An effects unit, effects processor, or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing.
Wah-wah is an imitative word for the sound of altering the resonance of musical notes to extend expressiveness, sounding much like a human voice saying the syllable wah. The wah-wah effect is a spectral glide, a "modification of the vowel quality of a tone".
A wah-wah pedal, or simply wah pedal, is a type of effects pedal designed for electric guitar that alters the timbre of the input signal to create a distinctive sound, mimicking the human voice saying the onomatopoeic name "wah-wah". The pedal sweeps a band-pass filter up and down in frequency to create a spectral glide. The wah-wah effect originated in the 1920s, with trumpet or trombone players finding they could produce an expressive crying tone by moving a mute in, and out of the instrument's bell. This was later simulated with electronic circuitry for the electric guitar when the wah-wah pedal was invented. It is controlled by movement of the player's foot on a rocking pedal connected to a potentiometer. Wah-wah effects may be used without moving the treadle as a fixed filter to alter an instrument’s timbre, or to create a "wacka-wacka" funk-styled rhythm for rhythm guitar playing.
Electro-Harmonix is a New York City-based company that makes electronic audio processors and sells rebranded vacuum tubes. The company was founded by Mike Matthews in 1968. It is best known for a series of guitar effects pedals introduced in the 1970s and 1990s. EHX also made a line of guitars in the 1970s.
Juan Alderete de la Peña is an American musician, best known as the longtime bassist of Racer X, the Mars Volta and Marilyn Manson.
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. 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. Hendrix used an octave-fuzz pedal known as the octavia.
Moogerfooger is the trademark for a series of analog effects pedals manufactured by Moog Music. There are currently eight different pedals produced; however, one of these models is designed for processing control voltages rather than audio signal. A sixth model, the Analog Delay, was released in a limited edition of 1000 units and has become a collector's item. Moog Music announced on August 28, 2018, that the Moogerfooger, CP-251, Minifooger, Voyager synthesizers, and some other product lines were being built using the remaining parts on hand and discontinued thereafter.
Chorus is an audio effect that occurs when individual sounds with approximately the same time, and very similar pitches, converge. While similar sounds coming from multiple sources can occur naturally, as in the case of a choir or string orchestra, it can also be simulated using an electronic effects unit or signal processing device.
"Higher Ground" is a song written by Stevie Wonder which first appeared on his 1973 album Innervisions. The song reached number 4 on the Billboard Hot 100 and number 1 on the US Hot R&B Singles chart. Wonder wrote and recorded the song in a three-hour burst of creativity in May 1973. The album version of the song contains an extra verse and runs 30 seconds longer than the single version. The unique wah-wah clavinet sound in the song was achieved with a Mu-Tron III envelope filter pedal. The bass line is provided by a Moog synthesizer and using overdubs, Wonder played all instruments on the track, including drums and percussion.
Auto-wah is a type of wah-wah effects pedal typically used with electric guitar, bass guitar, clavinet, and electric piano etc. The distinctive choppy rhythm guitar sound on many funk and disco recordings from the 1970s popularized the effect.
Brian Gibson is an American musician, artist, and video game developer based in Providence, Rhode Island. Gibson is best known as the bassist for the band Lightning Bolt. In the summer of 2015 he co-founded the game development company Drool. At Drool, he created the art and music for the video game Thumper and co-designed the game alongside Marc Flury. Thumper was released with critical acclaim in October 2016. He was previously a lead artist working at video game company Harmonix since 2001, but quit in the summer of 2015.
The Roland GR-500 is a guitar synthesizer. Manufactured by the Roland Corporation and FujiGen in 1977, it was one of the first guitar synthesizers.
The Korg DSS-1 is a polyphonic sampling synthesizer released by Korg in 1986. As Korg's initial entry into the sampling market, the DSS-1 combines sampling, additive synthesis, and waveform drawing with an analog signal path. The DSS-1 was released a time when major synthesizer manufacturers like Yamaha and Casio were beginning to explore sampling, an area of sound design dominated by companies like Fairlight, E-mu, and Ensoniq. Korg did not stay long in the sampling arena; the DSS-1 was the company's only sampler until 1998 when Korg introduced sampling options on their Triton and Trinity series of workstations.
Multivox was an American-based synthesizer company since the mid-1970s until the 1980s. Originally it was founded in the mid-1940s as the guitar and amplifier manufacturing subsidiary of Peter Sorkin Music Company, a New York-based retailer/wholesaler. Then eventually it established separate corporate identity, and after the close of Sorkin Music in the mid-1970s, it continued in existence for fourteen years, according to the Blue Book of Guitar Values. In addition to synthesizers, the company marketed several effects pedals. These included the Big Jam series guitar effects line.
Source Audio is a guitar effects pedal company based near Boston, Massachusetts. They produce modular effects pedals for electric guitar and bass, such as the Nemesis Delay, Ventris Dual Reverb, and Collider Delay+Reverb, as well as the C4 Synth, a modular rack synthesizer in pedal format, the Aftershock Bass Distortion, and the EQ2, a 10-band parametric equalizer with a plug-in style desktop interface. They are also the creators of the Hot Hand Wireless Effects Controller, a device worn around the finger that uses an accelerometer to send expression signal to an effect like an envelope filter. Source Audio mainly uses DSP to create their effects, and are known to program their own processor chips.
Vintage musical equipment is older music gear, including instruments, amplifiers and speakers, sound recording equipment and effects pedals, sought after, maintained and used by record producers, audio engineers and musicians who are interested in historical music genres. While any piece of equipment of sufficient age can be considered vintage, the term is typically applied to instruments and gear from the 1970s and earlier. Guitars, amps, pedals, electric keyboards, sound recording equipment from the 1950s to 1970s are particularly sought after, while musical equipment from the 1940s and earlier is generally far more expensive and sought out mainly by museums or collectors to preserve historical equipment, rather than to perform with.
The Mu-Tron III is an envelope filter made by Musitronics Corporation. "The world's first envelope-controlled filter" was first made in 1972 by Mike Beigel and quickly became an essential effect for many funk musicians. It was produced again, in a modified version, in 2014.
Shenzhen Mooer Audio Co., Ltd. is a manufacturer of musical accessories, especially effects units, based in Shenzhen, China.
An inertial audio effects controller is an electronic device that senses changes in acceleration, angular velocity and/or a magnetic field, and relays those changes to an effects controller. Transmitting the sensed data can be done via wired or wireless methods. To be of use the effects controller must be connected to an effect unit so that an effect can be modulated, or connected to a MIDI controller or musical keyboard. The Wah-Wah effect is a classic example of effect modulation.
David Cockerell is an electronics engineer and designer. He started his career in the synthesizer world when Peter Zinovieff hired him to work for his EMS company in Putney in 1966, where he designed classic EMS synthesizers such as the Synthi VCS3, Synthi AKS and Synthi 100. In 1974 he worked for Electro-Harmonix in New York, where he first designed guitar pedals like the Small Stone phaser and Electric Mistress flanger. Still working for Electro-Harmonix, in 1980, Cockerell designed one of the first digital delay pedals with looping capabilities, the Instant Replay, followed by the 2 Second Digital Delay in 1981 and the 16 Second Digital Delay in 1982. This led him later to work at Akai, where he was involved in the design of samplers like the S612, S900, S1000, and the famous MPC60.
