Subject: [linux-audio-user] Fwd: [Jamin] Re: soft clip: Achieving Gain, inconsequential overloads
From: R Parker (rtp405_AT_yahoo.com)
Date: Sun Apr 11 2004 - 23:16:38 EEST
Hi,
Maybe some folks on this list have insites into the
following conversation between Steve and myself. I
need all the help I can get. The last three paragraphs
are a topic for which I am woefully ignorant.
> --- Steve Harris <S.W.Harris_AT_ecs.soton.ac.uk> wrote:
> > On Sun, Apr 11, 2004 at 10:04:43 -0700, R Parker
> > wrote:
> > > Not sure but I probably mentioned something
> about
> > this
> > > several months ago. Steve, do you have a soft
> clip
> > > LADSPA plug? If yes, I think it should be a
> > candidate
> > > for adding to the output stage of JAMin.
> >
> > There are some soft clip LADSPA plugins, but I
> dont
> > think any of them are
> > better than JAMin's "boost".
> The thing is my client has requested a %20 increase
> in
> volume across the entire album. The first question
> is
> does he know what he's asking for. Well, he probably
> has a fair enough idea. He has compared the old
> master
> with stylistically similar million dollar masters
> and
> concluded the percentage to increase.
>
> If anyone here has tricks for achieving gain, I need
> to hear about them. My bag ain't got alot in it. I
> basically cut dominant frequency either with
> compression or equalization and with the leveled off
> floor, achieve gain possible; input, compressor
> makeup, limiter input, boost and output. Of course
> then it's just a matter of tweaking ratios,
> thresholds, etc.
>
> The trade off in general is less dynamics and more
> distortion with several deciables of increased
> volume.
> I love the work but this job is like a No Rules Cage
> Match. I might eventually win the title but it's a
> good thing I brought lunch and a first aid kit.
>
> > I've heard that you can ignore peaks that only go
> > over 0dB for less than a
> > millisecond, but I've not experimented with it.
>
> If that's the case, then I might have this job in
> the
> bag. I'm watching overloads at the input channels of
> my mixer flicker on and off. I've been trying very
> hard to have absolutely zero overload indications.
>
> Any idea how to test this potential point of
> flexibility or how to push this limit? What am I
> watching for and how do I watch for it? This seems
> like a very interesting area of study. I've gotta do
> a
> dirt knap and then maybe google about or something.
>
> ron
>
> > - Steve
>
>
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