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- Octave_effect abstract "Octave effect boxes are a type of special effects unit which mix the input signal with a synthesised signal whose musical tone is an octave lower or higher than the original. The synthesised octave signal is derived from the original input signal by halving (octave-down) or doubling (octave-up) the frequency. This is possible due to the simple two-to-one relationship between the frequencies of musical notes which are separated by an octave. One of the first popular musicians to employ the octave effect was Jimi Hendrix, who also used a variety of other effects in his recordings and public performances.Octave-up effects usually use full wave rectification using diodes to "fold up" the negative part of the waveform to make a new waveform an octave higher in pitch.Octave-down effects are typically produced by converting the signal to a square wave, and then using flip-flop circuits to divide the frequency by two. This creates a buzzy synthesizer like tone. The MXR Blue Box used this method to create a Two Octave drop (expanded to include One Octave down in later re-issues). Jimmy Page used a Blue Box to record the solo on Led Zeppelin's Fool in the Rain. CKY are widely recognized for using "octave-down" effects as part of their signature guitar tone.The Boss OC-2 unit generates tones at one and two octaves down from the input signal. This effect also uses flip-flops to generate square waves at 1/2 and 1/4 of the input signal frequency, but rather than simply mixing in these signals, it uses them to invert the polarity of the input signal on every other cycle (every two out of four cycles for the second octave). This effectively amplitude modulates the input signal with a carrier at half the input signal, creating new frequency components at 1/2 and 3/2 the input signal. The 3/2 component is low-pass filtered out. This more complex approach lessens the synthetic sound of the octave tones by making them more closely associated with the original signal, and also makes the effect volume-sensitive.".
- Octave_effect thumbnail Octaver_graph_up.png?width=300.
- Octave_effect wikiPageID "2235113".
- Octave_effect wikiPageRevisionID "545602332".
- Octave_effect filename "octaver.ogg".
- Octave_effect hasPhotoCollection Octave_effect.
- Octave_effect title "C Major scale with octave-down effect".
- Octave_effect subject Category:Audio_effects.
- Octave_effect type AudioEffects.
- Octave_effect type Consequence111410625.
- Octave_effect type Phenomenon100034213.
- Octave_effect type PhysicalEntity100001930.
- Octave_effect type Process100029677.
- Octave_effect comment "Octave effect boxes are a type of special effects unit which mix the input signal with a synthesised signal whose musical tone is an octave lower or higher than the original. The synthesised octave signal is derived from the original input signal by halving (octave-down) or doubling (octave-up) the frequency. This is possible due to the simple two-to-one relationship between the frequencies of musical notes which are separated by an octave.".
- Octave_effect label "Octave effect".
- Octave_effect label "Octaver".
- Octave_effect label "Octaver".
- Octave_effect label "Octaver".
- Octave_effect label "Octaver".
- Octave_effect label "Октавер".
- Octave_effect label "オクターバー".
- Octave_effect sameAs Octaver.
- Octave_effect sameAs Octaver.
- Octave_effect sameAs Octaver.
- Octave_effect sameAs オクターバー.
- Octave_effect sameAs Octaver.
- Octave_effect sameAs m.06y3h1.
- Octave_effect sameAs Q931470.
- Octave_effect sameAs Q931470.
- Octave_effect sameAs Octave_effect.
- Octave_effect wasDerivedFrom Octave_effect?oldid=545602332.
- Octave_effect depiction Octaver_graph_up.png.
- Octave_effect isPrimaryTopicOf Octave_effect.
