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Nearest-neighbour search for BRIR direction #126

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Nearest-neighbour search for BRIR direction #126

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2bdbb0a
correct nearest neighbour search for BRIR direction
Jan 5, 2017
8f43081
prevent warning due to numerical inaccuracies
Jan 5, 2017
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12 changes: 8 additions & 4 deletions SFS_ir/get_ir.m
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Original file line number Diff line number Diff line change
Expand Up @@ -166,17 +166,21 @@
end
% Find nearest head orientation in the horizontal plane
[phi,theta] = sofa_get_head_orientations(header);
[neighbours_head,idx_head] = ...
findnearestneighbour([phi theta]',head_orientation,3);
[x(:,1),x(:,2),x(:,3)] = sph2cart(phi,theta,ones(length(phi),1));
[x_desired(1),x_desired(2),x_desired(3)] = ...
sph2cart(head_orientation(1),head_orientation(2),1);
[neighbours,idx_head] = findnearestneighbour(x',x_desired',3);
[neighbours_head(1,:),neighbours_head(2,:)] = ...
cart2sph(neighbours(1,:),neighbours(2,:),neighbours(3,:));
% Check if head orientation is out of bounds
if all(abs(head_orientation(1))>abs(neighbours_head(1,:)))
if all(abs(head_orientation(1))-abs(neighbours_head(1,:))>0.001)
warning('SFS:get_ir',['Head azimuth %.1f deg out of bound, ', ...
'using %.1f deg instead.'], ...
deg(head_orientation(1)), ...
deg(neighbours_head(1,1)));
head_orientation(1) = neighbours_head(1,1);
end
if all(abs(head_orientation(2))>abs(neighbours_head(2,:)))
if all(abs(head_orientation(2))-abs(neighbours_head(2,:))>0.001)
warning('SFS:get_ir',['Head elevation %.1f deg out of bound, ', ...
'using %.1f deg instead.'], ...
deg(head_orientation(2)), ...
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