I cant work out whick way to structure this code. Multiple functions with multiple inputs/outputs

Question

Gary 2015-2-16

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评论： Star Strider 2015-2-16

function [ fs, f0, d, t, y, call ] = CallingFunction()
%UNTITLED2 Summary of this function goes here
%   Detailed explanation goes here
end
function [ f0,fs,d ] = Funktion1 (  )
% This function reads in Duration, Fundamental & Sample frequencies
%   Accepts inputs
f0 = input('Enter the Fundamental frequency, :');
fs = input('Enter the Sample frequency, :');
d = input('Enter the Duration, :');
end
function [ t, y ] = Funktion2( f0 , fs , d )
%UNTITLED4 Summary of this function goes here
%   Creates Time vector & Sinusoid vector
t=0:1/fs:d; 
y1=sin(2*pi*f0*t); 
y2=sin(2*pi*2*f0*t); 
y3=sin(2*pi*3*f0*t); 
y=y1+y2+y3;
end
function [  ] = Funktion3( fs , t , y )
%%Plot & play results
% Read in decay parameters
K = input('Value of K; :');
%%Create exp decay fn 
A=(K*exp(-1.5*t)).*sin(2*pi*0.65*t); 
call=A.*y; 
%%Play through sound card & plot 
soundsc(call,fs) 
plot(t,call) 
end

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Answer 1

Star Strider 2015-2-16

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编辑：Star Strider 2015-2-16

在 MATLAB Online 中打开

Just guessing here, because I’m not certain what you’re doing.

Perhaps this will do what you want:

function [ fs, f0, d, t, y, call ] = CallingFunction()
%UNTITLED2 Summary of this function goes here
%   Detailed explanation goes here
[ f0,fs,d ] = Funktion1;
[ t, y ] = Funktion2( f0 , fs , d );
Funktion3( fs , t , y );
end

Also, define whatever you want your ‘call’ variable to be, somewhere in ‘CallingFunction’. If you don’t, it will throw an error that ‘call’ is unassigned.

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Star Strider 2015-2-16

You most likely need to suggest a range of sample rates and check to be certain the sample rate is correct. See the documentation for soundsc for details.

The sample rate (sampling frequency) needs to be at least twice the highest frequency of the signal.