Error using fgen Too many input arguments.

Question

Jason Calabro 2017-4-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335397-error-using-fgen-too-many-input-arguments

关闭： MATLAB Answer Bot 2021-8-20

For a project I was given the following code to start with but I am getting this message: "Error using fgen Too many input arguments."

%EDELWE1 This is the main program that creates the digitized
%       sound for the first seven notes of the song "Edelweiss" 
%        
%       First we set the frequency of each note (in the scale
%       ranging from Ab to Gs, where 'b' stands for Flat and 
%       's' stands for Sharp). Then we mark the beginning and 
%       end of each note. Next, the function FGEN is called
%       to generate a Sinewave of appropriate frequency and
%       duration. Also. a little "rest", i.e., silence,
%       is provided between a pair of successive notes
%       in order to make them stand apart.
% Define frequencies corresponding to different notes 
s=2^(1/12);
a=220;
ab=a/s;
as=a*s;
b=as*s;
c=b*s;
cs=c*s;
d=cs*s;
ds=d*s;
e=ds*s;
f=e*s;
fs=f*s;
g=fs*s;
gs=g*s;
eH=2*e;  % eH = one octave higher note of "E"
csH=2*cs;  % csH = one octave higher note of "C sharp"
dsH=2*ds;
% define sampling rate and note durations
dt=1/8000;  % dt = sampling interval
%rest=0.1;
rest=0.2;   % rest = a period of silence between two notes 
t4=1.0;     % t4 = duration of a quarter note.
t8=t4/2;
t2=t4*2;
% create the digitized musical score
z=[];    % z = vector that stores sampled musical score
ti=0;     % ti = time when the first note starts
tf=ti+t4; % tf = time when the first note ends
y=fgen(e,ti,tf); % y = sampled data representing note "e"
z=[z;y];   % Store y into vector z
ti=tf+dt;  % ti = time when pause begins
tf=ti+rest;  % tf = time when pause ends
y=fgen(0,ti,tf); % sets y = 0
z=[z;y];   % stores y into vector z
ti=tf+dt;  % ti = time when the second note begins
tf=ti+t8;  % tf = time when the second note ends
y=fgen(g,ti,tf);  % y = sampled data representing note "g" 
z=[z;y];   % store y into vector z
ti=tf+dt;  % follow a similar procedure from here
tf=ti+(rest/4);
y=fgen(0,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+t4;
y=fgen(dsH,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+t8;
y=fgen(0,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+t4;
y=fgen(csH,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+rest;
y=fgen(0,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+t8;
y=fgen(g,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+rest;
y=fgen(0,ti,tf);
z=[z;y];
ti=tf+dt;
tf=ti+t4;
y=fgen(f,ti,tf);
z=[z;y];
% play it using MATLAB's sound function
Fs=1/dt;   % Fs = sampling rate
soundsc(z,Fs)  % sound function plays the musical score
% FGEN  This is the function generator routine 
%   that is called by EDELWEISS to generate 
%  sinewaves of different frequencies 
%   and varying durations
function y=fgen(f,ti,tf)
dt=1/8000;
t=[ti:dt:tf]';
y=sin(2*pi*f.*t);

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Rik 2017-4-14

Have a read here and here. It will greatly improve your chances of getting an answer.

此问题已关闭。

Answer 1

Ankitha Kollegal Arjun 2017-4-17

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335397-error-using-fgen-too-many-input-arguments#answer_263257

The custom function name might be causing the issue.

There is a MATLAB in-built function by the name 'fgen', and your code also defines a function having the same name. Try renaming your custom function.