Real-time DAQ and sound card visualization

Read analog signal coming from a daq or a sound card. Display the data in real-time or at the end.

Description

 Matlab code to read analog signal coming from a daq or from your sound card. This code allows to display the data in real-time or when the acquisition finished.
The real-time visualization method is better for monitoring.
The non real-time visualization method is better for accurate acquisitions.
It is an easy way to monitor or record your data coming from a daq or your sound card. I tried to write the simpler and the more general code possible. There is only one script file with a lot of comments to understand each step.
You can change many parameters like the duration, the number of channels or the type of daq easily.
The variable 'real_time_vis' can be changed to have a real time visualization of your data or not.

Nizar Ouarti 11-2009, France

• Required Products: Data Acquisition Toolbox
• MATLAB release: MATLAB 7.1.0 (R14SP3)

[Sen]

% Error occurs using winsound:

??? Function 'isrunning' is not defined for values of class 'analoginput'.

Error in ==> Soundcard at 41
    while isrunning(ai) % while ai is running