RIAA phono eq curve

[suemac at empire.net]

For reference purposes:

The calculations for the curve:

http://www.tanker.se/lidstrom/riaa.htm

I suppose I'd consider the gain, dynamic range, etc. of the non-RIAA pre
you're going to use and possibly the effect of the input impedance
(cartridge to input) on SNR.

Of course, a lot depends on the condition of the vinyl you've got.

Decent inexpensive RIAA pre's are available.

I use a kit that I got from years agao from...I think PAiA.

Most audiophile gear from the 1970's, 1980's had pretty good phono pre's as
well.



Original Message:
-----------------
From: Sean Corbett seanbutnotheard at gmail.com
Date: Thu, 19 Mar 2009 08:56:36 -0400
To: ubuntu-studio-users at lists.ubuntu.com, phil at magnustudios.com
Subject: Re: RIAA phono eq curve


> ------------------------------
>
> Message: 3
> Date: Wed, 18 Mar 2009 12:31:54 -0400
> From: Phil <phil at magnustudios.com>
> Subject: RIAA phono eq curve
> To: Ubuntu Studio Users Help and Discussion
>        <ubuntu-studio-users at lists.ubuntu.com>
> Message-ID:
>        <d20263c0903180931y2903247di36f1d8379bff89ed at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hey,
>
> I've got a large collection of vinyl records I need to record onto CD, or
> some other digital format. I've got a stereo with phono inputs, so I could
> use that for the preamp, but I'd rather take the phono player directly
into
> my firebox and correct the EQ digitally.
>
> I've done a bit of research on what I need to do. I need a really accurate
> diagram of the RIAA phono curve. The best I've found so far is the one at
> wikipedia, http://en.wikipedia.org/wiki/File:RIAA-EQ-Curve.svg . It's only
> got the markings for 20, 1000, and 20000 Hz. I guess it's got to be a
> logarhythmic graph so I should be able to use it to acurately find the
other
> frequency levels.
>
> What I'm hoping for is that someone has already done this and has made a
> preset for a ladspa plugin, or for jamin. Does anyone know of this?
>
> If not, I'll make mine publicly available when I do it.
>
> Thanks,
>
> Phil
> phil at magnustudios.com

Audacity has the RIAA curve built in... Just record your vinyl, select
the whole recording, and go to Effect>Equalization... and select
'RIAA' from the 'Select Curve' dropdown at the bottom.  I've never
done this myself though, so I can't vouch for its accuracy.

-- 
Sean Corbett

 __BlacktownSoundLabs__
[http://blacktownsound.com]

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