Rename AudioToneSweep to AudioSynthToneSweep

examples/ToneSweep/ToneSweep.ino

 #include <SPI.h>
 #include <Bounce.h>
 
-AudioToneSweep      myEffect;
+AudioSynthToneSweep myEffect;
 AudioOutputI2S      audioOutput;        // audio shield: headphones & line-out
 
 // The tone sweep goes to left and right channels
   Serial.println("setup done");
 
   if(!myEffect.begin(t_ampx,t_lox,t_hix,t_timex)) {
-    Serial.println("AudioToneSweep - begin failed");
+    Serial.println("AudioSynthToneSweep - begin failed");
     while(1);
   }
   // wait for the sweep to end
 
   // and now reverse the sweep
   if(!myEffect.begin(t_ampx,t_hix,t_lox,t_timex)) {
-    Serial.println("AudioToneSweep - begin failed");
+    Serial.println("AudioSynthToneSweep - begin failed");
     while(1);
   }
   // wait for the sweep to end

synth_tonesweep.cpp

 // Written by Pete (El Supremo) Feb 2014
 
 
-boolean AudioToneSweep::begin(short t_amp,int t_lo,int t_hi,float t_time)
+boolean AudioSynthToneSweep::begin(short t_amp,int t_lo,int t_hi,float t_time)
 {
   double tone_tmp;
   
 if(0) {
-  Serial.print("AudioToneSweep.begin(tone_amp = ");
+  Serial.print("AudioSynthToneSweep.begin(tone_amp = ");
   Serial.print(t_amp);
   Serial.print(", tone_lo = ");
   Serial.print(t_lo);
 
 
 
-unsigned char AudioToneSweep::busy(void)
+unsigned char AudioSynthToneSweep::busy(void)
 {
   return(sweep_busy);
 }
 
-int b_count = 0;
-void AudioToneSweep::update(void)
+static int b_count = 0; // TODO: what's this for?
+
+void AudioSynthToneSweep::update(void)
 {
   audio_block_t *block;
   short *bp;

synth_tonesweep.h

 //                A u d i o T o n e S w e e p
 // Written by Pete (El Supremo) Feb 2014
 
-class AudioToneSweep : public AudioStream
+class AudioSynthToneSweep : public AudioStream
 {
 public:
-  AudioToneSweep(void) : 
+  AudioSynthToneSweep(void) :
   AudioStream(0,NULL), sweep_busy(0)
   { }