matlab语音处理 gui(快放，加噪，去噪，录音)

function varargout = yuyinchuli(varargin) % YUYINCHULI M-file for yuyinchuli.fig % YUYINCHULI, by itself, creates a new YUYINCHULI or raises the existing % singleton*. % % H = YUYINCHULI returns the handle to a new YUYINCHULI or the handle to % the existing singleton*. % % YUYINCHULI('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in YUYINCHULI.M with the given input arguments. % % YUYINCHULI('Property','Value',...) creates a new YUYINCHULI or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before yuyinchuli_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to yuyinchuli_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 yuyinchuli % Last Modified by GUIDE v2.5 30-Jun-2014 21:47:00 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @yuyinchuli_OpeningFcn, ... 'gui_OutputFcn', @yuyinchuli_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 yuyinchuli is made visible. function yuyinchuli_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 yuyinchuli (see VARARGIN) % Choose default command line output for yuyinchuli handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes yuyinchuli wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = yuyinchuli_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) global y; varargout{1} = handles.output; prompt = {'请确定录音时间(s)：','设定录音频率：'}; dlg_title = '语音录制'; num_lines = 1; def = {'5','44100'}; %默认值 ti = inputdlg(prompt,dlg_title,num_lines,def,'on');% 调出输入对话框 t=str2double(ti{1}); f=str2double(ti{2}); %录制固定时间的声音 y=wavrecord(t*f,f); %将文件写入工作空间 wavwrite(y,f,'录音.wav'); %画出波形 axes(handles.axes1); plot(y); msgbox('录音完毕！','提示'); % --- 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) global x; %全局变量声明 global Fs; Fs=8000;%采样率8khz [filename,pathname]=... uigetfile('*.wav','读取语音文件'); str=[pathname filename];%合成路径+文件名 x=wavread(str);%读取语音 wavplay(x,44100); x=x/max(x); %归一化 plot(handles.axes1,x,'k');%绘制语音波形 title('原语音波形'); % --- 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) close(gcf) % --- Executes on button press in radiobutton1. function radiobutton1_Callback(hObject, eventdata, handles) % hObject handle to radiobutton1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hint: get(hObject,'Value') returns toggle state of radiobutton1 % --- Executes when selected object is changed in uipanel1. function uipanel1_SelectionChangeFcn(hObject, eventdata, handles) % hObject handle to the selected object in uipanel1 % eventdata structure with the following fields (see UIBUTTONGROUP) % EventName: string 'SelectionChanged' (read only) % OldValue: handle of the previously selected object or empty if none was selected % NewValue: handle of the currently selected object % handles structure with handles and user data (see GUIDATA) global x; %全局变量声明 global fs; global s; global q; str=get(hObject,'string'); axes(handles.axes1); switch str case'原语音' sound(x,22050); plot(x,'k'); title('原语音波形'); case '语音快进' prompt = {'请输入快放倍数：'}; dlg_title = '快放'; num_lines = 1; def = {'3'}; %默认值 ti = inputdlg(prompt,dlg_title,num_lines,def,'on');% 调出输入对话框 t=str2double(ti{1}); wavplay(x,22050*t);%播放处理后声音文件 plot(x,'r');%绘制语音波形 title('语音快放波形'); case '语音慢放' prompt = {'请输入慢放倍数：'}; dlg_title = '慢放'; num_lines = 1; def = {'3'}; %默认值 ti = inputdlg(prompt,dlg_title,num_lines,def,'on');% 调出输入对话框 t=str2double(ti{1}); wavplay(x,44100/t);%播放处理后声音文件 plot(x,'b'); title('语音慢放波形'); case '语音加噪' n =length(x) %求出语音信号的长度 noise=0.03*randn(n,1);%随机函数产生噪声 size(x); size(noise); s=x+noise; %语音信号加入噪声 sound(s,44100); plot(s,'g'); title('加噪后的语音波形'); case '语音去噪' wpd=2*pi*50/1000; wsd=2*pi*70/1000;%确定截止频率 Btd=wsd - wpd; %计算过渡带宽 wcd=(wsd+wpd)/2/pi;%计算3db截止频率 Md=ceil(6.6*pi/Btd); hnd=fir1(Md,wcd); yyd=filter(hnd,1,s); sound(yyd,44100); %去噪后 YYd=fft(yyd); plot(abs(YYd)); title('滤波后的频域波形'); end; % --- Executes during object creation, after setting all properties. function axes1_CreateFcn(hObject, eventdata, handles) % hObject handle to axes1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles empty - handles not created until after all CreateFcns called % Hint: place code in OpeningFcn to populate axes1 % --- Executes on button press in text3. function text3_Callback(hObject, eventdata, handles) % hObject handle to text3 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)