Re: [linux-audio-user] Filtering out sounds?

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To: A list for linux audio users <linux-audio-user@...>
Date: Friday, March 9, 2007 - 7:58 pm

2007/3/9, Eric Dantan Rzewnicki :

What they do is add the inverted right channel onto the left and vice-versa...

Sounds simple, is simple, removes the bass and doesn't work on all titles.

A friend of mine programmed a version combined with high- and lowpass
to let the bass-part go through the effect and only karaoke-filter on
the higher frequencies. He also made the levels of the inverted
signals adjustable. That way you can select the panorama position to
remove. As a result you could filter either Eric Clapton or BB King on
"Riding with the king" and it sounded rather good.

But beware if you put these signals on a PA (for public karaoke): The
new left and right channels need to be panned. The more the better.
You will here nothing if both channels are panned center. (Because
both channels contain the other one inverted and the result will be
two normal and two inverted channels canceling each other = zero audio
levels...)

Have a nice weekend,

Arnold
--
visit http://www.arnoldarts.de/
---
Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich
verhindern könnte, würde ich mir noch heute einen Stapel Brenner und
einen Sack Rohlinge kaufen.

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Messages in current thread:
[linux-audio-user] apps.linuxaudio.org test updated, Thorsten Wilms, (Wed Mar 7, 8:55 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Thorsten Wilms, (Fri Mar 9, 1:09 pm)
[linux-audio-user] apps.linuxaudio.org test updated again, Thorsten Wilms, (Mon Mar 19, 7:01 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Thorsten Wilms, (Fri Mar 9, 9:51 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Robin Gareus, (Fri Mar 9, 10:39 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Thorsten Wilms, (Sat Mar 10, 8:33 am)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Robin Gareus, (Sat Mar 10, 4:19 pm)
RE: [linux-audio-user] apps.linuxaudio.org test updated, Ivica Ico Bukvic, (Fri Mar 9, 2:12 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Marc-Olivier Barre, (Fri Mar 9, 6:49 pm)
Re: [linux-audio-user] Filtering out sounds?, Robin Gareus, (Fri Mar 9, 8:00 pm)
Re: [linux-audio-user] Filtering out sounds?, Chuckk Hubbard, (Sat Mar 10, 2:41 am)
Re: [linux-audio-user] Filtering out sounds?, Robin Gareus, (Fri Mar 9, 10:09 pm)
Re: [linux-audio-user] Filtering out sounds?, Robin Gareus, (Sat Mar 10, 12:16 am)
Re: [linux-audio-user] Filtering out sounds?, carmen, (Fri Mar 9, 10:13 pm)
Re: [linux-audio-user] Filtering out sounds?, Robin Gareus, (Fri Mar 9, 10:22 pm)
Re: [linux-audio-user] Filtering out sounds?, carmen, (Fri Mar 9, 10:16 pm)
[linux-audio-user] GG-DV2000 Port?, sevol, (Fri Mar 9, 7:36 pm)
Re: [linux-audio-user] GG-DV2000 Port?, Ken Restivo, (Sat Mar 10, 10:15 am)
Re: [linux-audio-user] GG-DV2000 Port?, sevol, (Sun Mar 11, 11:47 pm)
Re: [linux-audio-user] GG-DV2000 Port?, Dave Phillips, (Fri Mar 9, 10:23 pm)
Re: [linux-audio-user] GG-DV2000 Port?, sevol, (Sun Mar 11, 10:54 pm)
Re: [linux-audio-user] Filtering out sounds?, Lee Revell, (Fri Mar 9, 7:25 pm)
Re: [linux-audio-user] Filtering out sounds?, Eric Dantan Rzewnicki, (Fri Mar 9, 7:50 pm)
Re: [linux-audio-user] Filtering out sounds?, Vince Werber, (Fri Mar 9, 8:08 pm)
Re: [linux-audio-user] Filtering out sounds?, Vince Werber, (Sat Mar 10, 3:08 am)
Re: [linux-audio-user] Filtering out sounds?, Arnold Krille, (Fri Mar 9, 7:58 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Chris Cannam, (Thu Mar 8, 10:16 am)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Thorsten Wilms, (Thu Mar 8, 8:02 pm)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Thorsten Wilms, (Fri Mar 9, 8:44 am)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Patrick Shirkey, (Fri Mar 9, 4:32 am)
Re: [linux-audio-user] apps.linuxaudio.org test updated, Tracey Hytry, (Wed Mar 7, 10:09 pm)