【语音处理】基于matlab实现语音基频检测

最新推荐文章于 2024-04-06 20:11:19 发布

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最新推荐文章于 2024-04-06 20:11:19 发布

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分类专栏：信号处理文章标签： matlab 语音识别开发语言

本文链接：https://blog.youkuaiyun.com/matlab_dingdang/article/details/125283970

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1 简介

随着智能化设备的广泛普及,语音信号作为智能化设备的一个重要的交互语言显得尤为重要,语音信号处理被广泛地应用在语音识别,智能控制,身份识别,智能家居等领域,MATLAB仿真软件具有强大的信号处理功能,能对语音信号进行平移,尺度变换,系统分析,时频转换和滤波等操作,文章借助MATLAB软件对语音信号进行处理,实现对语音信号的音效处理,时频分析,滤波处理等功能.

2 部分代码

function varargout = zuoye(varargin)% ZUOYE MATLAB code for zuoye.fig%      ZUOYE, by itself, creates a new ZUOYE or raises the existing%      singleton*.%%      H = ZUOYE returns the handle to a new ZUOYE or the handle to%      the existing singleton*.%%      ZUOYE('CALLBACK',hObject,eventData,handles,...) calls the local%      function named CALLBACK in ZUOYE.M with the given input arguments.%%      ZUOYE('Property','Value',...) creates a new ZUOYE or raises the%      existing singleton*.  Starting from the left, property value pairs are%      applied to the GUI before zuoye_OpeningFcn gets called.  An%      unrecognized property name or invalid value makes property application%      stop.  All inputs are passed to zuoye_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 zuoye% Last Modified by GUIDE v2.5 03-May-2020 17:00:59% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name',       mfilename, ...                   'gui_Singleton',  gui_Singleton, ...                   'gui_OpeningFcn', @zuoye_OpeningFcn, ...                   'gui_OutputFcn',  @zuoye_OutputFcn, ...                   'gui_LayoutFcn',  [] , ...                   'gui_Callback',   []);if nargin && ischar(varargin{1})    gui_State.gui_Callback = str2func(varargin{1});endif 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 zuoye is made visible.function zuoye_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 zuoye (see VARARGIN)% Choose default command line output for zuoyehandles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes zuoye wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = zuoye_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 structurevarargout{1} = handles.output;% --- Executes on selection change in popupmenu1.function popupmenu1_Callback(hObject, eventdata, handles)% hObject    handle to popupmenu1 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)% Hints: contents = cellstr(get(hObject,'String')) returns popupmenu1 contents as cell array%        contents{get(hObject,'Value')} returns selected item from popupmenu1% --- Executes during object creation, after setting all properties.function popupmenu1_CreateFcn(hObject, eventdata, handles)% hObject    handle to popupmenu1 (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 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 x;global fs;global bits;global file;clear sound;if nargin<1;action='initialized';end;[fname,pname]=uigetfile('*.wav','Open Wave File');file=[pname,fname];[x,fs,bits]=wavread(file);       % 读入声音文件（*.wav）      sound(x,fs);set(handles.edit1,'string',fs); % --- 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)%画原信号时域波形global x;global w;global fs;axes(handles.axes1);N=length(x);t=[0:1:N-1]/fs;plot(t,x);xlabel('时间t')ylabel('幅值')n=[0:N-1]';w=2*n*pi/N;% --- 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)%画原信号时域波形global x;global w;X=fft(x);axes(handles.axes2);plot(w/pi,abs(X))axis([0,2,0,500])xlabel('归一化')ylabel('幅值')% --- Executes on button press in pushbutton4.% --- Executes on button press in pushbutton5.function pushbutton5_Callback(hObject, eventdata, handles)% hObject    handle to pushbutton5 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)global pitchglobal nFramesaxes(handles.axes2);xt=1:nFrames;xt=20*xt;plot(xt,pitch)xlim([0,3]);axis([xt(1) xt(nFrames) 0 max(pitch)+50]);ylabel('基音频率/HZ');xlabel('时间');% --- Executes on button press in pushbutton6.function pushbutton6_Callback(hObject, eventdata, handles)% hObject    handle to pushbutton6 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)global ybiansu;global fs;axes(handles.axes1);N=length(ybiansu);t=[0:1:N-1]/fs;plot(t,ybiansu);xlabel('时间t')ylabel('幅值')% --- 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)global ybiansu;NS=length(ybiansu);nS=[0:NS-1]';wS=2*nS*pi/NS;YH=fft(ybiansu);axes(handles.axes2);plot(wS/pi,abs(YH))axis([0,2,0,500])xlabel('归一化')ylabel('幅值')% --- 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)%画重采样时域波形global x2;global fs;axes(handles.axes1);N=length(x2);t=[0:1:N-1]/fs;plot(t,x2);xlabel('时间t')ylabel('幅值')% --- 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)global x2;X2=fft(x2);NS=length(x2);nS=[0:NS-1]';wS=2*nS*pi/NS;axes(handles.axes2);plot(wS/pi,abs(X2))axis([0,2,0,500])xlabel('归一化')ylabel('幅值')function edit1_Callback(hObject, eventdata, handles)% hObject    handle to edit1 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)% Hints: get(hObject,'String') returns contents of edit1 as text%        str2double(get(hObject,'String')) returns contents of edit1 as a double% --- Executes during object creation, after setting all properties.function edit1_CreateFcn(hObject, eventdata, handles)% hObject    handle to edit1 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    empty - handles not created until after all CreateFcns called% Hint: edit 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 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)%进行滤波global x;global fs;global pitch;global nFrames;xn=x;meen=mean(xn);xn= xn - meen;%去均值fRate=floor(40*fs/1000);%帧长40ms 一共640个点   floor不大于x的最大整数updRate=floor(20*fs/1000);%帧移20msn_samples=length(xn);%语音长度nFrames=floor(n_samples/updRate)-1; %帧数k=1;pitch=zeros(1,nFrames);%处理后基频矩阵f0=zeros(1,nFrames);%基频矩阵LF=floor(fs/500);%设置基音搜索的范围  点数HF=floor(fs/70);%设置基音搜索的范围  点数m=1;avgF0=0;for t=1:nFrames        yin=xn(k:k+fRate-1);%当前帧数据        frameSize=length(yin);        yin2=yin.*hamming(frameSize);  % 加hamming窗        cn1=rceps(yin2);        cn=cn1(LF:HF);%求倒谱        [mx_cep ind]=max(cn);%求倒谱最大值        if mx_cep > 0.08 & ind >LF%设置门限，找到峰值位置           a= fs/(LF+ind);        else            a=0;        end         f0(t)=a;        if t>2 & nFrames>3              z=f0(t-2:t);           md=median(z);%中值滤波对基音轨迹图进行平滑           pitch(t-2)=md;           if md > 0             avgF0=avgF0+md;             m=m+1;           end        else            if nFrames<=3            pitch(t)=a;            avgF0=avgF0+a;            m=m+1;           end         end     k=k+updRate;endMypitch = max(pitch);set(handles.edit2,'string',Mypitch); Myt=1/Mypitch;set(handles.edit5,'string',Myt); function edit2_Callback(hObject, eventdata, handles)% hObject    handle to edit2 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)% Hints: get(hObject,'String') returns contents of edit2 as text%        str2double(get(hObject,'String')) returns contents of edit2 as a double% --- Executes during object creation, after setting all properties.function edit2_CreateFcn(hObject, eventdata, handles)% hObject    handle to edit2 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    empty - handles not created until after all CreateFcns called% Hint: edit 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 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 x;global fs;global ybiansuclear sound;vv=str2double(get(handles.edit3,'String'))%读取变速的倍数N=length(x)n1=0:N-1;n2=0:vv:N-1;ybiansu=interp1(n1,x,n2,'nearest');sound(ybiansu,fs)function edit3_Callback(hObject, eventdata, handles)% hObject    handle to edit3 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)% Hints: get(hObject,'String') returns contents of edit3 as text%        str2double(get(hObject,'String')) returns contents of edit3 as a double% --- Executes during object creation, after setting all properties.function edit3_CreateFcn(hObject, eventdata, handles)% hObject    handle to edit3 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    empty - handles not created until after all CreateFcns called% Hint: edit 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 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 x;global fs;global x2;clear sound;fs2=str2double(get(handles.edit4,'String'));function edit5_Callback(hObject, eventdata, handles)% hObject    handle to edit5 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)% Hints: get(hObject,'String') returns contents of edit5 as text%        str2double(get(hObject,'String')) returns contents of edit5 as a double% --- Executes during object creation, after setting all properties.function edit5_CreateFcn(hObject, eventdata, handles)% hObject    handle to edit5 (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    empty - handles not created until after all CreateFcns called% Hint: edit 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