Re: [LAU] [Sort of OT] Ringing in filters

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To: <linux-audio-user@...>
Date: Tuesday, May 18, 2010 - 8:55 pm

On Mon, May 17, 2010 at 02:29:01AM -0700, Ken Restivo wrote:

> Well, Fons kind of sniffed at Jamin-- "you are mastering through a vocoder"

Well, that is not really what I wrote:

Responding to:

>> I was thinking about tearing into the code for

I wrote:

> Jamin's FFT based filter is not really a filter, it's a vocoder

Which is just true. It's also true that changing the window
function and increasing the FFT overlap has reduced the
artefacts to below -80..-90 dB w.r.t. the signal. But that's
not a solution but a cover-up, coming at the expense of a lot
of wasted CPU load - Jamin takes 35% on my 2GHz P4. For what
it is doing 5% would be reasonable. And it doesn't help to
bypass the EQ: it is *always* in circuit, even if the response
is forced to flat when you enable the 'bypass' checkbox. Nor
does it help to improve the atrocious type of responses that
the 'HD' filter will generate if you are just a bit unlucky.

Ciao,

--
FA

O tu, che porte, correndo si ?
E guerra e morte !
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Messages in current thread:
[LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Tue May 11, 9:43 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Tue May 11, 10:11 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Tue May 11, 10:36 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Erik de Castro Lopo, (Tue May 11, 11:35 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Tue May 11, 11:19 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Wed May 12, 1:16 am)
Re: [LAU] [Sort of OT] Ringing in filters, Erik de Castro Lopo, (Wed May 12, 4:55 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Wed May 12, 12:41 am)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Wed May 12, 9:11 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Wed May 12, 6:32 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Wed May 12, 7:44 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Thu May 13, 9:01 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Thu May 13, 8:44 am)
Re: [LAU] [Sort of OT] Ringing in filters, Joel Roth, (Wed May 12, 8:16 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Thu May 13, 8:00 am)
Re: [LAU] [Sort of OT] Ringing in filters, Joel Roth, (Mon May 17, 9:14 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Mon May 17, 9:31 am)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Tue May 18, 8:55 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Folderol, (Tue May 18, 9:03 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Patrick Shirkey, (Mon May 17, 9:52 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Wed May 12, 8:04 pm)
Re: [LAU] [Sort of OT] Ringing in filters, J├Ârn Nettingsmeier, (Mon May 17, 9:55 am)
Re: [LAU] [Sort of OT] Ringing in filters, Garry Ogle, (Mon May 17, 8:13 am)
Re: [LAU] [Sort of OT] Ringing in filters, Erik de Castro Lopo, (Tue May 11, 11:46 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Wed May 12, 8:52 am)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Wed May 12, 1:00 am)
Re: [LAU] [Sort of OT] Ringing in filters, Chris Cannam, (Wed May 12, 9:09 am)
Re: [LAU] [Sort of OT] Ringing in filters, Chris Cannam, (Thu May 13, 7:47 am)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Wed May 12, 3:05 pm)