大连理工大学数字信号处理实验二电话拨号音的合成与识别

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1、大连理工大学实验报告学院（系）： 电信 专业： 电子信息工程 班级： 电子1204 姓 名： 梁宇 学号： 201281001 组： _ 实验时间： 实验室： 实验台： 指导教师签字： 成绩： 实验二、 拨号音的合成与识别一、实验题目和代码实现对 通信系统中拨号音合成与识别的仿真实现。系统界面设计：源程序：function varargout = sy2(varargin)% SY2, by itself, creates a new SY2 or raises the existing% singleton*.% H = SY2 returns the handle to a new SY2

2、 or the handle to% the existing singleton*.% SY2(CALLBACK,hObject,eventData,handles,.) calls the local% function named CALLBACK in SY2.M with the given input arguments.% SY2(Property,Value,.) creates a new SY2 or raises the% existing singleton*. Starting from the left, property value pairs are% appl

3、ied to the GUI before sy2_OpeningFcn gets called. An% unrecognized property name or invalid value makes property application% stop. All inputs are passed to sy2_OpeningFcn via varargin.% *See GUI Options on GUIDEs Tools menu. Choose GUI allows only one% instance to run (singleton).% See also: GUIDE,

4、 GUIDATA, GUIHANDLES % Edit the above text to modify the response to help sy2 % Last Modified by GUIDE v2.5 03-Jun-2015 23:06:41 % Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct(gui_Name, mfilename, . gui_Singleton, gui_Singleton, . gui_OpeningFcn, sy2_OpeningFcn, . gui_

5、OutputFcn, sy2_OutputFcn, . gui_LayoutFcn, , . gui_Callback, );if nargin & ischar(varargin1) gui_State.gui_Callback = str2func(varargin1);end if nargout varargout1:nargout = gui_mainfcn(gui_State, varargin:);else gui_mainfcn(gui_State, varargin:);end% End initialization code - DO NOT EDIT % - Execut

6、es just before sy2 is made visible.function sy2_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)%

7、 varargin command line arguments to sy2 (see VARARGIN) % Choose default command line output for sy2handles.output = hObject; handles.fs=8192;handles.DTMFsum=820;handles.DTMFnum=410;handles.NUM=;handles.numshow2=;% Update handles structureguidata(hObject, handles); % UIWAIT makes sy2 wait for user re

8、sponse (see UIRESUME)% uiwait(handles.figure1); % - Outputs from this function are returned to the command line.function varargout = sy2_OutputFcn(hObject, eventdata, handles) % varargout cell array for returning output args (see VARARGOUT);% hObject handle to figure% eventdata reserved - to be defi

9、ned in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) % Get default command line output from handles structurevarargout1 = handles.output; % - Executes on button press in num1.function num1_Callback(hObject, eventdata, handles)% hObject handle to num1 (see GCB

10、O)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n1=strcat(get(handles.numshow,string),1) %set(handles.numshow,string,n1); %n=1:handles.DTMFnum;d1=sin(2*pi*697/handles.fs*n)+sin(2*pi*1209/handles.fs*n);%space=zeros(1,hand

11、les.DTMFnum);%4100temp=d1,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d1,8192); % - Executes on button press in num2.function num2_Callback(hObject, eventdata, handles)% hObject handle to num2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB%

12、handles structure with handles and user data (see GUIDATA)n2=strcat(get(handles.numshow,string),2) %set(handles.numshow,string,n2); %n=1:handles.DTMFnum;d2=sin(2*pi*697/handles.fs*n)+sin(2*pi*1336/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d2,space;handles.NUM=handles.NUM,temp;%guidata(

13、hObject,handles);audioplayer(d2,8192); % - Executes on button press in num3.function num3_Callback(hObject, eventdata, handles)% hObject handle to num3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n3=strcat(ge

14、t(handles.numshow,string),3) %set(handles.numshow,string,n3); %n=1:handles.DTMFnum;d3=sin(2*pi*697/handles.fs*n)+sin(2*pi*1477/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d3,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d3,8192); % - Executes on button press in

15、 num4.function num4_Callback(hObject, eventdata, handles)% hObject handle to num4 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n4=strcat(get(handles.numshow,string),4) %set(handles.numshow,string,n4); %n=1:han

16、dles.DTMFnum;d4=sin(2*pi*770/handles.fs*n)+sin(2*pi*1209/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d4,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d4,8192); % - Executes on button press in num5.function num5_Callback(hObject, eventdata, handles)% hObject han

17、dle to num5 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n5=strcat(get(handles.numshow,string),5) %set(handles.numshow,string,n5); %n=1:handles.DTMFnum;d5=sin(2*pi*770/handles.fs*n)+sin(2*pi*1336/handles.fs*n)

18、;%space=zeros(1,handles.DTMFnum);%4100temp=d5,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d5,8192); % - Executes on button press in num6.function num6_Callback(hObject, eventdata, handles)% hObject handle to num6 (see GCBO)% eventdata reserved - to be defined in a future

19、 version of MATLAB% handles structure with handles and user data (see GUIDATA)n6=strcat(get(handles.numshow,string),6) %set(handles.numshow,string,n6); %n=1:handles.DTMFnum;d6=sin(2*pi*770/handles.fs*n)+sin(2*pi*1477/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d6,space;handles.NUM=handle

20、s.NUM,temp;%guidata(hObject,handles);audioplayer(d6,8192); % - Executes on button press in num7.function num7_Callback(hObject, eventdata, handles)% hObject handle to num7 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see

21、GUIDATA)n7=strcat(get(handles.numshow,string),7) %set(handles.numshow,string,n7); %n=1:handles.DTMFnum;d7=sin(2*pi*852/handles.fs*n)+sin(2*pi*1209/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d7,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d7,8192); % - Execute

22、s on button press in num8.function num8_Callback(hObject, eventdata, handles)% hObject handle to num8 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n8=strcat(get(handles.numshow,string),8) %set(handles.numshow,

23、string,n8); %n=1:handles.DTMFnum;d8=sin(2*pi*852/handles.fs*n)+sin(2*pi*1336/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d8,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d8,8192); % - Executes on button press in num9.function num9_Callback(hObject, eventdata, h

24、andles)% hObject handle to num9 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n9=strcat(get(handles.numshow,string),9) %set(handles.numshow,string,n9); %n=1:handles.DTMFnum;d9=sin(2*pi*852/handles.fs*n)+sin(2*p

25、i*1477/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d9,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d9,8192); % - Executes on button press in num10.function num10_Callback(hObject, eventdata, handles)% hObject handle to num10 (see GCBO)% eventdata reserved - to

26、 be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n=1:1000;num=get(handles.numshow,string);l=length(num);n10=strrep(num,num,num(1:l-1);d10=sin(0.7217*n)+sin(0.9273*n);set(handles.numshow,string,n10);L=length(handles.NUM);handles.NUM=handles.NUM(1:L-

27、820);guidata(hObject, handles);audioplayer(d10,8192); % - Executes on button press in num0.function num0_Callback(hObject, eventdata, handles)% hObject handle to num0 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDA

28、TA)n0=strcat(get(handles.numshow,string),0) %set(handles.numshow,string,n0); %n=1:handles.DTMFnum;d0=sin(2*pi*941/handles.fs*n)+sin(2*pi*1336/handles.fs*n);%space=zeros(1,handles.DTMFnum);%4100temp=d0,space;handles.NUM=handles.NUM,temp;%guidata(hObject,handles);audioplayer(d0,8192); % - Executes on

29、button press in num11.function num11_Callback(hObject, eventdata, handles)% hObject handle to num11 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)set(handles.numshow,string,get(handles.numshow,string),#);fs=819

30、2;fL=941;fH=1477;wL=2*pi*fL/fs;wH=2*pi*fH/fs;n=1:410;d12=sin(wL*n)+sin(wH*n);sound=d12,zeros(1,410);audioplayer(sound,fs)pause(.5);if isempty(handles.NUM) audioplayer(handles.NUM,fs); all_numdata=handles.NUM; n=length(handles.NUM)/820; rowf_mat=zeros(1,n); colf_mat=zeros(1,n); identify_result=; for

31、i=1:n d=all_numdata(i-1)*820+1:i*820); f=fft(d,fs); a=abs(f); p=a.*a/fs; value,rowf_mat(i)=max(p(1:1000); value,colf_mat(i)=max(p(1000:1700); colf_mat(i)=colf_mat(i)+1000; end for i=1:n rowf=rowf_mat(i); colf=colf_mat(i); if rowf730; row=1; elseif rowf810 row=2; elseif rowf900 row=3; else row=4; end

32、 if colf1272.5; col=1; elseif col=2; else col=3; end if row=4&col=2 row=1;col=0; end identify_result=strcat(identify_result,num2str(3*(row-1)+col); end set(handles.numshow2,string,identify_result);end实验结果：1. 拨号2. 删除二、总结、讨论和建议本次实验开始时用的wavplay函数实现拨号音，但是在电脑上运行时因为MATLAB版本较高，wavplay函数已删除，改为了audioplayer函数实现，但是audioplayer函数需要参数定义，查阅了很多资料也没有学到，以至于运行程序的时候，总是在“#”回显是因为audioplayer的缘故不能实现回显，没有完成语音信号的识别。但是在程序中编写了回显识别的函数，通过与其他同学的比对，程序理论没有发现错误，但是实际运行中就是无法实现回显识别功能，是本次实验的一大不足。其他部分没有太大的问题。同时通过本次实验进一步熟悉了MATLAB中GUI的操作。参考资料：