diff mirex2012-matlab/doMultiF0.m @ 2:8017dd4a650d

Add MIREX 2012 code

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mirex2012-matlab/doMultiF0.m	Wed Mar 19 09:09:23 2014 +0000
@@ -0,0 +1,57 @@
+function  []  = doMultiF0(inputFile,outputFile)
+
+
+% Transcribe file
+fprintf('%s',['Preprocessing............']);
+[ph pz sumY] = transcriptionMultipleTemplates(inputFile,12,1.1,1.3);
+fprintf('\n');
+fprintf('%s',['Postprocessing...........']);
+pianoRoll = repmat(sumY,88,1).*pz(1:88,:);
+pianoRoll = pianoRoll';
+for j=[1:15 74:88] pianoRoll(:,j)=0; end;
+pianoRoll = medfilt1(pianoRoll,3);
+
+
+% Max polyphony 5
+[B,IX] =sort(pianoRoll,2,'descend');  
+tempPianoRoll = zeros(size(pianoRoll,1),88);
+for j=1:size(pianoRoll,1) for k=1:5 tempPianoRoll(j,IX(j,k)) = B(j,k); end; end;
+pianoRoll = tempPianoRoll;
+
+
+% Expand piano-roll and perform thresholding
+expandedPianoRoll = zeros(4*size(pianoRoll,1),88);
+for j=1:4*size(pianoRoll,1)
+    expandedPianoRoll(j,:) = pianoRoll(floor((j-1)/4)+1,:);    
+end;
+finalPianoRoll = (expandedPianoRoll>4.8)';
+
+
+% Create output and perform minimum duration pruning
+auxPianoRoll = diff([zeros(1,88); finalPianoRoll'; zeros(1,88);],1); k=0;
+for i=1:88
+    onsets = find(auxPianoRoll(:,i)==1);
+    offsets = find(auxPianoRoll(:,i)==-1);
+    for j=1:length(onsets)           
+        if((offsets(j)/100-0.01) - (onsets(j)/100) > 0.05)
+            k=k+1;
+            nmat(k,1) = onsets(j)/100;       
+            nmat(k,2) = offsets(j)/100-0.01;    
+            nmat(k,3) = 27.5*2.^((( i-1)*10 )/120);
+        end;
+    end;
+end;
+nmat = sortrows(nmat,1);
+
+
+% Print output
+fid=fopen(outputFile,'w');
+for i=1:size(nmat,1)
+    fprintf(fid,'%.2f\t%.2f\t%.2f\n',nmat(i,1),nmat(i,2),nmat(i,3));
+end;
+fclose(fid);
+fprintf('%s','done');
+fprintf('\n');
+
+
+exit;