The difference between tuning to A432 and A440 is the frequency at which the A note is set. A432 is slightly lower in pitch than A440. Tuning to A432 can create a warmer and more relaxed sound in music, while A440 tuning is more commonly used and can sound brighter and more energetic.
Tune the piano's A440 to the fork. You don't have to tune it perfectly at first. As long as you know what side of "smooth" you're on, you can tune A440 so that there is a comfortable beat-rate when played with the fork. Then tune the piano's A220 to the piano's A440. Make the beat rate for A220 the same as when you play A440 against the fork. If you made A440 sharp, tune A220 "outside of smooth". If you made A440 flat, tune A220 "inside of smooth". A220 will be in tune. Alternative: Tune one wire of A3 with the fork, as described above (but tune it near the correct frequency). Then tune the other wires of A3 to the first one, using the same "beat" idea. Finish by pulling the first wire to unison.
Sharp's ER-A440 is very easy to program.
The US music industry suggested A440 Hz as the standard pitch in 1925 and it was adopted throughout the US in 1926. In 1955, the International Organization for Standardization adopted A440 Hz as the world tuning standard. However, it had been suggested and used much earlier than that in isolated areas. The Paris Conservatoire adopted A440 as the "modern concert pitch" as early as 1812.
The wavelength of the tuning note A440 can be found using the formula: wavelength = speed of sound / frequency. The period can be calculated using the formula: period = 1 / frequency. For A440 (440 Hz), frequency is 440 Hz, speed of sound is approximately 343 m/s, so the wavelength is around 0.779 meters and the period is approximately 0.00227 seconds.
If the pitch increases from A440 to A880, the wavelength of the sound decreases by half. This is because pitch and wavelength are inversely proportional - as pitch increases, wavelength decreases.
That is not the serial number, it means that A is tuned to 440 Hz.
A piano is typically tuned in the key of A440, which means that the A above middle C vibrates at 440 Hz.
Pitch is a frequency and is measured in Hertz. A common tuning pitch is A440; 440 refers to the frequency of the pitch.
The wavelength would be 0.786.
For accurate tuning on a guitar tuner, it is recommended to set the tuner to standard tuning (EADGBE) and ensure the reference pitch is set to A440 Hz.
The A440 option on your metronome is to produce the note of A at 440 HZ. It's on the metronome to help you to tune your voice to pitch of the note of A as a starting point. Specifically A440 is the A in the fourth octave (in orders words A4, the A above middle C). See the related link for further information.