper\cc0c710e\ 01 Track.wav" -output "c:\Onzin Programma's\Ripper\cc0c710e\Lenny Kravitz - on top the world.mp3" -logfile "C:\Polaris\Download\SBCRippack\SBCRippack\BeSweet\BeSweet.log" ) -boost( /b=5 /l=0.95 ) -lame( -b 128 )

And here is my logfile:
BeSweet v1.11 logfile.
--------------------------
Logging start : 03/16/02 , 15:21:53.

c:\Polaris\Download\SBCRippack\SBCRippack\BeSweet\BeSweet.exe -core( -input c:\Onzin Programma's\Ripper\cc0c710e\ 01 Track.wav -output c:\Onzin Programma's\Ripper\cc0c710e\Lenny Kravitz - on top the world.mp3 -logfile C:\Polaris\Download\SBCRippack\SBCRippack\BeSweet\BeSweet.log ) -boost( /b=5 /l=0.95 ) -lame( -b 128 )

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : c:\Onzin Programma's\Ripper\cc0c710e\ 01 Track.wav
[00:00:00:000] | Output: c:\Onzin Programma's\Ripper\cc0c710e\Lenny Kravitz - on top the world.mp3
[00:00:00:000] | Floating-Point Process: Yes
[00:00:00:000] | Source Sample-Rate: 44.1KHz
[00:00:00:000] +-------- BOOST ------
[00:00:00:000] | Algorithm by : LigH
[00:00:00:000] | Boost Factor : 5.0
[00:00:00:000] | Limit Factor : 0.95
[00:00:00:000] +-------- LAME -------
[00:00:00:000] | Bitrate method : CBR
[00:00:00:000] | MP3 bitrate : 128
[00:00:00:000] | Channels Mode : Joint Stereo
[00:00:00:000] | Error Protection: No
[00:00:00:000] +---------------------
[00:03:58:235] Conversion Completed !
Logging ends : 03/16/02 , 15:23:42.

After 44 seconds you can hear it good.

[DSPguru]

sounds like your ears doesn't like the dynamic compression effect.
try to encode the song without the "-boost" field.

i will download the file later.

[Pater Noster]

If I remove the -boost field, I remove the whole Dynamic Compression range, aren't I?

What use has Besweet then? Because I thought that dynamic compression range could solve my fluctating audio volume. :confused:

[DSPguru]

i don't see a reason why you should compress the dynamic range of a song.
try only using -ota( -g max ) for the song.

[Pater Noster]

Well, it was not that I wanted it to use for a song, but I wanted to show you what the effect is of this Dynamic Compression Range. Because people say that is the trick to solve the fluctuating volume of audio-problem.

[DSPguru]

try using -azid( -g max ) -boost( /b=2 )

[Pater Noster]

Ok, ota( -g max ), I know how to set that one, but how do I set that -boost( /b=2 )?

[DSPguru]

in the boost screen at the BeSweetGUI. it's the boostfactor field.
i simply think your ears don't like that much of compression, so you should try to fine-tune to a lower value.

[Pater Noster]

Thanx! And thanks for the quick replies :)

You helped me out here :).