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function bspectrum=getBspectrum(ps,threshold,bandfirst,bandlast)
% function bspectrum=getBspectrum(ps,threshold,bandfirst,bandlast)
% compute binary spectrum using threshold spectrum as pivot
% bspectrum = binary spectrum (binary)
% ps=current power spectrum (float)
% threshold=threshold spectrum (float)
% bandfirst = first band considered
% bandlast = last band considered
% initialization stuff
if( length(ps)<bandlast | bandlast>32 | length(ps)~=length(threshold))
error('BinDelayEst:spectrum:invalid','Dimensionality error');
end
% get current binary spectrum
diff = ps - threshold;
bspectrum=uint32(0);
for(i=bandfirst:bandlast)
if( diff(i)>0 )
bspectrum = bitset(bspectrum,i);
end
end
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