This strange fixation with audio fidelity has always irked me. Being an audiophile with a pretty decent stereo system I know the joys of convincing sound, but also am aware of the common mantra that the source is above all. For instance, the gaussian filter of the SNES, which produces a markedly more fuzzy sound than a pure signal would, actually hides the many flaws inherent to the audio samples. The games tend to sound best this way, at least to my ears, as compared to more clean filtering methods such as cubic. The age old argument about developer intent (see composite, scanlines etc.) springs to mind.
Now, humans are on average more visual creatures, so it is natural that most of the energy spent creating an ‘authentic’ retro gaming experience has gone towards emulating the trademark look of CRT monitors. However, in that same spirit of ‘authentic’ reproduction it seems there’s great value in presenting the sounds of older hardware in a way which reflects the possibilities of the time.
You absolutely could just slap any old low pass filter on Ninja Gaiden and leave it at that, but personally I’d be very much interested in any steps taken towards the real thing.
Basically, I’m saying that the purest, crispest audio signal = muh pixel-perfect