At 12:53 PM 2008-08-26, Eric Jacobs wrote:
>Weren't all those math formulas and standards the basis of the
>RCA test record?
One of the two EQ implementations I looked into in depth was AME and
using modern components I had to shift the values slightly to create
a real-world graph like the one in Jay McKnight's paper on the
subject. It was an interesting tradeoff between matching Jay's graph,
the SPICE graphs from two implementations and real-world components.
The other EQ implementation that I looked into in depth was cassette
equalization, and it, too, is very imprecise and left that way.
I think it's safe to say that the real world does not follow precise
mathematical curves in many areas.
Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
Detailed contact information: http://www.richardhess.com/tape/contact.htm
Quality tape transfers -- even from hard-to-play tapes.