Audio Problems

snowbeach · 11th May 2002, 15:10

Why is the encoded audio following the Doom9 instructions - AC3 created by DVD2AVI 1.76 -> WAV created with Azid 1.8 -> MP3 LAME encoded - not as loud as the original DVD sound?
While the audio encoded with GraphEdit (Doom9 Guide: http://www.doom9.org/graphedit_mp3.htm) is as loud as the original!

THX!

Fox Mulder · 14th May 2002, 10:30

Please be more especific about the way you do it, like what parameters you used and how do you listen to the original.

snowbeach · 16th May 2002, 00:11

I use Windows Media Player (WinXP Pro) for comparison!
The DVD sound is as loud as the MP3 file created by GraphEdit (CBR 128k), but not as loud as the the way I encode with DVD2AVI, Azid and LAME as follows... Why?

1. DVD2AVI 1.86 decoding - I select the appropriate audio track from the list, then I go to the Dolby Digital submenu and select Demux. -> AC3-file
2. Using Azid 1.8 with the following parameters -z1 -b1 -c normal -L -3db -> WAV-file
3. And then using Lame 3.92 with the parameters --alt-preset128 -> MP3-file

DSPguru · 17th May 2002, 06:19

to maximize the volume of your track, use the --maximize switch of azid.

btw :
http://doom9.org/ac3tomp3.htm

snowbeach · 17th May 2002, 12:35

THX for the tip, it works fine.

Ok, I am so curious, what is then the difference in the procedure of the GraphEdit filters (attached) vs. Azid that the sound with Azid is not as loud as the orginal DVD audio? While, as I said before, the sound created with GraphEdit is as loud as the orig.
Is this only a mystery on my pc?

Or does anybody experienced something similar?

11th May 2002, 15:10	#1 \| Link
snowbeach Regional Support Join Date: Apr 2002 Location: Ground-Zero Posts: 214	Audio Problems Why is the encoded audio following the Doom9 instructions - AC3 created by DVD2AVI 1.76 -> WAV created with Azid 1.8 -> MP3 LAME encoded - not as loud as the original DVD sound? While the audio encoded with GraphEdit (Doom9 Guide: http://www.doom9.org/graphedit_mp3.htm) is as loud as the original! THX! __________________ MPEG-4 XviD Koepi 24062003-1 Encoder Guide

14th May 2002, 10:30	#2 \| Link
Fox Mulder Registered User Join Date: Oct 2001 Location: Argentina Posts: 215	Audio Problems Please be more especific about the way you do it, like what parameters you used and how do you listen to the original. __________________ Use the force: http://forum.doom9.org/images/top_search.gif AMD Athlon XP 2000+(m.8), ASUS A7V333, 256MB DDR-SDRAM PC2100, ASUS V9180 TD GeForce4 MX 440 AGP 8x, LG GCE-8160B 16x10x40x CD-RW, Pioneer DVD-ROM DVD-117, SB Live! MP3+, Windows 2000 SP2. "The M.P.A.A. is out there"

16th May 2002, 00:11	#3 \| Link
snowbeach Regional Support Join Date: Apr 2002 Location: Ground-Zero Posts: 214	I use Windows Media Player (WinXP Pro) for comparison! The DVD sound is as loud as the MP3 file created by GraphEdit (CBR 128k), but not as loud as the the way I encode with DVD2AVI, Azid and LAME as follows... Why? 1. DVD2AVI 1.86 decoding - I select the appropriate audio track from the list, then I go to the Dolby Digital submenu and select Demux. -> AC3-file 2. Using Azid 1.8 with the following parameters -z1 -b1 -c normal -L -3db -> WAV-file 3. And then using Lame 3.92 with the parameters --alt-preset128 -> MP3-file __________________ MPEG-4 XviD Koepi 24062003-1 Encoder Guide

17th May 2002, 06:19	#4 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	to maximize the volume of your track, use the --maximize switch of azid. btw : http://doom9.org/ac3tomp3.htm __________________ FAQs : BeSweet, Audio :readfaq: Homepage : DSPguru's Webpage http://dspguru.notrace.dk/cs.gif Guides : Multilingual Guides of my tools http://dspguru.notrace.dk/1zhelp.gif

17th May 2002, 12:35	#5 \| Link
snowbeach Regional Support Join Date: Apr 2002 Location: Ground-Zero Posts: 214	THX for the tip, it works fine. Ok, I am so curious, what is then the difference in the procedure of the GraphEdit filters (attached) vs. Azid that the sound with Azid is not as loud as the orginal DVD audio? While, as I said before, the sound created with GraphEdit is as loud as the orig. Is this only a mystery on my pc? Or does anybody experienced something similar? __________________ MPEG-4 XviD Koepi 24062003-1 Encoder Guide

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