Physical modeling synthesis refers to sound synthesis methods in which a mathematical model calculates the waveform of the sound to be produced. This approach also uses a set of equations and algorithms to mimic the physical source of a sound. It uses partial differential equations, as well as the laws of acoustics, to describe the physical structure of a musical instrument. In…
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Linear Arithmetic Synthesis, or LA synthesis, is a type of audio synthesis. In particular, this one is backed up by the theory that the attack transient of a sound is essential for human perception. It uses a combination of simple digital oscillators and sampled attack transients. The oscillators involve pulse and saw-tooth waveforms to produce…
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To understand phase distortion synthesis, we must first go back to its basics. Casio company created phase distortion, or PD. This company engineers launched the original idea for the CZ series of synthesizers, which involved a Cosmo Synth System. Isao Tomita later perfected the Cosmo Synth System. He was a Japanese synthesis-composer and one of…
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Sample-based synthesis is a type of audio synthesis that uses either hardware or software samplers. The process involves the use of instruments or sampled sounds as the basis for its sounds. Sample-Bases Synthesis: the History Before digital sampling became popular, machines used analog tape decks to playback sampled sounds. Machines evolved and more powerful samplers appeared.…
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This entry aims to explain how a voltage controlled amplifier works. It is a device that can modify the amplitude of a signal. This device involves two types of inputs: the carrier and the modulator. The carrier, also known as the signal input, is where the bipolar input comes in. The modulator, also known as…
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This entry explains the principles of envelopes. To begin with, an envelope signal is a subsonic, aperiodic, unipolar, and timed signal used to modify the volume curve of an audio signal. To better understand envelopes, you should also know what a gate signal is. The gate signal is a two-state signal that is capable of…
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A parametric equalizer is a device that helps edit the different parameters of an audio spectrum. The most common ones are gain or amplitude, center frequency, and bandwidth, which is the inverse of Q. This equalizer has a center frequency that allows the user to customize the equalization process by modifying a particular frequency. This…
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To understand what cutoff filters are, one must first learn what a filter is. In physics, a filter is a porous device for removing impurities or solid particles from a liquid or gas thet passes through it. In the audio universe, filters operate in a very similar way. A cutoff filter is a processor that…
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Tubes, or valve amplifiers, are audio processing devices praised for their unique sounds. People associate them to the vacuum tube components they contain. The first electronic amps used vacuum tubes. The combination of an electronic guitar with a tube amp is a perfect example, for it revolutionized the peculiar guitar sounds. Tubes: How They Work…
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Fuzz distortion is an audio effect that people typically associate to altering the tone of electric guitars, as well as other musical instruments and audio signals. Fuzz is an electronic distortion element that is capable of changing the whole sonic signature. Often, experts describe the rough sound resulting from it as thick and metallic. Fuzz…
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