1/18/2024 0 Comments Best tuning fork frequency![]() ![]() But for a homemade tuning fork that effect could be bad. At the level of instrument tuning accuracy that effect will not be bad enough to cause unacceptable pitch accuracy, since it is well below about 0.1 Hz or 1 cent in the forks I have studied music sounds OK within that accuracy. That effect is called "overdrive" or running an oscillator in the "non-linear regime" but of course that effect is always present to some degree, if you look close enough, in any parameter regime. ![]() Those onomatopoeias mimic the characteristic frequency rise as the oscillator's sound quickly dies out, the metal swings through smaller and smaller arcs and so the restoring force of the metal becomes more and more linear versus displacement distance. Thus cheap soft metal oscillating things go "boing" or "twang". The tines have farther to move and though the internal restoring force also increases with displacement, it will not be enough to exactly keep the frequency steady. ![]() If the tines of a tuning fork are struck very hard the frequency will drop because All physical harmonic oscillators will change their frequency versus the amplitude of oscillation, (even precision pendulum clocks). ![]()
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