diff util/classes/@audio/audio.m @ 160:e3035d45d014 danieleb

Added support classes

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/classes/@audio/audio.m	Wed Aug 31 10:53:10 2011 +0100
@@ -0,0 +1,54 @@
+classdef audio
+    %% Audio object
+    properties
+        s  %vector containing the audio signal
+        fs %sampling frequency 
+        nBits % number of bits per sample
+        name % string containing the name of the audio file
+        format % string containing the format of the audio file
+    end
+    
+    methods
+        %% Constructor
+        function obj = audio(varargin)
+            error(nargchk(1,5,nargin));
+            if ischar(varargin{1})
+                [~, obj.name obj.format] = fileparts(varargin{1});
+                switch obj.format
+                    case '.wav'
+                        [obj.s obj.fs obj.nBits] = wavread(varargin{1});
+                    otherwise
+                        error('Unsupported audio format')
+                end
+            else
+                obj.s = varargin{1};
+                if nargin>1, obj.fs = varargin{2}; else obj.fs = []; end
+                if nargin>2, obj.nBits = varargin{3}; else obj.nBits = []; end
+                if nargin>3, obj.name = varargin{4}; else obj.name = []; end
+                if nargin>4, obj.format = varargin{5}; else obj.format = []; end
+            end
+        end
+        
+        %% Playback functions
+        function player = play(obj, player)
+            if ~exist('player','var') || isempty(player)
+                player = audioplayer(obj.s,obj.fs);
+            end
+            play(player);
+        end
+        
+        function player = stop(obj, player)
+            if ~exist('player','var') || isempty(player)
+                player = audioplayer(obj.s,obj.fs);
+            end
+            stop(player)
+        end
+        
+        function player = pause(obj, player)
+            if ~exist('player','var') || isempty(player)
+                player = audioplayer(obj.s,obj.fs);
+            end
+            pause(player)
+        end
+    end
+end