Recently I encouter a problem about Multimedia product audio line in test.
The multimedia product play out a step sweep signal from 100HZ to 10KHZ(10 steps,every step duration time is 200ms), my question is how to analyze this kind of signal using SVT? I want to caculate the every step frequency amplitude,frequency accuracy and THD.
Acquire the signal. Process each 200 ms frequency step as a separate block of data.
For the analysis, you can use the single-tone measurements VIs found in
Functions>>Sound and Vibration>>Single Tone Measurements
Functions>>Sound and Vibration>>Distortion
For frequency accuracy, are you looking to quantify the difference between the detected tone frequency and the expected tone frequency? Or are you trying to make a measurement of small frequency variations within each 200 ms window?