【语音调制】基于matlab GUI语音幅度调制【含Matlab源码 292期】

一、简介

“调幅”就是调制幅度，高频信号的幅度随着音频信号幅度的改变而改变，当音频信号的幅度高时高频信号的幅度也跟着高，反之跟着变低，形成音频信号的幅度包络，但高频信号的频率没有变；

二、源代码

function varargout = AMtiaozhi(varargin)
% AMTIAOZHI M-file for AMtiaozhi.fig
%      AMTIAOZHI, by itself, creates a new AMTIAOZHI or raises the existing
%      singleton*.
%
%      H = AMTIAOZHI returns the handle to a new AMTIAOZHI or the handle to
%      the existing singleton*.
%
%      AMTIAOZHI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in AMTIAOZHI.M with the given input arguments.
%
%      AMTIAOZHI('Property','Value',...) creates a new AMTIAOZHI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before AMtiaozhi_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to AMtiaozhi_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 AMtiaozhi

% Last Modified by GUIDE v2.5 10-May-2010 16:42:40

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @AMtiaozhi_OpeningFcn, ...
                   'gui_OutputFcn',  @AMtiaozhi_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin & isstr(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 AMtiaozhi is made visible.
function AMtiaozhi_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 AMtiaozhi (see VARARGIN)

% Choose default command line output for AMtiaozhi
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes AMtiaozhi wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = AMtiaozhi_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 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
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end
set(hObject, 'String', {'调制信号', '载波信号','已调波信号'});


% --- 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 = 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 popupmenu2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu2 (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
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end

三、运行结果

四、备注

2014a