replace in opening quotations

node125.html

@@ -72,8 +72,8 @@ Pitch shifter</A>
 Example G09.pitchshift.pd (Figure <A HREF="#fig07.33">7.33</A>) shows a realization of the pitch shifter
 described in Section <A HREF="node115.html#sect7.pitchshift">7.9</A>.  A delay line (defined and written
 elsewhere in the patch) is read using two <TT>vd~</TT> objects.  The delay
-times vary between a minimum delay (provided as the ``delay" control) and the
-minimum plus a window size (the ``window" control.)
+times vary between a minimum delay (provided as the "delay" control) and the
+minimum plus a window size (the "window" control.)
 
 <P>
 
@@ -112,7 +112,7 @@ t = {2 ^ {h/12}} = {e ^ {\log(2)/12 \cdot h}} \approx {e ^ {0.05776 h}}
 </DIV>
 <BR CLEAR="ALL">
 <P></P>
-(called ``speed change" in the patch).  The computation labeled ``tape
+(called "speed change" in the patch).  The computation labeled "tape
 head rotation speed" is the same as the formula for <IMG
  WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
  SRC="img112.png"