Could you tell me the principle of these vibrations, what they depend on

Thanks so much !!!

As shown on the picture, it is a goofy audio analyzer that analyzes nothing as shows no vertical nor horizontal scales.

 

It is supposed to tell the frequencies and the signal level on each, plus peaks reached.

Could you tell me the principle of these vibrations, what they depend on

Thanks so much !!!

The photograph you have provided shows a bar graph. Each bar corresponds to a representative frequency in a given frequency range. The height of the bar usually represents the decible level of the sound of the signals in that frequency range.

 

Pete

The little white line shows the highest peak, in each frequency range, in the previous few seconds of audio.

 

If you made audio files of various test tones at different frequencies, you could play them and then try and correlate the bars to a given frequency range

If you know, please tell me how to set up convention for these vertical bar 's operation ?

Thanks !!!

If you can do a little calculus see Who is Fourier - a book that goes into great detail on FFT Spectrum analyzers which is very easy to read with lots of simple illustrations piecing it together with the equations used to produce the a graph of any sound. The size of the bars are the Fourier coefficients for that component of sine wave frequencies associated with spectrum of frequencies.