Creating a Tachometric Signal

This section helps to create a tachometric signal from the order detection.

To Create a Tachometric Signal:

Prerequisites: You need a time-frequency representation.
  1. Adjust the window size of the time frequency representation.
  2. In the toolbar, click Detect harmonics .
  3. In the representation, click several points on one harmonic from the start of the signal (0 second) to the end of the signal.
  4. Right-click the representation then choose Use fundamental as rpm signal.
  5. In the View menu, choose Display tachometer.

    The tachometer is displayed.

  6. From the Playback Bar click Play synthesized sound .

    During playback, the RPM is varying in the tachometer.

  7. In the File menu, choose Save signal as time-domain signal.

The tachometric signal is created and saved into the WAV file as a new channel, along with the sound signal.

Tip: You can open the created signal and display the RPM profile.