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  2. Octave effect - Wikipedia

    en.wikipedia.org/wiki/Octave_effect

    Octave effect boxes are a type of special effects unit which mix the input signal with a synthesized 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.

  3. Octave illusion - Wikipedia

    en.wikipedia.org/wiki/Octave_illusion

    The octave illusion is an auditory illusion discovered by Diana Deutsch in 1973. It is produced when two tones that are an octave apart are repeatedly played in alternation ("high-low-high-low") through stereo headphones. The same sequence is played to both ears simultaneously; however when the right ear receives the high tone, the left ear ...

  4. Musical tuning - Wikipedia

    en.wikipedia.org/wiki/Musical_tuning

    The pitches of open strings on a violin. Play ⓘ. In music, the term open string refers to the fundamental note of the unstopped, full string.. The strings of a guitar are normally tuned to fourths (excepting the G and B strings in standard tuning, which are tuned to a third), as are the strings of the bass guitar and double bass.

  5. Shepard tone - Wikipedia

    en.wikipedia.org/wiki/Shepard_tone

    The theory behind the illusion was demonstrated during an episode of the BBC's show Bang Goes the Theory, where the effect was described as "a musical barber's pole". [ 2 ] The scale as described, with discrete steps between each tone, is known as the discrete Shepard scale .

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Octavia (effects pedal) - Wikipedia

    en.wikipedia.org/wiki/Octavia_(effects_pedal)

    Octavia and Vox Wah. The Octavia was an effects pedal designed for Jimi Hendrix by his sound technician, Roger Mayer. [1] It reproduces the input signal from a guitar one octave higher in pitch, and mixes it with the original and added distortion fuzz.

  8. Equalization (audio) - Wikipedia

    en.wikipedia.org/wiki/Equalization_(audio)

    Such an equalizer is called a 1/3-octave equalizer (spoken informally as "third-octave EQ") because the center frequencies of its filters are spaced one third of an octave apart, three filters to an octave. Equalizers with half as many filters per octave are common where less precise control is required—this design is called a 2/3-octave ...

  9. What 'secret' loudspeaker codes mean at department stores - AOL

    www.aol.com/news/2010-10-13-what-secret...

    This "code" is one of many innocuous sounding secret codes that. If you've been shopping in a big box retail store you've probably heard an announcement on the loudspeaker such as, "code yellow ...