Tutorials > Basic tutorials > Simple measurement

Click the Recorder button in the upper section. The Settings will start to acquire the data. We can now test how the microphone works by making some sounds. We can use the plus or minus button on the lower right side of the display to zoom in or out of the time axis.

First measurement

To see the data at the faster rate, switch to the Scope screen . On the trigger tab, select the Norm trigger and drag level L1 with mouse to about 10 % of the full range. One can now tap on the microphone to create trigger shots. It will be nicely distinguishable how different sounds create different patterns.

Scope screen

Next the FFT screen can be used to perform the frequency analysis. A nice line resolution and logarithmic scale is helpful to better see the harmonics (in the screen shot below there are 4096 lines to have approximately 1 Hz between each frequency line).

Here you can try to sing your best A tone (A3 has a frequency of 220 Hz, A2 has a frequency of 110 Hz) or, if you have a piano or any other musical instrument is available, one can see how well it is tuned. It is also nice to see the difference between a whistle, singing and a musical instrument. Actually, the higher harmonics give the color of the tones of music.

FFT screen

Now you can go back to the recorder and see that all the data is still there. You can zoom out and observe the full period of time you someone have played with the microphone.

The next step is to store some data. Click the Store button and the red light on the "store" button should appear. The upper right corner should display the size of stored analog data and the video file size.