Re: [linux-audio-user] Fwd: [Jamin] Re: soft clip: Achieving Gain, inconsequential overloads

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Subject: Re: [linux-audio-user] Fwd: [Jamin] Re: soft clip: Achieving Gain, inconsequential overloads
From: Dan Harper (tech_AT_danharper.org)
Date: Mon May 03 2004 - 06:07:27 EEST


I just stumbled across a great article on the "louder is better" theme.

It uses a great example, with analysis and comparisons.

http://www.prorec.com/prorec/articles.nsf/articles/8A133F52D0FD71AB86256C2E005DAF1C

It may be helpful to include some of this in the Jamin docs also.

Dan

On Mon, 2004-04-12 at 06:16, R Parker wrote:
> 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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