Need plugin for measuring THD, THD+N and SNR ratio of a system

Hi All,

I am new to Nyquist.
I need to measure THD, THD+N and SNR ratio of system.

Please provide the details if already any plugins are available in archive.

If you are interested in “comparative” measurements (comparing one piece of equipment with another), then this topic may help:

If you want absolute (calibrated) measurements, then you may need proper test equipment.
If you want to attempt making your own test equipment, there is some information here that may be useful:


What’s the system? If it’s analog audio, getting into and out of the computer will contribute a major part of the distortion and noise even before you run the tests.