Analysis

After the measurements have been performed, it is time to analyze them. Move to the Analyze tab in ACME.

FFT settings

Open the FFT settings menu and use the following settings:

1. FFT length: 48000
2. Window: Hann
3. Overlap: 90%

If the overlap cannot be set, the most likely cause is that the Measue tab is active instead of the Analyze tab,

Compute settings

µZ tool

Select the µZ tool.

The other tools like Sound Level Meter - time dependent and Power Spectra work on the measurements as well, but access the raw microphone data instead. They can be useful for trouble shooting and are normally not required when using the impedance tube.

Output quantity

Further settings depend on the output quantity and are described on page Output quantity.

Message box

The message box near the bottom shows information about the calibration tied to the selected measurement. It also warns if a measurements cannot be plotted.