1 案例背景
2 理论基础
function varargout = EmotionRec(varargin) % EMOTIONREC M-file for EmotionRec.fig % EMOTIONREC, by itself, creates a new EMOTIONREC or raises the existing % singleton*. % % H = EMOTIONREC returns the handle to a new EMOTIONREC or the handle to % the existing singleton*. % % EMOTIONREC('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in EMOTIONREC.M with the given input arguments. % % EMOTIONREC('Property','Value',...) creates a new EMOTIONREC or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before EmotionRec_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to EmotionRec_OpeningFcn via varargin. % % *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one % instance to run (singleton)". % % See also: GUIDE, GUIDATA, GUIHANDLES % Edit the above text to modify the response to help EmotionRec % Last Modified by GUIDE v2.5 12-May-2013 18:24:47 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @EmotionRec_OpeningFcn, ... 'gui_OutputFcn', @EmotionRec_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []); if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1}); end if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code - DO NOT EDIT % --- Executes just before EmotionRec is made visible. function EmotionRec_OpeningFcn(hObject, eventdata, handles, varargin) % This function has no output args, see OutputFcn. % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % varargin command line arguments to EmotionRec (see VARARGIN) % Choose default command line output for EmotionRec handles.output = hObject; addpath(fullfile(pwd, 'voicebox')); clc; axes(handles.axes1); cla reset; box on; set(gca, 'XTick', [], 'YTick', [], ... 'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000]); set(handles.axes2, 'XTick', [], 'YTick', [], ... 'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], ... 'Box', 'On'); handles.dirName = 0; handles.S = 0; handles.fileurl = 0; % Update handles structure guidata(hObject, handles); % UIWAIT makes EmotionRec wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = EmotionRec_OutputFcn(hObject, eventdata, handles) % varargout cell array for returning output args (see VARARGOUT); % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Get default command line output from handles structure varargout{1} = handles.output; % --- Executes on button press in pushbutton1. function pushbutton1_Callback(hObject, eventdata, handles) % hObject handle to pushbutton1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %% 载入语音库 % 数据库路径 dirName = './wav/Database'; dirName = uigetdir(dirName); if isequal(dirName, 0) return; end msgbox(sprintf('载入%s成功!', dirName), '提示信息'); handles.dirName = dirName; guidata(hObject, handles); % --- Executes on button press in pushbutton2. function pushbutton2_Callback(hObject, eventdata, handles) % hObject handle to pushbutton2 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %% 提取特征参数 if isequal(handles.dirName, 0) msgbox('请选择音频库目录', '提示信息', 'modal'); return; end S = GetDatabase(handles.dirName); handles.S = S; guidata(hObject, handles); msgbox('音频信号特征提取完毕', '提示信息', 'modal'); % --- Executes on button press in pushbutton3. function pushbutton3_Callback(hObject, eventdata, handles) % hObject handle to pushbutton3 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %% 选择测试文件 file = './wav/Test/1.wav'; [Filename, Pathname] = uigetfile('*.wav', '打开新的语音文件',... file); if Filename == 0 return; end fileurl = fullfile(Pathname,Filename); [signal, fs] = audioread(fileurl); axes(handles.axes1); cla reset; box on; plot(signal); title('待识别语音信号', 'FontWeight', 'Bold'); msgbox('载入语音文件成功', '提示信息', 'modal'); handles.fileurl = fileurl; handles.signal = signal; handles.fs = fs; guidata(hObject, handles); % --- Executes on button press in pushbutton4. function pushbutton4_Callback(hObject, eventdata, handles) % hObject handle to pushbutton4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %% 识别 if isequal(handles.fileurl, 0) msgbox('请选择音频文件', '提示信息', 'modal'); return; end if isequal(handles.S, 0) msgbox('请计算音频库MFCC特征', '提示信息', 'modal'); return; end S = handles.S; [num, MC] = Reco(S, handles.fileurl); result = S(num).name; result = result(1:2); c = 'r'; function MC = GetFeather(file, flag) if nargin < 2 flag = 0; end if nargin < 1 file = '.\wav\Database\关闭\关闭_bsm.wav'; end [signal, fs] = audioread(file); framelength = 1024; framenumber = fix(length(signal)/framelength); for L = 1:framenumber for m = 1:framelength framedata(m) = signal((L-1)*framelength+m); end E(L) = sum(framedata.^2); end if flag figure; plot(E); end meanE = mean(E); startflag=0; startnum=0; startframe=0; endframe = 0; S = []; for L = 1 : framenumber if E(L) > meanE startnum = startnum+1; if startnum == 2 startframe = L-2; startflag = 1; end end if E(L) < meanE if startflag == 1 endframe = L-1; S = [S; startframe endframe]; startflag = 0; startnum = 0; end end end if size(S, 1) > 1 ms = min(S(:, 1)); es = max(S(:, 2)); else ms = S(1); es = S(2); end MC = []; snum = 1; for i = ms : es si = (i-1)*framelength; ei = i*framelength; fi = signal(si:ei); mc = mfcc(fi,fs); MC{snum} = mc; snum = snum + 1; end
版本:2014a
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