[sdiy] Low Pass filters and musically useful frequency range

[Pete Hartman]

TOTAL swag follows :)

I was watching a video on production techniques a couple weeks ago,
and the guy doing it recommended for bass setting up a HPF to keep the
lowest of the low end from muddying up the sound.  Not explicitly
said, but I was guessing "on audio playback that couldn't reproduce it
well".  He was using a moderate Q as well so there was a bit of a bump
for the low end in that.

Keep in mind, I'm merely repeating what he asserted; though his video
did seem to demonstrate a tighter bass sound by doing so, I have no
authority with which to agree or disagree :).

Could the reason be related to this concept at all?

Thanks

Pete


On Tue, May 6, 2014 at 2:11 PM, David Ingebretsen
<dingebre at 3dphysics.net> wrote:
> The basic question revolves around the output stage of the Moog 914 fixed
> filter bank and the fact it incorporates a highpass filter with a cutoff
> around 40-60 Hz depending on how you want to define the -3dB point.
>
> Questions:
> 1. As a general proposition and in a purely subjective context, what is the
> lowest frequency that is musically useful?  At some point most waveforms
> start to sound like clicks and pops. Subwoofers can pound your
> proprioceptive system and add a useful effect I suppose but "how low can you
> go" and still be musical?
>
> 2. Why would Moog add such a high pass filter to the 914? I can see blocking
> DC, but why worry about 10 Hz getting through? Does it have to do with being
> musically useful? I don't think this high pass filter was in the 907, so why
> add it to the 914?
>
> Thanks
>
> David
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy