>
> I would rather use a better encoder and Lame is heading to be the
> best. Could one of you kind programmers please consider a new switch
> (say -K or -k-) to permanently turn on the existing low-pass filter.
> As I said, Xing has this option, and for FM radio which doesn't need
> the higher frequencies, it would leave more bandwidth for better
> quality encoding.
>
> Greg tells me that using VBR with -V5 or higher setting turns on the
> filter but I would prefer to use -V4.
>
> Thanks for your consideration,
> Ross.
>
I added this to the todo list. I think it would be best to
have a --lowpass <freq> and --highpass <freq> options, and
remove the -k and sfb21 switches alltogether. The default
lowpass frequency would then depend on the bitrate and sampling
rate.
But in the mean time, it is easy to add this:
for example, in lame.c around line 724, if you hard code
lowpass1=.50
lowpass2=.65
it will start applying the filter at 22*lowpass1 kHz,
with all frequencies above 22*lowpass2 kHz removed.
(22 is assuming 44kHz sampling frequency.)
Mark
--
MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
