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[Grapevine-cvs-commits] cvs: website / designnotes.php
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From: blackh <gra...@li...> - 2003-07-23 03:10:05
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blackh Tue Jul 22 20:10:03 2003 EDT
Modified files:
/website designnotes.php
Log:
Index: website/designnotes.php
diff -u website/designnotes.php:1.17 website/designnotes.php:1.18
--- website/designnotes.php:1.17 Sat Mar 15 03:43:21 2003
+++ website/designnotes.php Tue Jul 22 20:10:02 2003
@@ -1,6 +1,6 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<!-- $Id: designnotes.php,v 1.17 2003/03/15 11:43:21 blackh Exp $ -->
+<!-- $Id: designnotes.php,v 1.18 2003/07/23 03:10:02 blackh Exp $ -->
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
@@ -326,6 +326,19 @@
End of pgp message
+
+Subject: FFT Prediction #1
+Date: Sun Jul 20 09:36:04 2003
+From: "Martin Katz, Ph.D."
+To: st...@bl...
+
+What you are describing is called autocorrelation. You don't have to
+worry about phase.
+
+The algorithm is unFFT( FFT^2 ). That is, square the FFT and then
+convert back to time domain.
+
+Dr. Bits.
</pre>
<hr/>
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