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Frequency (Hz) Octave Description 16 to 32 1st The lower human threshold of hearing, and the lowest pedal notes of a pipe organ. 32 to 512 2nd to 5th Rhythm frequencies, where the lower and upper bass notes lie. 512 to 2,048 6th to 7th Defines human speech intelligibility, gives a horn-like or tinny quality to sound. 2,048 to 8,192 8th to 9th
This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). [1] [2] Every octave is made of twelve steps called semitones.
100 Hz 100 Hz: Cyclic rate of a typical automobile engine at redline (equivalent to 6000 rpm) 261.626 Hz: Acoustic – the musical note middle C (C 4) 440 Hz: Acoustic – concert pitch (A above middle C; A 4), used for tuning musical instruments 716 Hz: Rotational period of one of the fastest known millisecond pulsars, PSR J1748−2446ad [4] 10 3
In 1701, Sauveur proposed that all musical pitches should be based on a son fixe (fixed sound), that is, one unspecified note set to 100 Hz, from which all others would be derived. In 1713, Sauveur changed his proposal to one based on C 4 set to 256 Hz; this was later called "philosophical pitch" or "Sauveur pitch".
For example, a perfect fifth, say 200 and 300 Hz (cycles per second), causes a listener to perceive a combination tone of 100 Hz (the difference between 300 Hz and 200 Hz); that is, an octave below the lower (actual sounding) note. This 100 Hz first-order combination tone then interacts with both notes of the interval to produce second-order ...
Note sounded (relative to open string) Audio frequency Cents above fundamental (offset by octave) Audio (octave shifted) 1 st: fundamental, perfect unison: P 1 600 Hz: 0.0 ¢ Play ⓘ 2 nd: first perfect octave: P 8 1 200 Hz: 0.0 ¢ Play ⓘ 3 rd: perfect fifth: P 8 + P 5 1 800 Hz: 702.0 ¢ Play ⓘ 4 th: doubled perfect octave: 2 · P 8 2 400 ...
Sound is a traveling longitudinal wave, which is an oscillation of pressure. Humans perceive the frequency of a sound as its pitch. Each musical note corresponds to a particular frequency. An infant's ear is able to perceive frequencies ranging from 20 Hz to 20 000 Hz; the average adult human can hear sounds between 20 Hz and 16 000 Hz. [11]
If two notes are simultaneously played, with frequency ratios that are simple fractions (e.g. 2 / 1 , 3 / 2 , or 5 / 4 ), the composite wave is still periodic, with a short period – and the combination sounds consonant. For instance, a note vibrating at 200 Hz and a note vibrating at 300 Hz (a perfect fifth, or 3 / 2 ...