> Unless my LC oscillator has a low Q, it will keep oscillating Correct! You can add a resistor in parallel to reduce Q (but it will naturally "not be perfect"

> Unless my LC oscillator has a low Q, it will keep oscillating Correct! You can add a resistor in parallel to reduce Q (but it will naturally "not be perfect" since the transducer is putting energy out as sound waves and it's not really a capacitor.