How do I write this chua oscillator to an audio file in matlab?

[matlab audio]

TL;DR Summary

writing chua oscillator to an audio file using matlab

hello i would like to ask how to write the solution of this matlab program to an audio file using the audio tool box or any other technique. thanks very much.
function chua_oscillator %This program is computed by S.Sabarathinam %Based on: Nonlinear Dynamics: Integrability, Chaos and Patterns,by M Lakshmanan, S Rajaseekar % to see the period doubling change the value of "r" clear all figure(1) r=1920.0; ga = -0.758d-03; gb = -0.409d-03; c1 = 10.0d-09; c2 = 100.0d-09; bind = 20.0d-03; a = r*ga; b = r*gb; alpha = c2/c1; beta=(c2*r*r)/bind; %time step and initial condition tspan = 0:0.01:500; x10 = 0.11; x20 = 0.2; x30 = -0.3; y0 = [x10; x20; x30]; [t,y] = ode45(@(t,x) f(t,x,a,b,alpha,beta),tspan,y0); x1=y(:,1); x2=y(:,2); x3=y(:,3); %plot the variable x and y plot(x1,x2) function dy = f(t,y,a,b,alpha,beta) x1 = y(1); x2 = y(2); x3 = y(3); hx=b*x1 + 0.5d0*(a-b)*(abs(x1+1.0)-abs(x1-1.0)); dx1=alpha*(x2-x1-hx); dx2=x1-x2+x3; dx3=-beta*x2; dy = [dx1; dx2; dx3];
https://www.mathworks.com/matlabcen...ads/submissions/44972/versions/1/download/zip
https://www.mathworks.com/help/audio/index.html?s_tid=srchtitle_audio_1

 

[berkeman]

Welcome to PF.

I didn't click on the ZIP file, but are you asking how to take the output of a MATLAB model of the circuit and write a *.wav file that you can play? Or are you asking something else.

Does the MATLAB model of the circuit use the differential equations mentioned in this Wikipedia article?

https://en.wikipedia.org/wiki/Chua's_circuit

 

[matlab audio]

thanks for your response. yes that is my question. i edited my original post to include the code.

 

[berkeman]

Have you worked with *.wav files before? I've only worked with them a little, to process digitized audio data that was acquired at 44.1kHz. I think at the least you will want to adjust your sample rate in your code to match one of the standard *.wav sample frequencies. Maybe the audio toolbox helps you to create the header for your *.wav file that your MATLAB code will be calculating the data for...

https://ccrma.stanford.edu/courses/422-winter-2014/projects/WaveFormat/

 

[matlab audio]

thanks a lot for your help.

 

[DrGreg]

From https://www.mathworks.com/help/matlab/ref/audiowrite.html :

audiowrite(filename,y,Fs) writes a matrix of audio data, y, with sample rate Fs to a file called filename.​

For WAV files, there are no restrictions on the value of Fs that you write to the file, though a non-standard value might not be playable depending on what you use to play it.