Re: [ARSCLIST] Non-RIAA preamp

[Rob Poretti <r.poretti@xxxxxxxxxx>]

Well it depends on the approach that the digital eq takes for processing...

Digital EQ designers will choose IIR or FIR based on design criteria of the
EQ.  FIR is chosen for phase-linear equalizers.  So... if you're concerned
about this, look for a FIR based tool and you won't have to worry about it.

Cheers!

Rob

> -----Original Message-----
> From: Association for Recorded Sound Discussion List 
> [mailto:ARSCLIST@xxxxxxx] On Behalf Of Jeff Brown
> Sent: September 8, 2006 11:07 AM
> To: ARSCLIST@xxxxxxxxxxxx
> Subject: Re: [ARSCLIST] Non-RIAA preamp
> 
> 
> There was a lot of support expressed in this thread for 
> making flat transfers, then declicking, then applying EQ in software.
> 
> But no one addressed the issue of the phase shift correction 
> needed to 
> compensate
> for the phase shift introduced by the original recording EQ.  
> With an analog phono preamp the required playback phase 
> correction is inherently applied, but I've seen no assurances 
> that the digital EQ in the most commonly used software also 
> applies the needed phase compensation.
> 
> Comments, anyone?
> 
>