1 簡介

針對數(shù)字信號處理實(shí)驗(yàn)課程教學(xué)情況,以鞏固學(xué)生理論知識,提高實(shí)際動手能力為目的,利用Matlab軟件平臺,對"數(shù)字信號處理"課程的綜合性實(shí)驗(yàn)設(shè)計(jì)進(jìn)行了探討和研究.通過綜合性實(shí)驗(yàn)的設(shè)計(jì),使學(xué)生深刻地掌握信號處理的方法,培養(yǎng)學(xué)生的創(chuàng)新能力和實(shí)際動手能力.

2 部分代碼

function varargout = balancer(varargin)% BALANCER MATLAB code for balancer.fig% ? ? ?BALANCER, by itself, creates a new BALANCER or raises the existing% ? ? ?singleton*.%% ? ? ?H = BALANCER returns the handle to a new BALANCER or the handle to% ? ? ?the existing singleton*.%% ? ? ?BALANCER('CALLBACK',hObject,eventData,handles,...) calls the local% ? ? ?function named CALLBACK in BALANCER.M with the given input arguments.%% ? ? ?BALANCER('Property','Value',...) creates a new BALANCER or raises the% ? ? ?existing singleton*. ?Starting from the left, property value pairs are% ? ? ?applied to the GUI before balancer_OpeningFcn gets called. ?An% ? ? ?unrecognized property name or invalid value makes property application% ? ? ?stop. ?All inputs are passed to balancer_OpeningFcn via varargin.%% ? ? ?*See GUI Options on GUIDE's Tools menu. ?Choose "GUI allows only one% ? ? ?instance to run (singleton)".% % Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', ? ? ? mfilename, ... ? ? ? ? ? ? ? ? ? 'gui_Singleton', ?gui_Singleton, ... ? ? ? ? ? ? ? ? ? 'gui_OpeningFcn', @balancer_OpeningFcn, ... ? ? ? ? ? ? ? ? ? 'gui_OutputFcn', ?@balancer_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 balancer is made visible.function balancer_OpeningFcn(hObject, eventdata, handles, varargin)% This function has no output args, see OutputFcn.% hObject ? ?handle to audio_begin% 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 balancer (see VARARGIN)% Choose default command line output for balancerhandles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes balancer wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = balancer_OutputFcn(hObject, eventdata, handles) % varargout ?cell array for returning output args (see VARARGOUT);% hObject ? ?handle to audio_begin% 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 button press in audioload.function audioload_Callback(hObject, eventdata, handles)% hObject ? ?handle to audioload (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?[FileName] = uigetfile('*','Select the audio file'); ? ?[handles.audio , handles.audioFs ] = audioread(FileName) ; ? ?Audio_f = abs( fft(handles.audio) ); ? ?plot( handles.audio_begin,Audio_f ); ? ?handles.audioname.String = FileName; ? ?handles.audio_100 = fx_FIR( handles.audioFs, 1 ,100 , handles.audio); ? ?handles.audio_200 = fx_FIR( handles.audioFs, 100 ,200 , handles.audio); ? ?handles.audio_500 = fx_FIR( handles.audioFs, 200 ,500 , handles.audio); ? ?handles.audio_1K = fx_FIR( handles.audioFs, 500 ,1000 , handles.audio); ? ?handles.audio_2K = fx_FIR( handles.audioFs, 1000 ,2000 , handles.audio); ? ?handles.audio_4K = fx_FIR( handles.audioFs, 2000 ,4000 , handles.audio); ? ?handles.audio_8K = fx_FIR( handles.audioFs, 4000 ,8000 , handles.audio); ? ?handles.audio_16K = fx_FIR( handles.audioFs, 8000 ,20000 , handles.audio); ? ?%now_audio = audio_1K; ? ?handles.now_audio = handles.audio_100 + handles.audio_200 + handles.audio_500 + handles.audio_1K + handles.audio_2K + handles.audio_4K + handles.audio_8K + handles.audio_16K; ? ?sound( handles.now_audio , handles.audioFs ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff ); end% Update handles structureguidata(hObject, handles);function audioname_Callback(hObject, eventdata, handles)% hObject ? ?handle to audioname (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 audioname as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of audioname as a double% --- Executes during object creation, after setting all properties.function audioname_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to audioname (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 slider movement.function Freq100_Callback(hObject, eventdata, handles)% hObject ? ?handle to Freq100 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?a = get(handles.Freq100 , 'Value'); ? ?b = get(handles.Freq200 , 'Value'); ? ?c = get(handles.Freq500 , 'Value'); ? ?d = get(handles.Freq1K , 'Value'); ? ?e = get(handles.Freq2K , 'Value'); ? ?f = get(handles.Freq4K , 'Value'); ? ?g = get(handles.Freq8K , 'Value'); ? ?h = get(handles.Freq16K , 'Value'); ? ?handles.Freq100num.String = num2str( a*100 ); ? ?all = get(handles.audiovoice , 'Value'); ? ?handles.now_audio = all*( a*handles.audio_100 + b*handles.audio_200 + c*handles.audio_500 + d*handles.audio_1K + e*handles.audio_2K + f*handles.audio_4K + g*handles.audio_8K + h*handles.audio_16K ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff ); endguidata(hObject, handles);% Hints: get(hObject,'Value') returns position of slider% ? ? ? ?get(hObject,'Min') and get(hObject,'Max') to determine range of slider% --- Executes during object creation, after setting all properties.function Freq100_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq100 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes on slider movement.function slider7_Callback(hObject, eventdata, handles)% hObject ? ?handle to slider7 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% --- Executes during object creation, after setting all properties.function Freq500_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq500 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes on slider movement.function Freq1K_Callback(hObject, eventdata, handles)% hObject ? ?handle to Freq1K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?a = get(handles.Freq100 , 'Value'); ? ?b = get(handles.Freq200 , 'Value'); ? ?c = get(handles.Freq500 , 'Value'); ? ?d = get(handles.Freq1K , 'Value'); ? ?e = get(handles.Freq2K , 'Value'); ? ?f = get(handles.Freq4K , 'Value'); ? ?g = get(handles.Freq8K , 'Value'); ? ?h = get(handles.Freq16K , 'Value'); ? ?handles.Freq1Knum.String = num2str( d*100 ); ? ?all = get(handles.audiovoice , 'Value'); ? ?handles.now_audio = all*( a*handles.audio_100 + b*handles.audio_200 + c*handles.audio_500 + d*handles.audio_1K + e*handles.audio_2K + f*handles.audio_4K + g*handles.audio_8K + h*handles.audio_16K ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff );endguidata(hObject, handles);% Hints: get(hObject,'Value') returns position of slider% ? ? ? ?get(hObject,'Min') and get(hObject,'Max') to determine range of slider% --- Executes during object creation, after setting all properties.function Freq1K_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq1K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes on slider movement.function Freq2K_Callback(hObject, eventdata, handles)% hObject ? ?handle to Freq2K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?a = get(handles.Freq100 , 'Value'); ? ?b = get(handles.Freq200 , 'Value'); ? ?c = get(handles.Freq500 , 'Value'); ? ?d = get(handles.Freq1K , 'Value'); ? ?e = get(handles.Freq2K , 'Value'); ? ?f = get(handles.Freq4K , 'Value'); ? ?g = get(handles.Freq8K , 'Value'); ? ?h = get(handles.Freq16K , 'Value'); ? ?handles.Freq2Knum.String = num2str( e*100 ); ? ?all = get(handles.audiovoice , 'Value'); ? ?handles.now_audio = all*( a*handles.audio_100 + b*handles.audio_200 + c*handles.audio_500 + d*handles.audio_1K + e*handles.audio_2K + f*handles.audio_4K + g*handles.audio_8K + h*handles.audio_16K ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff );endguidata(hObject, handles);% Hints: get(hObject,'Value') returns position of slider% ? ? ? ?get(hObject,'Min') and get(hObject,'Max') to determine range of slider% --- Executes during object creation, after setting all properties.function Freq2K_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq2K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes on slider movement.function Freq4K_Callback(hObject, eventdata, handles)% hObject ? ?handle to Freq4K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?a = get(handles.Freq100 , 'Value'); ? ?b = get(handles.Freq200 , 'Value'); ? ?c = get(handles.Freq500 , 'Value'); ? ?d = get(handles.Freq1K , 'Value'); ? ?e = get(handles.Freq2K , 'Value'); ? ?f = get(handles.Freq4K , 'Value'); ? ?g = get(handles.Freq8K , 'Value'); ? ?h = get(handles.Freq16K , 'Value'); ? ?handles.Freq4Knum.String = num2str( f*100 ); ? ?all = get(handles.audiovoice , 'Value'); ? ?handles.now_audio = all*( a*handles.audio_100 + b*handles.audio_200 + c*handles.audio_500 + d*handles.audio_1K + e*handles.audio_2K + f*handles.audio_4K + g*handles.audio_8K + h*handles.audio_16K ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff );endguidata(hObject, handles);% Hints: get(hObject,'Value') returns position of slider% ? ? ? ?get(hObject,'Min') and get(hObject,'Max') to determine range of slider% --- Executes during object creation, after setting all properties.function Freq4K_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq4K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes on slider movement.function Freq8K_Callback(hObject, eventdata, handles)% hObject ? ?handle to Freq8K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?a = get(handles.Freq100 , 'Value'); ? ?b = get(handles.Freq200 , 'Value'); ? ?c = get(handles.Freq500 , 'Value'); ? ?d = get(handles.Freq1K , 'Value'); ? ?e = get(handles.Freq2K , 'Value'); ? ?f = get(handles.Freq4K , 'Value'); ? ?g = get(handles.Freq8K , 'Value'); ? ?h = get(handles.Freq16K , 'Value'); ? ?handles.Freq8Knum.String = num2str( g*100 ); ? ?all = get(handles.audiovoice , 'Value'); ? ?handles.now_audio = all*( a*handles.audio_100 + b*handles.audio_200 + c*handles.audio_500 + d*handles.audio_1K + e*handles.audio_2K + f*handles.audio_4K + g*handles.audio_8K + h*handles.audio_16K ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff );endguidata(hObject, handles);% Hints: get(hObject,'Value') returns position of slider% ? ? ? ?get(hObject,'Min') and get(hObject,'Max') to determine range of slider% --- Executes during object creation, after setting all properties.function Freq8K_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq8K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes on slider movement.function Freq16K_Callback(hObject, eventdata, handles)% hObject ? ?handle to Freq16K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?a = get(handles.Freq100 , 'Value'); ? ?b = get(handles.Freq200 , 'Value'); ? ?c = get(handles.Freq500 , 'Value'); ? ?d = get(handles.Freq1K , 'Value'); ? ?e = get(handles.Freq2K , 'Value'); ? ?f = get(handles.Freq4K , 'Value'); ? ?g = get(handles.Freq8K , 'Value'); ? ?h = get(handles.Freq16K , 'Value'); ? ?handles.Freq16Knum.String = num2str( h*100 ); ? ?all = get(handles.audiovoice , 'Value'); ? ?handles.now_audio = all*( a*handles.audio_100 + b*handles.audio_200 + c*handles.audio_500 + d*handles.audio_1K + e*handles.audio_2K + f*handles.audio_4K + g*handles.audio_8K + h*handles.audio_16K ); ? ?Audio_ff = abs( fft( handles.now_audio ) ); ? ?plot( handles.audio_end , Audio_ff );endguidata(hObject, handles);% Hints: get(hObject,'Value') returns position of slider% ? ? ? ?get(hObject,'Min') and get(hObject,'Max') to determine range of slider% --- Executes during object creation, after setting all properties.function Freq16K_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Freq16K (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: slider controls usually have a light gray background.if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor',[.9 .9 .9]);end% --- Executes during object creation, after setting all properties.function figure1_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to figure1 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% --- Executes on button press in play.function play_Callback(hObject, eventdata, handles)% hObject ? ?handle to play (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)try ? ?sound( handles.now_audio , handles.audioFs );endguidata(hObject, handles);

3 仿真結(jié)果

4 參考文獻(xiàn)

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