将这个代码做成gui界面，分别有打开语音，语音增强以按钮

好的，下面是一个简单的Matlab GUI界面代码，包含打开语音和语音增强两个按钮：

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

% Last Modified by GUIDE v2.5 22-Oct-2021 15:00:39

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @speech_enhancement_gui_OpeningFcn, ...
                   'gui_OutputFcn',  @speech_enhancement_gui_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 speech_enhancement_gui is made visible.
function speech_enhancement_gui_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 speech_enhancement_gui (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

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

% Initialize variables
handles.y = [];
handles.fs = [];

% Update handles structure
guidata(hObject, handles);


% --- Outputs from this function are returned to the command line.
function varargout = speech_enhancement_gui_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)

% Open the audio file
[filename, pathname] = uigetfile({'*.wav'}, 'Select an audio file');
[y, fs] = audioread(fullfile(pathname, filename));

% Store the audio signal and sampling rate in handles structure
handles.y = y;
handles.fs = fs;

% Update GUI message
set(handles.text1, 'String', sprintf('Audio file "%s" loaded successfully.', filename));

% Update handles structure
guidata(hObject, handles);


% --- 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)

% Apply speech enhancement algorithm
if isempty(handles.y) || isempty(handles.fs)
    % If no audio file has been loaded, show an error message
    set(handles.text1, 'String', 'Please load an audio file first.');
else
    y_enhanced = speechEnhancement(handles.y, handles.fs);
    
    % Play the enhanced audio signal
    sound(y_enhanced, handles.fs);
    
    % Plot the original and enhanced signals
    t = (0:length(handles.y)-1) / handles.fs;
    axes(handles.axes1);
    plot(t, handles.y);
    hold on;
    plot(t, y_enhanced);
    legend('Original', 'Enhanced');
    xlabel('Time (s)');
    ylabel('Amplitude');
    hold off;
end

% Update handles structure
guidata(hObject, handles);

在这个GUI中，有两个按钮：打开语音文件和应用语音增强。点击“打开语音文件”按钮之后，会弹出文件选择对话框，让用户选择一个WAV格式的语音文件。选择完文件之后，程序会读取这个文件，存储语音信号和采样率，并在GUI界面中显示一个消息，告诉用户文件已经成功载入。

点击“应用语音增强”按钮之后，程序会检查是否有语音信号被载入，如果没有，则显示一个错误消息；如果有，则调用自定义的语音增强函数并将增强后的信号显示在GUI界面中。同时，程序还会播放增强后的语音信号，并绘制原始信号和增强后的信号的波形图。

注意，这个GUI中使用了自定义的语音增强函数`speechEnhancement`，需要根据实际情况修改该函数的代码。