> >
> Definitely have to be a command line switch - I've got a mate who's an
> audiophile so he wouldn't like the thought of cutting off at a frequency.
> It'd do for me tho'
>
Even for someone with perfect hearing, the real question is which
is more important: high frequencies or a better representation
of the dominant frequencies.
At 128kbs, with dist10 based encoders, there are a lot of artifacts
which I think are much more noticeable then the lack of frequencies
above 16khz.
This is probably why the FHG encoder has the following (bit rate
dependant) freq. cutoffs:
sample
bps rate Upper Freq.
MP3 256 44.1 20.05 kHz
MP3 192 44.1 19 kHz
MP3 128 44.1 14.25 kHz
AAC 128 44.1 17.5 kHz
(data from http://www.firstpr.com.au/audiocomp/aac-mp3-vq.html
- very informative site)
Mark
