[Scipy-svn] r2918 - trunk/Lib/signal

scipy-svn@scip... scipy-svn@scip...
Fri Apr 13 16:46:08 CDT 2007


Author: oliphant
Date: 2007-04-13 16:46:05 -0500 (Fri, 13 Apr 2007)
New Revision: 2918

Modified:
   trunk/Lib/signal/signaltools.py
Log:
Fix doc error in lfilter.

Modified: trunk/Lib/signal/signaltools.py
===================================================================
--- trunk/Lib/signal/signaltools.py	2007-04-13 19:40:35 UTC (rev 2917)
+++ trunk/Lib/signal/signaltools.py	2007-04-13 21:46:05 UTC (rev 2918)
@@ -464,8 +464,8 @@
     The filter function is implemented as a direct II transposed structure.
     This means that the filter implements
 
-    y[n] = b[0]*x[n] + b[1]*x[n-1] + ... + b[nb]*x[n-nb]
-                     - a[1]*y[n-1] + ... + a[na]*y[n-na]
+    a[0]*y[n] = b[0]*x[n] + b[1]*x[n-1] + ... + b[nb]*x[n-nb]
+                          - a[1]*y[n-1] - ... - a[na]*y[n-na]
 
     using the following difference equations:
 



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