However I'm now experiencing more clipping which is obviously attributed to the lower lowpass.
Perhaps this information may help you set a proper setting for your lower bitrate commandlines.
Should I not use normalization? I'm currently setting the normalization to 87% if the maximum sample in the wav file exceeds 87% to avoid clipping completely. That's why I'm not using the scale function in LAME to simulate a normalization. This is because the scale function will treat every file with the scale even if it doesn't exceed a level which could cause clipping. Hence a wav file with a peak sample of 70% would lose 13% of it's volume unnecessarily.
Originally posted by Dibrom If you want to get rid of clipping, use mp3gain.. its lossless and it will handle this thing better.