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Electronic Music Sound Design Terms

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AM Synthesis

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Amplitude Modulation Synthesis, a type of sound synthesis where the amplitude of one waveform is controlled by another. Synthesis Context: Less common than FM but used to create metallic or bell-like tones.

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Filter

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A device that removes certain frequencies from an audio signal. Synthesis Context: Filters shape the timbre of the sound by cutting or boosting frequencies often controlled by a cutoff point.

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Oscillator

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A component in synthesizers that generates audio signals used to create sounds. Synthesis Context: Oscillators are the starting point for synthesizing a sound and come in various waveforms like sine, square, sawtooth, and triangle.

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FM Synthesis

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Frequency Modulation Synthesis, a form of sound synthesis where the frequency of one waveform, the carrier, is altered by the frequency of another waveform, the modulator. Synthesis Context: FM synthesis can create complex and rich sounds, used extensively in electronic music and sound design.

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Additive Synthesis

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A sound synthesis technique that adds sinusoidal components together to create a complex waveform. Synthesis Context: Considered to produce very natural and warm sounds, as it mirrors the way sounds occur in nature.

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LFO

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Low-Frequency Oscillator, an electronic frequency which is typically below 20 Hz and creates a rhythmic pulse or sweep. Synthesis Context: LFO is often used for modulating parameters such as pitch, volume, or filters to create vibrato, tremolo, or other effects.

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Envelope

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A set of parameters that control how a sound's amplitude changes over time. Synthesis Context: ADSR (Attack, Decay, Sustain, Release) is a common type of envelope affecting how the sound evolves from start to finish.

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Wavetable Synthesis

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A sound design method that uses a series of waveforms arranged in a table called a wavetable which can be scanned or morphed to produce dynamic sounds. Synthesis Context: Offers rich, evolving textures and is a staple in many modern software synthesizers.

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Granular Synthesis

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A method where sounds are broken down into tiny grains which are then rearranged and layered to form other sounds. Synthesis Context: Creates unusual and often evolving textures, great for experimental sound design.

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Subtractive Synthesis

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A method where partials of a richer waveform are subtracted using a filter to change the sound's timbre. Synthesis Context: One of the most common types of synthesis, used for its ability to shape sounds in a controllable way.

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Bit Depth

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The number of bits of information in each audio sample. Synthesis Context: Higher bit depths can accurately capture more subtle nuances in sound, typically 16 or 24 bits for professional audio recording.

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Sample Rate

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The number of samples of audio carried per second. Synthesis Context: Higher sample rates can capture more detail but require more data, commonly 44.1kHz for CD quality.

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Sidechain Compression

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A technique where the level of one sound is reduced by the presence of another (typically the kick drum). Synthesis Context: Commonly used to make the kick cut through the mix or to create a 'pumping' effect in electronic music.

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Supersaw

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A waveform consisting of multiple sawtooth waves, detuned and combined to create a fuller, richer sound. Synthesis Context: Popularized in trance and other forms of electronic dance music for its epic, anthemic quality.

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Polyphony

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Refers to the number of simultaneous notes a synthesizer or musical instrument can play. Synthesis Context: Polyphonic synthesizers are capable of playing chords, unlike monophonic ones which can only play one note at a time.

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White Noise

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A sound containing all frequencies at equal intensity. Synthesis Context: Used in electronic music for percussion sounds, effects, and creating a sense of space or 'air'.

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ADSR

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Attack, Decay, Sustain, Release: the four stages of an envelope that describe the amplitude profile of a sound over time. Synthesis Context: ADSR is fundamental in shaping the dynamics of a synthesizer's sound.

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MIDI

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Musical Instrument Digital Interface, a technical standard that describes a communications protocol, digital interface, and connectors that allow a wide variety of electronic musical instruments, computers, and other related devices to connect and communicate with one another. Synthesis Context: MIDI carries event messages that specify notation, pitch, velocity, vibrato, panning, and other signals for controlling the musical performance.

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Resonance

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In sound design, the reinforcement or prolongation of sound by reflection or by the synchronous vibration of a neighboring object. Synthesis Context: Resonance is often associated with filters and can emphasize certain frequencies around the cut-off point, adding character to the sound.

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Modulation

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In audio, modulation refers to the process of changing one or more properties of a musical tone or sound signal. Synthesis Context: Examples include LFOs, envelope generators, and modulation wheels affecting parameters like pitch, filter cutoffs, or amplitude.

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