实现滤波器的自己设计，功能和自带的fdatoolmatlab源码程序 - matlab通信信号

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标题：实现滤波器的自己设计，功能和自带的fdatoolmatlab源码程序
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所属分类: 通信信号资源类型：程序源码文件大小: 10.46 KB 上传时间: 2019-06-16 22:04:48 下载次数: 77 资源积分：1分提供者: zhangsan456 code

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实现滤波器的自己设计，功能和自带的fdatoolmatlab源码程序

function varargout = lowpass(varargin)

% LOWPASS M-file for lowpass.fig

% LOWPASS, by itself, creates a new LOWPASS or raises the existing

% singleton*.

% H = LOWPASS returns the handle to a new LOWPASS or the handle to

% the existing singleton*.

% LOWPASS('CALLBACK',h ,eventData,handles,...) calls the local

% function named CALLBACK in LOWPASS.M with the given input arguments.

% LOWPASS('Property','Value',...) creates a new LOWPASS or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before lowpass_OpeningFunction gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to lowpass_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 lowpass

% Last Modified by GUIDE v2.5 23-Nov-2006 17:24:09

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @lowpass_OpeningFcn, ...

'gui_OutputFcn', @lowpass_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 lowpass is made visible.

function lowpass_OpeningFcn(h , eventdata, handles, varargin)

% This function has no output args, see OutputFcn.

% h 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 lowpass (see VARARGIN)

% Choose default command line output for lowpass

handles.output = h ;

% Update handles structure

guidata(h , handles);

% UIWAIT makes lowpass wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = lowpass_OutputFcn(h , eventdata, handles)

% varargout cell array for returning output args (see VARARGOUT);

% h 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 creation, after setting all properties.

function Hr_rp_CreateFcn(h , eventdata, handles)

% h handle to Hr_rp (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rp_Callback(h , eventdata, handles)

% h handle to Hr_rp (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rp as text

% str2double(get(h ,'String')) returns contents of Hr_rp as a double

% --- Executes during creation, after setting all properties.

function Hr_rs_CreateFcn(h , eventdata, handles)

% h handle to Hr_rs (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rs_Callback(h , eventdata, handles)

% h handle to Hr_rs (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rs as text

% str2double(get(h ,'String')) returns contents of Hr_rs as a double

% --- Executes during creation, after setting all properties.

function Hw_wp_CreateFcn(h , eventdata, handles)

% h handle to Hw_wp (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hw_wp_Callback(h , eventdata, handles)

% h handle to Hw_wp (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hw_wp as text

% str2double(get(h ,'String')) returns contents of Hw_wp as a double

% --- Executes during creation, after setting all properties.

function Hw_ws_CreateFcn(h , eventdata, handles)

% h handle to Hw_ws (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hw_ws_Callback(h , eventdata, handles)

% h handle to Hw_ws (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hw_ws as text

% str2double(get(h ,'String')) returns contents of Hw_ws as a double

% --- Executes on button press in Hd_design.

function Hd_design_Callback(h , eventdata, handles)

% h handle to Hd_design (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

fs=str2double(get(handles.Hf_fs,'String'));

rp = str2double(get(handles.Hr_rp,'String'));

rs = str2double(get(handles.Hr_rs,'String'));

ws = str2double(get(handles.Hw_ws,'String'));

wp = str2double(get(handles.Hw_wp,'String'));

as = str2double(get(handles.Hr_rstop1,'String'));

ap = str2double(get(handles.Hr_rpass,'String'));

as2 = str2double(get(handles.Hr_rstop2,'String'));

if get(handles.radio_fir,'Value')==1

[type]=selecttype(get(handles.Hl_low,'Value'),get(handles.Hh_high,'Value'),get(handles.Hb_bandpass,'Value'),get(handles.Hb_bandstop,'Value'));

[b,a,n]=fir_filter(fs,wp,ws,rp,rs,as,ap,type);

else

[type]=selecttype(get(handles.Hl_low,'Value'),get(handles.Hh_high,'Value'),get(handles.Hb_bandpass,'Value'),get(handles.Hb_bandstop,'Value'));

[b,a,n]=iir_filter(fs,wp,ws,rp,rs,as,ap,type,get(handles.popupmenu2,'Value'));

end

[H,W]=freqz(b,a);

handles.metricdata.b = b;

guidata(h ,handles)

handles.metricdata.a = a;

guidata(h ,handles)

axes(handles.Ha_axes1);

plot(W/pi,20*log10(abs(H)));grid on;

figure;freqz(b,a);

% fvtool(b,a);

% --- Executes during creation, after setting all properties.

function [type]=selecttype(type1,type2,type3,type4)

if type1==1

type=1;

elseif type2==1

type=2;

elseif type3==1

type=3;

else

type=4;

end

%-----------------------------------------------------------------

function [b,a,n]=fir_filter(fs,wp,ws,rp,rs,as,ap,type)

N1=abs(ceil(8*pi/(ws/fs-wp/fs)));

N2=abs(ceil(8*pi/(wp/fs-rp/fs)));

N3=abs(ceil(8*pi/(wp/fs-ws/fs)));

N4=abs(ceil(8*pi/(rp/fs-wp/fs)));

wnl=(ws+wp)/fs/2;

wnb=(wp+rp)/fs/2;

wns=(ws+rs)/fs/2;

a=1;

if type==1

n=N1; b=fir1(n,wnl);

elseif type==2

n=N3; b=fir1(n,wnl,'high');

elseif type==3

n=N2; b=fir1(n,[wnb wns],'bandpass');

else

n=N4; b=fir1(n,[wnb wns],'stop');

end

%-----------------------------------------------------------------

function [b,a,n]=iir_filter(fs,wp,ws,rp,rs,as,ap,type,point)

if type==1

[b,a,n]=lowfilter(fs,wp,ws,rp,rs,point);

elseif type==2

[b,a,n]=highfilter(fs,wp,ws,rp,rs,point);

elseif type==3

[b,a,n]=bandpassfilter(fs,wp,ws,rp,rs,as,ap,point);

else

[b,a,n]=bandstopfilter(fs,wp,ws,rp,rs,as,ap,point);

end

%-----------------------------------------------------------------

function [b,a,n]=lowfilter(fs,wp,ws,rp,rs,point)

lowpass_sel_index = point;

switch lowpass_sel_index

case 1

[n,wn]=buttord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=butter(n,wn);

case 2

[n,wn]=cheb1ord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=cheby1(n,rp,wn);

case 3

[n,wn]=cheb2ord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=cheby2(n,rp,wn);

case 4

[n,wn]=ellipord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=ellip(n,rp,rs,wn);

end

%-----------------------------------------------------------------

function [b,a,n]=highfilter(fs,wp,ws,rp,rs,point)

lowpass_sel_index = point;

switch lowpass_sel_index

case 1

[n,wn]=buttord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=butter(n,wn,'high');

case 2

[n,wn]=cheb1ord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=cheby1(n,rp,wn,'high');

case 3

[n,wn]=cheb2ord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=cheby2(n,rp,wn,'high');

case 4

[n,wn]=ellipord(wp/fs/2,ws/fs/2,rp,rs);

[b,a]=ellip(n,rp,rs,wn,'high');

end

%-----------------------------------------------------------------

function [b,a,n]=bandpassfilter(fs,wp,ws,rp,rs,as,ap,point)

lowpass_sel_index = point;

switch lowpass_sel_index

case 1

[n,wn]=buttord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=butter(n,wn);

case 2

[n,wn]=cheb1ord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=cheby1(n,ap,wn);

case 3

[n,wn]=cheb2ord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=cheby2(n,ap,wn);

case 4

[n,wn]=ellipord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=ellip(n,ap,as,wn);

end

%-----------------------------------------------------------------

function [b,a,n]=bandstopfilter(fs,wp,ws,rp,rs,as,ap,point)

lowpass_sel_index = point;

switch lowpass_sel_index

case 1

[n,wn]=buttord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=butter(n,wn,'stop');

case 2

[n,wn]=cheb1ord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=cheby1(n,ap,wn,'stop');

case 3

[n,wn]=cheb2ord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=cheby2(n,ap,wn,'stop');

case 4

[n,wn]=ellipord([wp/fs/2 ws/fs/2],[rp/fs/2,rs/fs/2],ap,as);

[b,a]=ellip(n,ap,as,wn,'stop');

end

function Hf_fs_CreateFcn(h , eventdata, handles)

% h handle to Hf_fs (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hf_fs_Callback(h , eventdata, handles)

% h handle to Hf_fs (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hf_fs as text

% str2double(get(h ,'String')) returns contents of Hf_fs as a double

fs=str2double(get(handles.Hf_fs,'String'));

% --- Executes during creation, after setting all properties.

function Hp_popup_CreateFcn(h , eventdata, handles)

% h 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(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

set(h ,'string',{'Butterworth','Chebyshev_type1','Chebyshev_type2','Eliptic'});

% --- Executes on selection change in popupmenu2.

function Hp_popup_Callback(h , eventdata, handles)

% h handle to popupmenu2 (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(h ,'String') returns popupmenu2 contents as cell array

% contents{get(h ,'Value')} returns selected item from popupmenu2

% --- Executes on button press in Hl_low.

function Hl_low_Callback(h , eventdata, handles)

% h handle to Hl_low (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of Hl_low

set(handles.Hl_low, 'Value', 1);

set(handles.Hh_high, 'Value', 0);

set(handles.Hb_bandpass, 'Value', 0);

set(handles.Hb_bandstop, 'Value', 0);

set(handles.Hr_rstop1, 'Visible', 'off');

set(handles.Hr_rpass, 'Visible', 'off');

set(handles.Hr_rstop2, 'Visible', 'off');

set(handles.text23, 'Visible', 'off');

set(handles.text24, 'Visible', 'off');

set(handles.text25, 'Visible', 'off');

set(handles.text5, 'String', 'wp');

set(handles.text6, 'String', 'ws');

set(handles.text3, 'String', 'rp');

set(handles.text4, 'String', 'rs');

% --- Executes on button press in Hh_high.

function Hh_high_Callback(h , eventdata, handles)

% h handle to Hh_high (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of Hh_high

set(handles.Hl_low, 'Value', 0);

set(handles.Hh_high, 'Value', 1);

set(handles.Hb_bandpass, 'Value', 0);

set(handles.Hb_bandstop, 'Value', 0);

set(handles.Hr_rstop1, 'Visible', 'off');

set(handles.Hr_rpass, 'Visible', 'off');

set(handles.Hr_rstop2, 'Visible', 'off');

set(handles.text23, 'Visible', 'off');

set(handles.text24, 'Visible', 'off');

set(handles.text25, 'Visible', 'off');

set(handles.text5, 'String', 'wp');

set(handles.text6, 'String', 'ws');

set(handles.text3, 'String', 'rp');

set(handles.text4, 'String', 'rs');

% --- Executes on button press in Hb_bandpass.

function Hb_bandpass_Callback(h , eventdata, handles)

% h handle to Hb_bandpass (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of Hb_bandpass

set(handles.Hl_low, 'Value', 0);

set(handles.Hh_high, 'Value', 0);

set(handles.Hb_bandpass, 'Value', 1);

set(handles.Hb_bandstop, 'Value', 0);

set(handles.text5, 'String', 'Fpass1');

set(handles.text6, 'String', 'Fpass2');

set(handles.text3, 'String', 'Fstop1');

set(handles.text4, 'String', 'Fstop2');

set(handles.Hr_rstop1, 'Visible', 'on');

set(handles.Hr_rpass, 'Visible', 'on');

set(handles.Hr_rstop2, 'Visible', 'on');

set(handles.text23, 'Visible', 'on');

set(handles.text24, 'Visible', 'on');

set(handles.text25, 'Visible', 'on');

set(handles.text23, 'String', 'Rstop1');

set(handles.text24, 'String', 'Rpass');

set(handles.text25, 'String', 'Rstop2');

% --- Executes on button press in Hb_bandstop.

function Hb_bandstop_Callback(h , eventdata, handles)

% h handle to Hb_bandstop (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of Hb_bandstop

set(handles.Hl_low, 'Value', 0);

set(handles.Hh_high, 'Value', 0);

set(handles.Hb_bandpass, 'Value', 0);

set(handles.Hb_bandstop, 'Value', 1);

set(handles.text5, 'String', 'Fpass1');

set(handles.text6, 'String', 'Fpass2');

set(handles.text3, 'String', 'Fstop1');

set(handles.text4, 'String', 'Fstop2');

set(handles.text23, 'String', 'Rpass1');

set(handles.text24, 'String', 'Rstop');

set(handles.text25, 'String', 'Rpass2');

set(handles.Hr_rstop1, 'Visible', 'on');

set(handles.Hr_rpass, 'Visible', 'on');

set(handles.Hr_rstop2, 'Visible', 'on');

set(handles.text23, 'Visible', 'on');

set(handles.text24, 'Visible', 'on');

set(handles.text25, 'Visible', 'on');

% --- Executes during creation, after setting all properties.

function Hf_fs1_CreateFcn(h , eventdata, handles)

% h handle to Hf_fs1 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hf_fs1_Callback(h , eventdata, handles)

% h handle to Hf_fs1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hf_fs1 as text

% str2double(get(h ,'String')) returns contents of Hf_fs1 as a double

% --- Executes during creation, after setting all properties.

function Hp_pass1_CreateFcn(h , eventdata, handles)

% h handle to Hp_pass1 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hp_pass1_Callback(h , eventdata, handles)

% h handle to Hp_pass1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hp_pass1 as text

% str2double(get(h ,'String')) returns contents of Hp_pass1 as a double

% --- Executes during creation, after setting all properties.

function Hf_fpass2_CreateFcn(h , eventdata, handles)

% h handle to Hf_fpass2 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hf_fpass2_Callback(h , eventdata, handles)

% h handle to Hf_fpass2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hf_fpass2 as text

% str2double(get(h ,'String')) returns contents of Hf_fpass2 as a double

% --- Executes during creation, after setting all properties.

function Hf_stop_CreateFcn(h , eventdata, handles)

% h handle to Hf_stop (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hf_stop_Callback(h , eventdata, handles)

% h handle to Hf_stop (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hf_stop as text

% str2double(get(h ,'String')) returns contents of Hf_stop as a double

% --- Executes during creation, after setting all properties.

function Hf_rp1_CreateFcn(h , eventdata, handles)

% h handle to Hf_rp1 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hf_rp1_Callback(h , eventdata, handles)

% h handle to Hf_rp1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hf_rp1 as text

% str2double(get(h ,'String')) returns contents of Hf_rp1 as a double

% --- Executes during creation, after setting all properties.

function Hr_rp2_CreateFcn(h , eventdata, handles)

% h handle to Hr_rp2 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rp2_Callback(h , eventdata, handles)

% h handle to Hr_rp2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rp2 as text

% str2double(get(h ,'String')) returns contents of Hr_rp2 as a double

% --- Executes during creation, after setting all properties.

function Hr_rs1_CreateFcn(h , eventdata, handles)

% h handle to Hr_rs1 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rs1_Callback(h , eventdata, handles)

% h handle to Hr_rs1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rs1 as text

% str2double(get(h ,'String')) returns contents of Hr_rs1 as a double

% --- Executes during creation, after setting all properties.

function popupmenu2_CreateFcn(h , eventdata, handles)

% h 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(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

set(h , 'String', { 'Butterworth', 'Chebyshev Type1', 'Chebyshev Type2','Ellipic'});

% --- Executes on selection change in popupmenu2.

function popupmenu2_Callback(h , eventdata, handles)

% h handle to popupmenu2 (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(h ,'String') returns popupmenu2 contents as cell array

% contents{get(h ,'Value')} returns selected item from popupmenu2

% --- Executes during creation, after setting all properties.

function popupmenu3_CreateFcn(h , eventdata, handles)

% h 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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

set(h , 'String', { 'Hamming', 'Hann', 'Kaiser','Triangular','Blackman','Gaussian','Chebyshev'});

% --- Executes on selection change in popupmenu3.

function popupmenu3_Callback(h , eventdata, handles)

% h 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(h ,'String') returns popupmenu3 contents as cell array

% contents{get(h ,'Value')} returns selected item from popupmenu3

% --- Executes on button press in radio_sporder.

function radio_sporder_Callback(h , eventdata, handles)

% h handle to radio_sporder (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

set(handles.radio_sporder, 'Value', 1);

set(handles.radio_Minorder, 'Value', 0);

% Hint: get(h ,'Value') returns toggle state of radio_sporder

% --- Executes on button press in Hr_radio16.

function Hr_radio16_Callback(h , eventdata, handles)

% h handle to Hr_radio16 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of Hr_radio16

% --- Executes during creation, after setting all properties.

function Ho_order_CreateFcn(h , eventdata, handles)

% h handle to Ho_order (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Ho_order_Callback(h , eventdata, handles)

% h handle to Ho_order (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Ho_order as text

% str2double(get(h ,'String')) returns contents of Ho_order as a double

% --- Executes during creation, after setting all properties.

function Hr_rstop1_CreateFcn(h , eventdata, handles)

% h handle to Hr_rstop1 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rstop1_Callback(h , eventdata, handles)

% h handle to Hr_rstop1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rstop1 as text

% str2double(get(h ,'String')) returns contents of Hr_rstop1 as a double

% --- Executes during creation, after setting all properties.

function Hr_rpass_CreateFcn(h , eventdata, handles)

% h handle to Hr_rpass (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rpass_Callback(h , eventdata, handles)

% h handle to Hr_rpass (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rpass as text

% str2double(get(h ,'String')) returns contents of Hr_rpass as a double

% --- Executes during creation, after setting all properties.

function Hr_rstop2_CreateFcn(h , eventdata, handles)

% h handle to Hr_rstop2 (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

set(h ,'BackgroundColor','white');

else

set(h ,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));

end

function Hr_rstop2_Callback(h , eventdata, handles)

% h handle to Hr_rstop2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: get(h ,'String') returns contents of Hr_rstop2 as text

% str2double(get(h ,'String')) returns contents of Hr_rstop2 as a double

% --- Executes on button press in radio_iir.

function radio_iir_Callback(h , eventdata, handles)

% h handle to radio_iir (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of radio_iir

set(handles.radio_iir, 'Value', 1);

set(handles.radio_fir, 'Value', 0);

% --- Executes on button press in radio_fir.

function radio_fir_Callback(h , eventdata, handles)

% h handle to radio_fir (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(h ,'Value') returns toggle state of radio_fir

set(handles.radio_iir, 'Value', 0);

set(handles.radio_fir, 'Value', 1);

% --- Executes on button press in Hc_close.

function Hc_close_Callback(h , eventdata, handles)

% h handle to Hc_close (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 radio_Minorder.

function radio_Minorder_Callback(h , eventdata, handles)

% h handle to radio_Minorder (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

set(handles.radio_sporder, 'Value', 0);

set(handles.radio_Minorder, 'Value', 1);

% Hint: get(h ,'Value') returns toggle state of radio_Minorder

% --- Executes on button press in pushbutton_open.

function pushbutton_open_Callback(h , eventdata, handles)

% h handle to pushbutton_open (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

[fname,pname]=uigetfile('*.wav');

[before,FSs,bits]=wavread(fname);

% set(handles.Ho_order, 'String', fname);

handles.metricdata.before = before;

guidata(h ,handles);

handles.metricdata.FSs = FSs;

guidata(h ,handles)

handles.metricdata.bits = bits;

guidata(h ,handles)

% set(handles.fs, 'Value', FSs);

% --- Executes on button press in pushbutton_sound.

function pushbutton_sound_Callback(h , eventdata, handles)

% h handle to pushbutton_sound (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% set(handles.Hf_fs, 'String',FSs);

if get(handles.radio_Minorder,'Value')==1

sound(handles.metricdata.before,handles.metricdata.FSs,handles.metricdata.bits);

else get(handles.radio_Minorder,'Value')==1

sound(handles.metricdata.after,handles.metricdata.FSs,handles.metricdata.bits);

end

% --- Executes on button press in pushbutton_show.

function pushbutton_show_Callback(h , eventdata, handles)

% h handle to pushbutton_show (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

lg=length(handles.metricdata.before);

lgs=[0:lg-1];

befores=fft(handles.metricdata.before);

if get(handles.radio_fir,'Value')==1

after=fftfilt(handles.metricdata.b,handles.metricdata.before);

else after=filter(handles.metricdata.b,handles.metricdata.a,handles.metricdata.before);

end

afters=fft(after);

figure;subplot(2,2,1);plot(handles.metricdata.before);

subplot(2,2,2);plot(after);

subplot(2,2,3);stem(lgs,befores);

subplot(2,2,4);stem(lgs,afters);

handles.metricdata.after = after;

guidata(h ,handles)

% --- Executes on mouse press over figure background.

function figure1_ButtonDownFcn(h , eventdata, handles)

% h handle to figure1 (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 pushbutton_filter.

function pushbutton_filter_Callback(h , eventdata, handles)

% h handle to pushbutton_filter (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

文件列表（点击上边下载按钮，如果是垃圾文件请在下面评价差评或者投诉）:

lowpass.fig
lowpass.m

关键词：滤波器

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关键词：滤波器