Re: [SoX-users] looking for a really tight (48db) lowpass filter with minimal effect on the remaining stuff

[Jerry <lan...@qw...>]

On Jan 21, 2013, at 2:42 PM, Fmiser wrote:

>> Benjamin Wild wrote:
> 
>> another wish of mine is to have a really tight (48db) lowpass
>> filter with minimal effect on the remaining stuff.
> 
> So would at least 10,000 other people - including me. :)
> 
>> it would be really nice to have a filter to remove those
>> things without touching the rest..
> 
> Gentle filters sound better.  Abrupt filters keep the junk out.
> _You_ have to decide what is an appropriate compromise for your
> content and your ears.  Sorry.
> 
> The SoX command "lowpass" is a 3 or 6 dB/octave, so that
> probably isn't abrupt enough for you.

Surely you don't mean 3 db/octave.
Jerry
> 
> The command "filter" can be used.  It also supports "plot" if
> you wish to see a graph.  The man page give details on how to
> use it.
> 
> --   Philip