diff utilities/temp.m @ 38:c2204b18f4a2 tip

End nov big change

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utilities/temp.m	Mon Nov 28 13:34:28 2011 +0000
@@ -0,0 +1,39 @@
+frequencies=[1000 1250];
+amplitudesdB=[20 23];
+nFrequencies=length(frequencies);
+
+dt=0.0001;
+
+toneDuration=.010;
+time=dt:dt:toneDuration;
+
+% fixed ramp, silenceDuration, toneDuration
+rampDuration=0.005;
+rampTime=dt:dt:rampDuration;
+ramp=[0.5*(1+cos(2*pi*rampTime/(2*rampDuration)+pi)) ...
+    ones(1,length(time)-length(rampTime))];
+ramp=ramp.*fliplr(ramp);
+
+silenceDuration=0.010;
+silenceDurationLength=round(silenceDuration/dt);
+initialSilence=zeros(1,silenceDurationLength);
+
+silenceToneDuration=toneDuration + silenceDuration;
+silenceToneDurationLength=round(silenceToneDuration/dt);
+
+totalDuration=silenceToneDuration*nFrequencies;
+totalDurationLength=round(totalDuration/dt);
+stimulus=zeros(1,totalDurationLength);
+toneBeginPTR=1;
+
+for i=1:nFrequencies
+    frequency=frequencies(i);
+    dBSPL=amplitudesdB(i);
+    amplitude=28e-6* 10.^(dBSPL/20);
+    tone=amplitude*sin(2*pi*frequency*time);
+    tone=tone.*ramp;
+    stimulus(toneBeginPTR:toneBeginPTR+silenceToneDurationLength-1)=...
+        [initialSilence tone];    
+    toneBeginPTR=toneBeginPTR+silenceToneDurationLength;
+end
+figure(2), plot( stimulus')