An octave is a ratio of 2:1 and, in equal temperament, an octave comprises 12 equal semitones. Each semitone therefore has a ratio of 21/12 (approximately 1.059). By convention, A4 is often set at 440 Hz. These data were used to calculate the table shown, which gives the frequency of any standard keyboard note or MIDI note number.
Keyboard Notes By Frequency

đđĒŊâ¨đđđĒļ De gouden Phi-verhouding komt voort uit de fibonacci-reeks ⨠In westerse muziek is de noot A, de laatste tijd doorgaans afgestemd op 440Hz. Maar het afstellen op 432Hz omdat de noot historisch is gestemd, zou muziek meer in harmonie kunnen brengen met de natuurlijke resonantie van de aarde en de rest van het universum đĒâ¨ī¸. â¤ī¸
Note Frequency Chart


Temperierte Frequenzen


Want to know more about notes, the sound waves they produce, and the frequency of these notes? Check out our note frequency chart in this handy guide!
Learn the exact frequencies behind musical notes with this easy-to-understand note frequency chart. Explore note-to-Hz conversions, concert pitch references, tuning frequencies, and pitch training essentials. Ideal for singers, guitar players, piano students, music teachers, and anyone working on ear training, tuning accuracy, or pitch recognition.
Piano keys labeled with scientific pitch notation and note frequencies #music







