THD+N calculation

I'd like to know how to calculate THD+N from a wav or csv file and I could not find one so far. Please help.

[Mathieu NOE]

seems the function already exist

https://fr.mathworks.com/help/signal/ref/thd.html

Answer 1

[Aghamarsh Varanasi]

Hi Willaim Jia,

The calculation of Total Harmonic Distortion and noise (THD + N) of a signal is explained in this example. This requires the “Audio Toolbox” to be installed in MATLAB.

You can quickly open this example from MATLAB using the following command.

>> openExample('audio/THDNMeasurementWithTonetrackingExample') 

For giving input from a wav file, you can use a ‘From Multimedia’ block.