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2. Delta modulation - Wikipedia

   en.wikipedia.org/wiki/Delta_modulation

   The Nintendo Entertainment System's audio processing unit (the Ricoh 2A03 chip) includes a Delta Modulation Channel (DMC) to demodulate percussion and sound effects. The DMC reads delta-encoded audio data via direct memory access into a shift register , which gets shifted out serially into an up/down counter acting as the demodulator's integrator.

3. Volume swell - Wikipedia

   en.wikipedia.org/wiki/Volume_swell

   Beginning with the knob turned down to zero, it is increased when a note is played. The effect can also be performed by using a volume pedal. It is sometimes called "violining", because the sound is similar to a bowed violin. [1] Volume swells can be used in conjunction to bending in order to make it sound like a human voice raising in pitch ...

4. Chorus (audio effect) - Wikipedia

   en.wikipedia.org/wiki/Chorus_(audio_effect)

   The effect can make these acoustic instruments sound fuller and louder than by using a single tone generator (b.e.: a single vibrating string or a reed). Some examples: Piano – Each of the hammers strikes a course of multiple strings tuned to nearly the same pitch (for all notes except the bass notes).

5. Resonator ukulele - Wikipedia

   en.wikipedia.org/wiki/Resonator_ukulele

   A resonator ukulele or "resophonic ukulele" is a ukulele whose sound is produced by one or more spun aluminum cones instead of the wooden soundboard (ukulele top/face). These instruments are sometimes referred to as " Dobro ukuleles," however the term "Dobro" is currently trademarked by the Gibson Guitar Corporation.

6. Dominant seventh sharp ninth chord - Wikipedia

   en.wikipedia.org/wiki/Dominant_seventh_sharp...

   For example, a ii–V–I in C minor could be played as: Dm 7 ♭ 5 – G 7 ♯ 9 – Cm 7. The 7 ♯ 9 represents a major divergence from the world of tertian chord theory, where chords are stacks of major and minor thirds. The 7 ♯ 9 does not satisfy that definition, as the interval between the minor seventh and augmented ninth is an ...

7. Effects unit - Wikipedia

   en.wikipedia.org/wiki/Effects_unit

   Guitar feedback effects can be difficult to perform, because it is difficult to determine the sound volume and guitar position relative to a guitar amp's loudspeaker necessary for achieving the desired feedback sound. [112] [113] Guitar feedback effects are used in a number of rock genres, including psychedelic rock, heavy metal music and punk ...

8. Slicer (guitar effect) - Wikipedia

   en.wikipedia.org/wiki/Slicer_(guitar_effect)

   A slicer is an effects unit which is similar to a tremolo, vibrato, phaser, or autopan. It combines a modulation sequence with a noise gate or envelope filter to create a percussive and rhythmic effect like a helicopter, with rapid cutting out and coming in—on and off. [1] Most have variable speeds and depths, creating different sounds.

9. Guitalele - Wikipedia

   en.wikipedia.org/wiki/Guitalele

   The guitalele is variously marketed (and used) as a travel guitar or children's guitar. It is essentially a modern iteration of the Quint guitar. [5] A guitalele or guitarlele. A guitalele is the size of a ukulele, and is commonly played like a guitar transposed up to “A” (that is, up a 4th, or like a guitar with a capo on the fifth fret).