A tuning fork of 256 Hz will resonate with a 512 Hz frequency because the latter is a harmonic of the former. Specifically, 512 Hz is the second harmonic of 256 Hz, meaning it is a whole number multiple (2x) of the fundamental frequency. When the 512 Hz frequency is present, it causes the 256 Hz fork to vibrate in sympathy, resulting in resonance. This phenomenon occurs due to the principle of resonance, where an object vibrates at its natural frequency when exposed to a matching frequency.
Audiologists prefer to use a 512 Hz tuning fork for several reasons. This frequency is optimal for assessing hearing sensitivity, as it falls within the range of human speech frequencies and is less susceptible to environmental noise. Additionally, the 512 Hz tuning fork provides a good balance between high and low frequencies, making it effective for identifying conductive and sensorineural hearing loss. Its durability and consistent pitch make it a reliable tool for clinical assessments.
The frequency of a piano note is the same on both sides. If a piano key is producing 256 Hz on the right side, it will also produce 256 Hz on the left side. The frequency is determined by the pitch of the note being played, which is consistent across both sides of the piano.