Re: Do I need to fix the non-matching analog connection in A/D process?

Greg Berchin wrote:
On Sat, 07 Jun 2008 15:50:50 -0400, Jerry Avins <jya@xxxxxxxx> wrote:

Yes, but why not do it the easy way, by loading the cartridge
properly?
Are you sure about that yes? The R-L filter's phase is included in the RIAA spec. BTW: why not the standard 47K?

He's already abandoned the phase issue by using Robert Orban's RIAA
equivalent filters, which match magnitude but not phase. See
http://groups.google.com/group/comp.dsp/browse_thread/thread/59232b93211c041a

That is not a good idea if he's a critical listener.

The cartridge wants to see a 47K resistive load. The sound card
provides 1M. 1M || 49.3K = 47K, 49.9K is the nearest 1% standard
value.

Got it. I'm not used to thinking in terms of 1%. (The cartridges impedances certainly aren't that accurate.)

Jerry
--
Engineering is the art of making what you want from things you can get.
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