Sound problems (clipping?) on SVCDs and VCDs

[NeonSign]

I've been backing up some of my DVDs to SVCD, and I've been experiencing problems with the sound, specifically that of the voices of people. It could be clipping, but it's like the sound goes all digital, kind of like in 'The Matrix' where Neo screams and just before being released from the matrix, and his voice goes all funny (sorry, that's the best way I can describe it). I'm not quite sure what does it; it doesn't seem to be certain volumes or frequencies or anything.

Now, being relatively new to SVCDing I'm not sure whether or not this is just a problem with the low quality, or whether I'm doing something wrong. I've done some converting of DivXs to VCD, played other VCDs and never had this problem though, so I am somewhat worried.

Anyway, the method I've been using is:
-Rip the DVD with SmartRipper
-Use DVD2AVI to create the D2V and WAV files
-Encode to SVCD with TMPGEnc Plus
Is there a problem with this?

One other thing I noticed is that, during scene selection with TMPGEnc the audio visualiser doesn't show much action, it only moves up and down a small amount. However, when I'm doing the same thing but with a DivX and a WAV (created using virtualdub) there's a lot more action on it.

For creating the SVCDs I'm using the default bitrate of 192kb/s; I really don't know how that could be a problem, but I thought I better mention it.

So, am I doing anything wrong? Or is this just a normal thing? Any help anyone can give me would be hugely appreciated.

Thanks!

[bugster]

This could be a problem with the sample rate conversion done by TmpGenc. DVD's use audio sampled at 48khz but (S)VCD uses 44.1khz. Depending on which exact version of Tmpgenc you are using there are several things you can do.

The latest versions of Tmpgenc have a tick box which you can select (somewhere in the settings, can't remember exactly) to turn on high quality audio re-sampling. It is slower than noormal though. Another option is to uses ssrc.exe as an external tool to do the audio resampling on behalf of Tmpgenc. Another possibility is to use a decent audio tool (such as goldwave, which is shareware) to re-sample the wav file to 44.1khz before encodeing.

Hope this helps.

[NeonSign]

I couldn't find the option to do it in TMPGEnc, but I did it in DVD2SVCD, and it seems to have done the trick. Thanks!