Removing more unused functions

    methods(Static=true)

        function mat = convert_numpy_2darray(np_array)

            py_list = np_array.tolist();

            % List to cell

            matCell = cell(py_list)';

            shape = cell(np_array.shape);

            shape_mat = zeros(1, length(shape));

            for i=1:length(shape)

                shape_mat(i) = double(shape{i});

            end

            mat = zeros(shape_mat);

            for i = 1:length(matCell)

                if isa(matCell{i}, 'py.list')

                    mat(i,:) = cell2mat(cell(matCell{i}));

                end

            end

        end

        function mat = convert_numpy_3darray(np_array)

            py_list = np_array.tolist();

            % List to cell

            matCell = cell(py_list)';

            shape = cell(np_array.shape);

            shape_mat = zeros(1, length(shape));

            for i=1:length(shape)

                shape_mat(i) = double(shape{i});

            end

            mat = zeros(shape_mat);

            for i = 1:length(matCell)

                if isa(matCell{i}, 'py.list')

                    for j = 1:length(matCell{i})

                        if isa(matCell{i}, 'py.list')

                            mat(i,j,:) = cell2mat(cell(matCell{i}{j}));

                        end

                    end

                end

            end

        end

        function [Band2FR,FCs]=MakeBand2FR(FFTLen,FSample)

            % Compute the standard band filters for freq domain representations

            %