What is the frequency one octave above 440 Hz?
Frequency of Middle C
|A-almost-an-octave-above-middle-C is at||440 Hz|
|Raise a fifth to E-more-than-an-octave-above-middle-C||440(3/2)=660 Hz|
|Lower an octave to E-just-above-middle-C||660/2=330Hz|
|Raise a fifth to B-almost-an-octave-above-middle-C||330(3/2)=495|
|Lower one octave to B-immediately-below-middle-C||495/2=247.5Hz|
For example, if one note has a frequency of 440 Hz, the note one octave above is at 880 Hz, and the note one octave below is at 220 Hz. The ratio of frequencies of two notes an octave apart is therefore 2:1.
- Octave nomenclature. Middle C (the fourth C key from left on a standard 88-key piano keyboard) is designated C4 in scientific pitch notation, the most commonly recognized in auditory science, while both C4 and the Helmholtz designation c' are used in musical studies.
- - All of Brendon Urie vocal range consisting of four octaves and seven notes( (D2 - C7),displayed with live and studio notes. This is one of the most amazing register for a tenor singer of all time.
- Perfect octave, 6 whole steps or 12 half steps: Augmented octave, 6 1/2 whole steps or 13 half steps: Diminished octave, 5 1/2 whole steps or 11 half steps: See I > Intervals for related entries.
An octave band is a frequency band where the highest frequency is twice the lowest frequency. For example, an octave filter with a centre frequency of 1kHz has a lower frequency of 707Hz and an upper frequency of 1.414kHz. Any frequencies below and above these limits are rejected.
- When more detailed information about a complex sound is needed, the frequency range of 20Hz to 20kHz can be split into sections or bands. This is done electronically within a sound level meter. These bands usually have a bandwidth of one octave or one third octave.
- Logarithmic scales of frequency and amplitude. The frequency difference between C' and C'' is 264 Hz; betwen C'' and C''' it is 528Hz, twice as large. One octave is not a fixed frequency difference but a frequency ratio of 2:1. The size of each semitone in Hz gets larger as we go higher up the musical scale (figure 1).
- A logarithmic scale is a nonlinear scale used when there is a large range of quantities. Common uses include earthquake strength, sound loudness, light intensity, and pH of solutions. Logarithmic scales are also used in slide rules for multiplying or dividing numbers by adding or subtracting lengths on the scales.
Updated: 2nd October 2019