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...oubling is solely a matter of customary usage.}} Specification in terms of octaves is therefore common in [[audio electronics]]. A frequency ratio expressed in octaves is the base-2 [[logarithm]] ([[binary logarithm]]) of the ratio: ...

...pitch intervals describe octave information in that they do not treat all octaves as being equivalent. Pitch intervals, both ordered and unordered, may ther By treating all octaves as being equivalent, ''pitch-classes'' contain less information (ex 'C') th ...

...um bandwidth of sampled data by a factor of 2 (one octave). When multiple octaves of reduction are needed, a cascade of half-band filters is common. And whe ...

...002 {{ISBN|0-691-09541-8}}. "Scientific pitch...has the advantage that all octaves of C correspond to powers of two."</ref><ref>Herbert Stanley Allen, Harry M ...

The points in a lattice represent pitch classes (or pitches if octaves are represented), and the connectors in a lattice represent the intervals b ...ond (horizontal and vertical), with the option of imagining depth to model octaves: ...

| Octaves | Octaves ...

...constructed entirely from stacking of three basic purely-tuned intervals (octaves, thirds and fifths). Since the perception of consonance seems related to lo ...ce (music)|lattice]] (one dimension, or one direction, for each prime). If octaves are ignored, it can be seen as a 2-dimensional lattice of [[pitch class]]es ...

...is taken to be [[C_(musical_note)#Designation_by_octave|C{{sub|0}}]], four octaves below [[middle C]].{{sfn|ANSI/ASA S1.1|2013}} ...

...the 16th-tone piano has a 97-key layout arranged in 8 conventional piano "octaves", music for it is usually notated according to the key the player has to st ...

...d into multiple levels of band divisions and subdivisions, and rather than octaves, the highest level of [[Electromagnetic spectrum#Regions|radio bands]] ([[v ...

...he '''''Study No. 15''''' is a canon 3/4, in which the two parts are three octaves apart and the faster meter alternates in a way that both parts begin and en ...

Note that the resulting bandwidth is in units of octaves. ...

...es." To build chords, Fripp uses "perfect intervals in fourths, fifths and octaves", so avoiding [[minor third]]s and especially [[major third]]s,<ref name="M ...tunings, which have exactly one [[pitch class]] (but may have two or more octaves, for example, E2, E3, and E4'); non-unison ostrich tunings are not regular. ...

...portion <math>\sqrt[25]{5}</math>—in other words, the interval of 5:1 (two octaves plus a just major third) is divided into 25 equal parts. This differs from ...

...ertone]]s, but because of the common "egg" shape, these overtones are many octaves above the keynote scale.<ref name="Musical Acoustics pp.473"/> In similar i ...

...50s by Davis's Cinema Engineering company. It featured six bands, each 1.5 octaves wide, with a boost or cut range of 8&nbsp;dB. It used a slide switch to adj where ''N'' is the bandwidth in octaves. The reverse mapping is: ...

Calculations of the frequencies for the modes up to 5 octaves above the “basic frequency” (960&nbsp;Hz for the Feed-Drum) gives the follo ...

...commonly considered to be equivalent when they differ by a whole number of octaves; this equivalence can be represented geometrically by the [[chromatic circl ...

...nds higher in pitch than [[pink noise]] (random noise spread evenly across octaves) as white noise has more high frequency content. ...