Re: [ARSCLIST] 78rpm EQ and postprocessing

[Eric Jacobs <ericj@xxxxxxxxxxxxxxxxxxx>]

The keys are: (1) how many bands are needed to reproduce the EQ 
properly; (2) what sort of digital artifacts are produced by all
those filters in the cascading digital EQ.  A 20-band equalizer
will have a lot of digital filtering going on.

But for all but the most critical work, the equalizer in 
most audio editing software will work just fine.

I had to build a pretty sophisticated spreadsheet in order to
accurately reproduce the curves.  You basicially have to model
the EQ RC network to get it right.

Eric Jacobs

The Audio Archive
tel: 408.221.2128
fax: 508.549.9867
mailto:EricJ@xxxxxxxxxxxxxxxxxxx



-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:ARSCLIST@xxxxxxx]On Behalf Of Mike Richter
Sent: Saturday, November 19, 2005 12:51 PM
To: ARSCLIST@xxxxxxxxxxxx
Subject: Re: [ARSCLIST] 78rpm EQ and postprocessing


John Ross wrote:

> This raises another question: Is there any kind of software Out There 
> that can convert a sound file created through an RIAA-equalized preamp 
> to the correct equalizations for various types of 78s?
> 
> Seems like this would offer a useful and cost-effective alternative to 
> using a preamp with options for 78s like the modern Elberg or KAB, or 
> vintage Scott or McIntosh gear.
> 
> John Ross
> 
Any audio editor with an equalizer will do it for you. I use Adobe 
Audition which provides enough bands for my needs and allows labelling 
and saving the desired curve for ease of reuse.

Mike
-- 
mrichter@xxxxxxx
http://www.mrichter.com/