PV_Diffuser helpfile improved

(cherry picked from commit 77256ef)

Signed-off-by: Dan Stowell <danstowell@users.sourceforge.net>

HelpSource/Classes/PV_Diffuser.schelp

@@ -5,8 +5,7 @@ categories:: UGens>FFT
 
 Description::
 
-Adds a different constant random phase shift to each bin. The trigger
-will select a new set of random phases.
+Adds a different constant random phase shift to each bin. When triggered, it selects a new set of random phases.
 
 
 classmethods::
@@ -27,33 +26,31 @@ Examples::
 
 code::
 
-s.boot;
-(
-b = Buffer.alloc(s,2048,1);
-c = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
-)
+
 
 (
-//trig with MouseY
-SynthDef("help-diffuser", { arg out=0, bufnum=0 ;
+// trig with MouseY crossing center of screen
+{
 	var in, chain;
-	in = Mix.ar(SinOsc.ar(200 * (1..10), 0, Array.fill(10, {rrand(0.1, 0.2)}) ));
-	chain = FFT(bufnum, in);
+	in = Mix.ar(SinOsc.ar(200 * (1..10), 0, Array.fill(10, { rrand(0.1, 0.2) }) ));
+	chain = FFT(LocalBuf(2048), in);
 	chain = PV_Diffuser(chain, MouseY.kr > 0.5 );
-	Out.ar(out, 0.5 * IFFT(chain).dup);
-}).play(s,[\out, 0, \bufnum, b.bufnum ]);
-)
+	0.5 * IFFT(chain).dup;
+}.play
+);
 
 (
-//trig with MouseY
-SynthDef("help-diffuser2", { arg out=0, bufnum=0, soundBufnum=2;
+b = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
+
+// trig with MouseY crossing center of screen
+{
 	var in, chain;
-	in = PlayBuf.ar(1, soundBufnum, BufRateScale.kr(soundBufnum), loop: 1);
-	chain = FFT(bufnum, in);
+	in = PlayBuf.ar(1, b, BufRateScale.kr(b), loop: 1);
+	chain = FFT(LocalBuf(2048), in);
 	chain = PV_Diffuser(chain, MouseY.kr > 0.5 );
-	Out.ar(out, 0.5 * IFFT(chain).dup);
-}).play(s,[\out, 0, \bufnum, b.bufnum, \soundBufnum, c.bufnum]);
-)
+	0.5 * IFFT(chain).dup;
+}.play
+);
 
 ::