Multi-effect signal processors are devices that offer a wide variety of audio effects in one unit. They can modify the pitch of an incoming audio signal, natural reverb effects, time compression and expansion, flanging, delay, and time-reversal and repeat capabilities. The design of most signal processing devices aims at performing more than one function without…
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The flanging effect is an audio effect which combines two audio signals. Because the second signal is somewhat delayed, a swirling effect results. The electronic flanging effect comes from a natural acoustic phenomenon that occurs when listeners perceive a wide-band noise due to a combination of a direct and a delayed sound. The Discovery of…
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The chorus effect occurs when various individual sounds, with similar pitch and timbre, play at the same time. It mimics pitch and timing variations, so an audience can perceive a single instrument source sound as if there were multiple instruments playing in unison. This effect is very common when a group of singers or violinists,…
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The main purpose of vibrato is to add warmth to a note to your music. Worth noting is that it is an effect added to a note itself. Slight variations in pitch are a common byproduct. Consequently, these discrepancies produce huge changes in the directional patterns of a radiated signal. In turn, these add a…
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A frequency shifter is a device that lowers or raises the frequency of an input signal. Engineers achieve this process by using a technique that involves complex amplitude modulation. This shifter does not maintain a harmonic relationship between the tones and the harmonics found in an input signal. Hence, all sounds that are processed by…
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At first, people employed the ring modulator for analog telephony. Specifically, they used it for frequency-division multiplexing. Its target was to carry a variety of voice signals over phone cables. Since this start, ring modulators were part of voice inversions, radio transceivers, and several electronic music effects. Ring Modulator: Its Context Ring modulators began to…
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A phaser is a modulation effect that includes phasers, flangers, and chorus. Phasing is a popular effect in electric guitars. These effects give the impression of movement and constant change. In this sense, modulation refers to as a moment in which a modulator alters a carrier. This carrier is always an audible signal. These three…
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Low-Frequency Oscillation, also known as LFO, is an electronic frequency that usually falls at the far end of the audio range. This frequency typically falls below 20Hz, so it’s practically impossible for the human ear to hear it. Experts commonly use an LFO to create effects within the electronic music production universe. Low-frequency oscillation creates…
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Mid/Side processing is a technique that processes stereo signals. Within this process, the signal has two mono signals. One of them is specifically for the left channel, while the other one is for the right. Although some signals might emerge from the center when creating a stereo signal, most of the sounds take place either…
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Digital audio processing implies nonlinear processing. The reason is that the latter’s foundation is in linear time-invariant systems. Many technical systems involve both linearity and time-invariance, especially those where input and output signals fix to a specific amplitude range. Many analog audio processing devices have nonlinearities, including analog effect units, valve amps, analog tape recorders,…
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