基于MATLAB的说话人识别系统

旧城等待， 2022-08-28 14:54 197阅读 0赞

**基于MATLAB的说话人识别系统**

1.  **语音识别的简单介绍**

基于MATLAB VQ算法的说话人识别系统，矢量量化起着双重作用。在训练阶段，把每一个说话者所提取的特征参数进行分类，产生不同码字所组成的码本。在识别(匹配)阶段，我们用VQ方法计算平均失真测度(本系统在计算距离d时，采用欧氏距离测度)，从而判断说话人是谁。

语音识别系统结构框图如图1所示**。**

![v2-c9248b1cdc3dc871433113ccf08dc050\_b.jpg][v2-c9248b1cdc3dc871433113ccf08dc050_b.jpg]

图1 语音识别系统结构框图

1.  **语者识别的概念**

语者识别就是根据说话人的语音信号来判别说话人的身份。语音是人的自然属性之一，由于说话人发音器官的生理差异以及后天形成的行为差异，每个人的语音都带有强烈的个人色彩，这就使得通过分析语音信号来识别说话人成为可能。用语音来鉴别说话人的身份有着许多独特的优点，如语音是人的固有的特征，不会丢失或遗忘；语音信号的采集方便，系统设备成本低；利用电话网络还可实现远程客户服务等。因此，近几年来，说话人识别越来越多的受到人们的重视。与其他生物识别技术如指纹识别、手形识别等相比较，说话人识别不仅使用方便，而且属于非接触性，容易被用户接受，并且在已有的各种生物特征识别技术中，是唯一可以用作远程验证的识别技术。因此，说话人识别的应用前景非常广泛：今天，说话人识别技术已经关系到多学科的研究领域，不同领域中的进步都对说话人识别的发展做出了贡献。说话人识别技术是集声学、语言学、计算机、信息处理和人工智能等诸多领域的一项综合技术，应用需求将十分广阔。在吃力语音信号的时候如何提取信号中关键的成分尤为重要。语音信号的特征参数的好坏直接导致了辨别的准确性。

1.  **演示分析**

我们的功能分为两部分:对已经保存的9个数字的语音进行辨别和实时的判断说话人说的是否为一个数.在前者的实验过程中,先把9个数字的声音保存成wav的格式,放在一个文件夹中,作为一个检测的数据库.然后对检测者实行识别,系统给出提示是哪个数字.

在第二个功能中,实时的录取一段说话人的声音作为模板,提取mfcc特征参数,随后紧接着进行遇着识别,也就是让其他人再说相同的话,看是否是原说话者.

**实验过程及具体功能如下**：

先打开Matlab 使Current Directory为录音及程序所所在的文件夹

再打开文件“enter.m”，点run运行，打开enter界面，点击“进入”按钮进入系统。（注：文件包未封装完毕，目前只能通过此方式打开运行。）（如下图figure1）

![v2-82135565898692329d617686846d038d\_b.jpg][v2-82135565898692329d617686846d038d_b.jpg]

**figure1**

**在对数据库中已有的语者进行识别模块:**

![v2-0eed17ff697edbe9d8c21361b734bffd\_b.jpg][v2-0eed17ff697edbe9d8c21361b734bffd_b.jpg]

选择载入语音库语音个数；

点击语音库录制模版进行已存语音信息的提取；

点击录音-test进行现场录音；

点击语者判断进行判断数字，并显示出来。

**在实时语者识别模块:**

![v2-642d967247aa64c249b6732fcb2a887e\_b.jpg][v2-642d967247aa64c249b6732fcb2a887e_b.jpg]

点击实时录制模板上的“录音-train”按钮,是把新语者的声音以wav格式存放在”实时模板”文件夹中, 接着点击“实时录制模板”，把新的模板提取特征值。随后点击实时语者识别模板上的“录音-train”按钮,是把语者的声音以wav格式存放在”测试”文件夹中,再点击“实时语者识别”，在对测得的声音提取特征值的同时，和实时模板进行比对，然后得出是否是实时模板中的语者。另外面板上的播放按钮都是播放相对应左边录取的声音。

想要测量多次，只要接着录音，自动保存，然后程序比对音频就可以。

退出只要点击菜单File/Exit，退出程序。

运行代码

附：GUI程序代码  
function varargout = untitled2(varargin)  
% UNTITLED2 M-file for untitled2.fig  
% UNTITLED2, by itself, creates a new UNTITLED2 or raises the existing  
% singleton\*.  
%  
% H = UNTITLED2 returns the handle to a new UNTITLED2 or the handle to  
% the existing singleton\*.  
%  
% UNTITLED2('CALLBACK',hObject,eventData,handles,...) calls the local  
% function named CALLBACK in UNTITLED2.M with the given input arguments.  
%  
% UNTITLED2('Property','Value',...) creates a new UNTITLED2 or raises the  
% existing singleton\*. Starting from the left, property value pairs are  
% applied to the GUI before untitled2\_OpeningFunction gets called. An  
% unrecognized property name or invalid value makes property application  
% stop. All inputs are passed to untitled2\_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  
  
% Copyright 2002-2003 The MathWorks, Inc.  
  
% Edit the above text to modify the response to help untitled2  
  
% Last Modified by GUIDE v2.5 08-Jun-2010 23:58:57  
% Begin initialization code - DO NOT EDIT  
gui\_Singleton = 1;  
gui\_State = struct('gui\_Name', mfilename, ...  
'gui\_Singleton', gui\_Singleton, ...  
'gui\_OpeningFcn', @untitled2\_OpeningFcn, ...  
'gui\_OutputFcn', @untitled2\_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 untitled2 is made visible.  
function untitled2\_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 untitled2 (see VARARGIN)  
% Choose default command line output for untitled2  
handles.output = hObject;  
% Update handles structure  
guidata(hObject, handles);  
axes(findobj('tag','axes13'));  
imshow('3.jpg');  
axes(findobj('tag','axes12'));  
imshow('1.jpg');  
% UIWAIT makes untitled2 wait for user response (see UIRESUME)  
% uiwait(handles.figure1);  
% --- Outputs from this function are returned to the command line.  
function varargout = untitled2\_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)  
Channel\_Str=get(handles.popupmenu3,'String');  
Channel\_Number=str2double(Channel\_Str\{get(handles.popupmenu3,'Value')\});  
global moodle;  
moodle = train('模版\\',Channel\_Number) %¶Ô´ýÇóÓïÒô½øÐÐÌáÈ¡Âë±¾  
% --- 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  
% handglobal data1;  
global moodle ;  
test('测试\\',1,moodle)%ÊµÊ±ÓïÒô¼ì²â  
% --------------------------------------------------------------------  
function Open\_Callback(hObject, eventdata, handles)  
% hObject handle to Open (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
\[filename,pathname\]=uigetfile('')  
file=get(handles.edits,\[filename,pathname\])  
\[y,f,b\]=wavread(file);  
% --------------------------------------------------------------------  
function Exit\_Callback(hObject, eventdata, handles)  
% hObject handle to Exit (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
exit  
% --------------------------------------------------------------------  
function About\_Callback(hObject, eventdata, handles)  
% hObject handle to About (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
H=\['语者识别'\]  
helpdlg(H,'help text')  
% --------------------------------------------------------------------  
function File\_Callback(hObject, eventdata, handles)  
% hObject handle to File (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
% --------------------------------------------------------------------  
function Edit\_Callback(hObject, eventdata, handles)  
% hObject handle to Edit (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
% --------------------------------------------------------------------  
function Help\_Callback(hObject, eventdata, handles)  
% hObject handle to Help (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
% --- Executes on button press in pushbutton7.  
function pushbutton7\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton7 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
msg='请速度录音¡'  
msgbox(msg)  
clear  
global data1;  
%global dataDN1;  
AI = analoginput('winsound');  
chan = addchannel(AI,1:2);  
duration = 3; %1 second acquisition  
set(AI,'SampleRate',8000)  
ActualRate = get(AI,'SampleRate');  
set(AI,'SamplesPerTrigger',duration\*ActualRate)  
set(AI,'TriggerType','Manual')  
blocksize = get(AI,'SamplesPerTrigger');  
Fs = ActualRate;  
start(AI)  
trigger(AI)  
\[data1,time,abstime,events\] = getdata(AI);  
fname=sprintf('E:\\\\Matlab语音识别系统\\\\实时模版\\\\s1.wav')  
%dataDN1=wden(data1,'heursure','s','one',5,'sym8');denoise  
wavwrite(data1,fname)  
msgbox(fname)  
% --- Executes on button press in pushbutton8.  
function pushbutton8\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton8 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
global data1;  
%global dataDN1;  
sound(data1)  
%sound(dataDN1)  
axes(handles.axes1)%set to plot at axes1  
plot(data1);  
%plot(dataDN1);  
xlabel('训练采样序列'),ylabel('信号幅');  
%xlabel('ÑµÁ·²ÉÑùÐòÁÐ'),ylabel('sym8Ð¡²¨½µÔëºóµÄÐÅºÅ·ù');  
grid on;  
clear  
% --- Executes on button press in pushbutton9.  
function pushbutton9\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton9 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
msg='请速度录音¡'  
msgbox(msg)  
clear  
global data2;  
%global dataDN2;  
AI = analoginput('winsound');  
chan = addchannel(AI,1:2);  
duration = 3; %1 second acquisition  
set(AI,'SampleRate',8000)  
ActualRate = get(AI,'SampleRate');  
set(AI,'SamplesPerTrigger',duration\*ActualRate)  
set(AI,'TriggerType','Manual')  
blocksize = get(AI,'SamplesPerTrigger');  
Fs = ActualRate;  
start(AI)  
trigger(AI)  
\[data2,time,abstime,events\] = getdata(AI);  
fname=sprintf('E:\\\\Matlab语音识别系统\\\\测试\\\\s1.wav')  
%dataDN1=wden(data1,'heursure','s','one',5,'sym8');denoise  
wavwrite(data2,fname)  
msgbox(fname)  
% --- Executes on button press in pushbutton10.  
function pushbutton10\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton10 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
global data2;  
%global dataDN2;  
sound(data2)  
%sound(dataDN2)  
axes(handles.axes2)%set to plot at axes1  
plot(data2);  
%plot(dataDN2);  
xlabel('测试采样序列'),ylabel('信号幅');  
%xlabel('²âÊÔ²ÉÑùÐòÁÐ'),ylabel('sym8Ð¡²¨½µÔëºóµÄÐÅºÅ·ù');%%  
grid on;  
clear  
% --- Executes on button press in pushbutton11.  
function pushbutton11\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton11 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
global moodle ;  
testDB('测试\\',1,moodle)  
% --- Executes on button press in pushbutton12.  
function pushbutton12\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton12 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
global moodle;  
moodle = train('实时模板\\',1)  
% --- Executes on selection change in popupmenu3.  
function popupmenu3\_Callback(hObject, eventdata, handles)  
% hObject handle to popupmenu3 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
% Hints: contents = get(hObject,'String') returns popupmenu3 contents as cell array  
% contents\{get(hObject,'Value')\} returns selected item from popupmenu3  
str=get(handles.popupmenu3,'String');  
val=str2num(str\{get(handles.popupmenu3,'Value')\});  
switch val  
case 1  
case 2  
case 3  
case 4  
case 5  
case 6  
case 7  
case 8  
case 9  
end  
% --- Executes during object creation, after setting all properties.  
function popupmenu3\_CreateFcn(hObject, eventdata, handles)  
% hObject handle to popupmenu3 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles empty - handles not created until after all CreateFcns called  
% Hint: popupmenu controls usually have a white background on Windows.  
% See ISPC and COMPUTER.  
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))  
set(hObject,'BackgroundColor','white');  
end  
% --- Executes on button press in pushbutton9.  
function pushbutton13\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton9 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
% --- Executes on button press in pushbutton10.  
function pushbutton14\_Callback(hObject, eventdata, handles)  
% hObject handle to pushbutton10 (see GCBO)  
% eventdata reserved - to be defined in a future version of MATLAB  
% handles structure with handles and user data (see GUIDATA)  
% --- Executes during object creation, after setting all properties.  
%function axes8\_CreateFcn(hObject, eventdata, handles)  
% hObject handle to axes8 (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 axes8

[v2-c9248b1cdc3dc871433113ccf08dc050_b.jpg]: /images/20220828/0d4d3e500f34438f96e9bf3dd092b0ab.png
[v2-82135565898692329d617686846d038d_b.jpg]: /images/20220828/a99e5b15bfea4e37af60aa670a4d003e.png
[v2-0eed17ff697edbe9d8c21361b734bffd_b.jpg]: /images/20220828/77682007a9fd440fb41f521a933e1035.png
[v2-642d967247aa64c249b6732fcb2a887e_b.jpg]: /images/20220828/9c88077a78b8473797171c097852f42c.png