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Serious loss in sound quality after burning CD
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MarcS
Newbie
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1. August 2003 @ 12:25 _ Link to this message    Send private message to this user   
When I want to burn my wav files to CD using Nero (5.5.7.8) the sound gets distorted. In general the 'body' or lower frequency of the sound is diminished and I hear distortions in the mid/high frequency range. (some sort of clipping?) I tried to burn at lower speeds but the problem remains. I've never had this problem before. Does anyone have a clue what the problem is?
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Senior Member
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4. August 2003 @ 05:14 _ Link to this message    Send private message to this user   
Where are you getting the wav files from?
It sounds like they are the culprit here, possibly due to too much compression or limiting, maybe even bit truncation.
Can you give me some more details please?
MarcS
Newbie
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10. August 2003 @ 05:05 _ Link to this message    Send private message to this user   
I get them from DVD. Firstly I rip the DVD and then Demux the audio track(s) to WAV using DVD2AVI. When I listen to the WAV's on the comp there's no problem, but when I burn them on CD, the sound gets distorted.
MarcS
Newbie
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10. August 2003 @ 05:12 _ Link to this message    Send private message to this user   
Additionally, using a different route (e.g. demuxing to the original audio format (AC3) using DVD2AVI converting to MP3 using BeSweet and then burning to CD) gives the same result: MP3's are fine, CD is distorted.
Senior Member
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10. August 2003 @ 06:29 _ Link to this message    Send private message to this user   
This sounds like artifacts in the audio streams. It could be baused by 2 things - either the original Dolby Digital conversion for the DVD, or more likely turning these files back into WAV for burning to CD Audio is showing up all the problems inherent in using any form of lossy compression.
Can you email me an extract of some of the original AC3 and your converted .WAV files please, and I'll take a closer look at them for you.
neilwilkes@opusproductions.com
filesizes are unlimited on my server, so don't worry about that.
minix
Junior Member
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10. August 2003 @ 10:55 _ Link to this message    Send private message to this user   
AFAIK, Nero can't burn anything different from 44,100Hz-16bits-stereo WAVs.

Can the burned discs be ripped to WAV and sound correctly?
In this case, the problem is between your player and media.
Have you tried another burning software? It shouldn't make a difference in audio quality, but... Feurio is clean and better than Nero.
MarcS
Newbie
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10. August 2003 @ 12:42 _ Link to this message    Send private message to this user   
The WAV's that I have made are 48.000 KHz, 16 bit, stereo. However, when I convert directly from AC3->MP3 and then burn with Nero I have the same problem...
Secondly, ripping the cd back to wav gives a wav with bad sound quality.
Anyway, I will give Feurio a try and see what happens.
MarcS
Newbie
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10. August 2003 @ 13:04 _ Link to this message    Send private message to this user   
I just resampled the wav to 44.100 KHz and burned it with Nero and it seems to do the trick. I can't hear any distortions anymore on the CD. I'll be off resampling the rest of the wav's :-)
Thanks for the tip!
Marc
minix
Junior Member
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10. August 2003 @ 15:45 _ Link to this message    Send private message to this user   
so Nero accepts the 48KHz WAV, and then it burns it incorrectly... amazing.

If you want a burning software that resamples those WAVs "on the fly", you can use Feurio, but I don't know the quality of the used algorithm.
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cd-rw.org
Senior Member

4 product reviews
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11. August 2003 @ 04:16 _ Link to this message    Send private message to this user   
I remember reading about this some time ago.

Most CD-R programs fail to resample audio 48-44.1 succefully on the fly. I recommend using the SSRC tool (http://shibatch.sourceforge.net/) or similar for the conversion.

The old school is back. All hail the new http://BitBurners.com !
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