S
Salmon Egg
- Jan 1, 1970
- 0
Where can I get cheap high frequency sound generators. I was thinking of
something like the sirens in smoke alarms that I can drive at their
fundamental frequency or at harmonics.
Another possibility is piezoelectric film that I saw demonstrated many years
ago.
Bill
something like the sirens in smoke alarms that I can drive at their
fundamental frequency or at harmonics.
Another possibility is piezoelectric film that I saw demonstrated many years
ago.
Bill