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Old 24th February 2006, 08:59 AM   #31
EC8010 is offline EC8010  United Kingdom
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If you fancy doing the complex algebra as a mental exercise, then feel free. I calculated the response of an inverse RIAA network from first principles and had to align my paper to landscape, and I only did it because it was absolutely necessary. Why trudge through repeating Lipshitz? The reason it was publishable was that it represented a great deal of work.

PS We hope that school principals have principles.
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Old 24th February 2006, 09:08 PM   #32
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Off topic of RIAA networks.

The algebra is very simple if you use a symbolic algebra program such as DERIVE. It is available for a 30 day free trial at http://www.derive-europe.com/main.asp .

I have a DOS version of the program from the early 1990s that came on a single 3.5" diskett. It did an amazing amount of algebra and calculus. I used the program recently to calculate some derivatives and it ran perfectly fine in a DOS window on a 1gHz Pentium. The answer would pop up as soon as you hit enter. No need for pencil and paper.
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Old 25th February 2006, 08:02 AM   #33
Electrons are yellow and more is better!
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You may check my Excel files. It might help you.
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File Type: zip riaa_curve_optimal.xls.zip (65.0 KB, 456 views)
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Old 25th February 2006, 08:03 AM   #34
Electrons are yellow and more is better!
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One more...
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Old 25th February 2006, 08:08 AM   #35
Electrons are yellow and more is better!
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...more....
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Old 21st March 2008, 05:39 PM   #36
ihan is offline ihan  England
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Thanks for the very useful spreadsheet peranders. Using it, I can confirm that the correct value for the self circuit is 62k.
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Old 25th March 2008, 12:50 AM   #37
mlloyd1 is offline mlloyd1  United States
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the forum's own andy c has a nice riaa eq writeup here:
http://www.diyaudio.com/forums/showt...022#post661022

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