High and Low pass filtering

[TelemachusMH]

When do you use the high and low pass filtering and how do you know what values to use?

Thanks,
TelemachusMH

[DJ Bobo]

I never use high pass filtering

If you're going to encode to ABR, enter only
--alt-preset xyz (where xyz your desired bitrate is)
and it will make all things automatically

For CBR encoding, I use the following lowpass values:
128kbps JS: 17KHz
160kbps Stereo: 18KHz
192kbps Stereo: 20KHz

[pacohaas]

Originally posted by bobotns
For CBR encoding, I use the following lowpass values:
128kbps JS: 17KHz
160kbps Stereo: 18KHz
192kbps Stereo: 20KHz I don't use CBR, but I'm just wondering, is there any reason you don't use the defaults for --alt-preset cbr xyz?

[DJ Bobo]

@ pacohaas
I never new that --alt-preset can also encode CBR, I'll give it a shot, may be it's better than my own recept.

[Gabriel_Bouvigne]

You could use lame --alt-preset xyz --cbr

[pacohaas]

as I said before:
--alt-preset cbr 192
is the correct syntax, check the following link for more info.

http://www.hydrogenaudio.org/forums/showthread.php?threadid=260