diff util/classes/@audio/buffer.m @ 166:1495bdfa13e9 danieleb

Updated grassmanian function (restored old computation of the dictionary) and added functions to the audio class

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/classes/@audio/buffer.m	Mon Sep 19 14:53:23 2011 +0100
@@ -0,0 +1,27 @@
+function obj = buffer(obj,wLength,overlap,window,method)
+
+%% Check inputs & Defaults
+error(nargchk(2, 5, nargin, 'struct'));
+
+if ~exist('overlap','var') || isempty(overlap), overlap = 0; end
+if ~exist('method','var') || isempty(method), method = 'standard'; end
+
+%% Buffer audio
+switch lower(method)
+	case 'standard'
+		if ~exist('window','var') || isempty(window), window = @rectwin; end
+		validWindows = {'hanning','hamming','triang','rectwin'};
+		if ~sum(strcmpi(validWindows,func2str(window)));
+			error('The window chosen is not valid because it cannot be inverted!');
+		end
+		obj.S = diag(window(wLength))*buffer(obj.s,wLength,overlap,'nodelay');
+	case 'lot'
+		if ~exist('window','var') || isempty(window), window = 'sin2'; end
+		s_lot = lot(obj.s,wLength,'id',overlap,window);
+		obj.S = buffer(s_lot,wLength);
+	otherwise
+		error('Please specify a valid buffer method');
+end
+
+obj.bufferOperator = struct('wLength',wLength,'overlap',...
+	overlap,'window',window,'method',method);