I’ve just found a picture on my cell phone and I asked me what it shows. Then I’ve remembered the place where I took it. It was on the 15th International Trade Fair for Sensorics, Measuring and Testing Technologies on 6th May in Nürnberg.

The Mathworks gave a speech about “Live Data Analysis using Matlab”.

Amongst others I learnt how to grab signals from a sound card. The code looks like that:

ai=analoginput('winsound');
addChannel(ai,1);
start(ai)
[time,data]=getdata(ai);
plot(time, data);
stop(ai), delete(ai), clear ai

After the speech I asked the lecturer how to write my own toolbox. It’s quite simple. You only need to write your functions in m-files and design your graphical user interface (GUI) in GUIDE. That’s it.