Reverting negative sign in TF, must be positive!

applications/SoundFieldSimulation/Diffraction/ita_diffraction_maekawa.m

@@ -37,7 +37,7 @@ in_shadow_zone = ita_diffraction_shadow_zone( wedge, source_pos, receiver_pos );
 H_dir = 1 ./ r_dir;
 if in_shadow_zone
     % From Handbook of Acoustics page 117 eq. 4.13 + inverted phase (pressure release first)
-    H_diffr = ( -1 ) * ( ( 10^(5/20) * sqrt( 2 * pi * N ) ./ tanh( sqrt( 2 * pi * N ) ) ).^(-1) .* H_dir );
+    H_diffr = ( +1 ) * ( ( 10^(5/20) * sqrt( 2 * pi * N ) ./ tanh( sqrt( 2 * pi * N ) ) ).^(-1) .* H_dir );
 else
     H_diffr = zeros( size(frequencies) ); % diffraction field outside the shadow zone is not considered with Maekawa's method
 end

applications/SoundFieldSimulation/PropagationModels/ita_propagation_store_paths.m

+function ita_propagation_store_paths( pps_struct, json_file_path, auto_overwrite )
+%
+% ita_store_propagation_paths Exports propagation path list
+% from a Matlab struct into a JSON formatted text file
+%
+%
+    if ~isfield( pps_struct, 'class' )
+        error( 'Could not export propagation path list, struct is missing field "class"' )
+    end
+    
+    assert( strcmpi( pps_struct.class, 'propagation_path_list' ) )
+
+    if nargin < 3
+        auto_overwrite = true;
+    end
+    
+    json_txt = jsonencode( pps_struct );
+    
+    if exist( json_file_path, 'file' ) && ~auto_overwrite
+        error( 'Refused to overwrite file %s', json_file_path )
+    end
+    
+    fid = fopen( json_file_path, 'w' );
+    fprintf( fid, '%s\n', json_txt );
+    fclose( fid );
+    
+end