Piano key frequencies

A list of the frequencies of all the notes of the piano keyboard in the same stage mood. For this, the note names in German and in English.

In addition to using high - or subscript numbers for the octave and the notation by means of strokes is in use. This is partly due the German pronunciation of the notation below. It is shown by the example of octaves of concert pitch here:

• A2 ( also A'' ) = subcontra A
• A1 ( also A ') = contra -A
• A = Big A
• A = A little
• A1 (also a ') = center A
• A2 (also a'') = A two coated
• A3 (also a'' ' ) = A three coated
• A4 (also a'' '') = A four coated

Note:

• The pitch (our a1) is referred to in the U.S. as A4.

• The frequencies have been calculated and are not those of a well- tuned instrument ( see extension).

• Based on psycho- acoustic findings, we hear sine tones are not linear; up to about 500 Hz extend the logarithmic frequency scale and the logarithmic mel scale almost proportionally (100 Hz = 100 mel, 200 Hz = 200 mel ); also show significant deviations (1000 Hz = 850 mel, 8000 Hz = 2100 mel ). Complex musical tones are perceived almost as the theoretical logarithmic frequency scale up to about 5 kHz. Errors are within the currently not yet perceptible range.

• In the twelve -step scale, the frequency of direct neighbor tones differ by a factor

The following equation yields the frequency f from the key number n, as shown in the table below.

This equation can also be written as:

The key number ( 0.1 = 1 cent) is obtained from the frequency in the following equation:

Virtual keyboard

The following keys are only available on a few and very large concert grand pianos, see the piano.