daniele@160: classdef audio
daniele@160:     %% Audio object
daniele@160:     properties
daniele@160:         s  %vector containing the audio signal
daniele@160:         fs %sampling frequency 
daniele@160:         nBits % number of bits per sample
daniele@160:         name % string containing the name of the audio file
daniele@160:         format % string containing the format of the audio file
daniele@160:     end
daniele@160:     
daniele@160:     methods
daniele@160:         %% Constructor
daniele@160:         function obj = audio(varargin)
daniele@160:             error(nargchk(1,5,nargin));
daniele@160:             if ischar(varargin{1})
daniele@160:                 [~, obj.name obj.format] = fileparts(varargin{1});
daniele@160:                 switch obj.format
daniele@160:                     case '.wav'
daniele@160:                         [obj.s obj.fs obj.nBits] = wavread(varargin{1});
daniele@160:                     otherwise
daniele@160:                         error('Unsupported audio format')
daniele@160:                 end
daniele@160:             else
daniele@160:                 obj.s = varargin{1};
daniele@160:                 if nargin>1, obj.fs = varargin{2}; else obj.fs = []; end
daniele@160:                 if nargin>2, obj.nBits = varargin{3}; else obj.nBits = []; end
daniele@160:                 if nargin>3, obj.name = varargin{4}; else obj.name = []; end
daniele@160:                 if nargin>4, obj.format = varargin{5}; else obj.format = []; end
daniele@160:             end
daniele@160:         end
daniele@160:         
daniele@160:         %% Playback functions
daniele@160:         function player = play(obj, player)
daniele@160:             if ~exist('player','var') || isempty(player)
daniele@160:                 player = audioplayer(obj.s,obj.fs);
daniele@160:             end
daniele@160:             play(player);
daniele@160:         end
daniele@160:         
daniele@160:         function player = stop(obj, player)
daniele@160:             if ~exist('player','var') || isempty(player)
daniele@160:                 player = audioplayer(obj.s,obj.fs);
daniele@160:             end
daniele@160:             stop(player)
daniele@160:         end
daniele@160:         
daniele@160:         function player = pause(obj, player)
daniele@160:             if ~exist('player','var') || isempty(player)
daniele@160:                 player = audioplayer(obj.s,obj.fs);
daniele@160:             end
daniele@160:             pause(player)
daniele@160:         end
daniele@160:     end
daniele@160: end