Originally Posted by 8bitbubsy
No offense, but that's fact in many situations. MODs are often 8kHz 8 bit samples upsampled with no interpolation
Upsampling is a necessary evil when outputting at a sample rate matching that of the audio source is not possible. You gain absolutely nothing by upsampling, plus, proper interpolation in these cases is not intended to "enhance" the original sound but to make it seem like it wasn't being upsampled.