[78-L] Fake stereo

[Milan Milovanovic]

Michael,


are there consequences regarding eq while doing it (digitally) on flat 78rpm 
monaural transfers? What really we can expect in that matter? Cancellation 
of some frequencies? Other irregularities?

Thank you,

Milan


----- Original Message ----- 
From: "Michael Biel" <mbiel at mbiel.com>
To: "78-L Mail List" <78-l at klickitat.78online.com>
Sent: Friday, March 01, 2013 9:16 PM
Subject: Re: [78-L] Fake stereo


> Let me explain something about echo/reverb vs. tone controls and comb
> filtering.  There is a slight amount of phase shifting whenever tone
> controls are used.  ANY tone control.  In electronic terms this phase
> shift is a slight delay measured in microseconds.  (This includes
> inherent equalization like RIAA, and is why RIAA playback
> re-equalization must be done in the analog domain, NOT in the digital
> domain.  We had a tutorial about this at ARSC a couple of years ago.
> You cannot feed a flat LP audio into your computer and expect any but
> the very expensive programs to put in the RIAA equalization.)  It is
> also why the Vinylphools do not have variable tone controls in their
> systems.  Changing the tone can affect the "soundstage" of 2 or 3-mic
> stereo like Mercury Living Presence, Decca/London blue-backs, or RCA
> Living Stereo which depends on phase relationships.  Overdub or
> multitrack stereo are not affected as much, but these guys hate that
> stuff anyway.
>
>