The digital pulse drive signal rich in harmonics is adjusted in frequency, until the drive signal
harmonic’s are synchronized with the acoustic cavity max. sound peaks.
The combination of both systems enables the creation of an endless number of sound signals
or different alarm applications such as vehicle industry, sirens, security warning in acces and door
controls, red light stop warning, ultrasound detection process, optical sensor detection, etc...
A typical car horn adjusted with two piezo systems as described above is consuming only
20% of a traditional magnetic car horn, adjusted to a specific acoustic sound signal with a
specific complex low frequency content.
dB SPL (A)
120.0
110.0
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0 0.0
30 50 70 100 200 300 500 700 1k 2k 3k 5k 7k 10k 20k Wide
Frequency (Hz)
DIMENSIONS (car horn prototype model)
113
1800.00 Hz 3550.00 Hz
Fig 5: Frequency response and total SPL of the car horn prototype model at 2m.
200 103
Specific acoustic systems and electric drive circuits can be designed and
developed by SONITRON on demand of the customer.
Mail to support@sonitron.be for more information and models on request
120.0
110.0
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
107 dB(A)
74
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