diff Simulation/runAnalysis_filteredNoise_simulation.m @ 0:ab043bd3b162 tip

First commit

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Simulation/runAnalysis_filteredNoise_simulation.m	Mon Jun 11 17:42:13 2012 +0100
@@ -0,0 +1,88 @@
+%Script to run delay estimation analysis of filtered white noise at various
+%bandwidths and with different window shapes
+
+
+% Developer:  - Alice Clifford ([e-mail])
+
+
+
+clear all
+close all
+
+addpath ../Functions
+
+Fs=44100;
+T=10;
+
+
+winShapes={
+    'blackman',
+    'blackmanharris',
+    'flattopwin',
+    'gausswin',
+    'hamming',
+    'hann',
+    'rectwin',
+    };
+
+
+ds=10; %simulated delay (samples)
+
+input=randn((T*Fs)+ds+1,1);
+input=input./max(abs(input)); %white noise input
+
+centreFreq=[0 11025 22050]; %centre frequencies (LP, BP, HP)
+
+bandWidth=logspace(1,5,500); %bandwidths
+
+bandWidth=(bandWidth(bandWidth>50));
+bandWidth=bandWidth(bandWidth<22050);
+bandWidth=round(bandWidth);
+
+
+percHits=zeros(length(bandWidth),length(centreFreq));
+
+filterOrder=4;
+freqVec=linspace(0,Fs,length(input));
+
+frameSize=2048;
+hopSize=frameSize/4;
+
+
+for w=1:length(winShapes)
+    
+    for n=1:length(centreFreq)
+        
+        for m=1:length(bandWidth)
+            
+            
+            [w n m]
+            %CREATE FILTERED NOISE VECTOR FROM CENTRE FREQ AND BANDWIDTH
+            filtNoise=createFiltNoise(input,centreFreq(n),bandWidth(m),filterOrder,Fs);
+            
+            %CREATE DELAYED SIGNAL
+            x=zeros(length(filtNoise),2);
+            
+            x(:,1)=filtNoise;
+            x(:,2)=filter([zeros(ds,1);1],1,filtNoise);
+            
+            x=x(ds+1:end,:);
+            
+            
+            delayVec=gccPHATFunc_win(x,frameSize,hopSize,winShapes{w});
+            percHitsMat(n,m)=percCorr(delayVec,ds,2);
+            
+            
+        end
+        
+        
+    end
+    clear x filtNoise
+    
+    %save(strcat('Results/noiseExpandBand_',winShapes{w})); %uncomment to
+    %save data
+    
+end
+
+toc
+