Pure tones

The tones below were generated using a signal generator connected to a speaker and measured with a frequency counter so they are correct to high accuracy. They are “perfect pitch” notes and somewhat colourless but you might be able to match them to racquet and string sounds, or to hollow bat sounds, depending on whether you have good hearing. If you are tone deaf then they won’t help at all, but some professional tennis players have been known to match the sound of their strings with a tuning fork.

100 Hz 150 Hz 200 Hz 300 Hz 400 Hz

500 Hz 510 Hz 520 Hz 530 Hz 540 Hz

550 Hz 560 Hz 570 Hz 580 Hz 590 Hz

600 Hz 610 Hz 620 Hz 630 Hz 640 Hz

650 Hz 660Hz 670 Hz 680 Hz 690 Hz

700 Hz 1000 Hz 2000 Hz 3000 Hz

Tennis strings ping (vibrate) at about 500 to 700 Hz

Baseball bats ping at aboout 1000 – 2000 Hz

Racquet frames and wood bats vibrate at about 130 – 200 Hz, but you need to put your ear close to the handle to hear them, and hold the racquet or bat lightly about 6 – 7 inches from the end of the handle, so as not to damp the vibrations.