Synth Glossary

  • AC

    Alternating Current or "AC", refers to electrical current or voltage that periodically reverses direction, in contrast to Direct Current (DC) which flows...

  • AC coupled

    Refers to modules in synthesizers that only transmit alternating current (AC) signals, effectively blocking direct current (DC) components. This feature is...

  • Amplitude

    Amplitude refers to the strength or level of both audio and control voltage (CV) signals. For audio signals, amplitude correlates with loudness—higher...

  • Attenuator

    A module that reduces the amplitude or power of a signal without distorting its waveform. It is used to control the strength of a signal being sent from...

  • Band pass filter

    A band-pass filter (BPF) allows a specific range of frequencies, centered around a cutoff frequency, to pass through while attenuating frequencies outside...

  • Black Noise

    Black noise is another name for silence, representing the absence of noise. In synthesis, it’s used to create pauses or breaks in sound.

  • Blank Panel

    A physical panel used to fill unused spaces in a modular synthesizer case. Blank panels prevent dust, debris, or accidental contact with exposed power...

  • Blue noise

    Blue noise: Contains more energy at higher frequencies, resulting in a "hissing" sound that is more pronounced at higher pitches. Great for making hi hats!

  • Blue Noise

    Blue noise is the inverse of pink noise, with a +3 dB/oct increase in power, emphasizing the higher frequencies. Also referred to as azure noise, it’s used...

  • BPM

    Beats per minute (BPM) is a unit typically used to measure tempo in music. It represents the number of beats (pulses or clicks) that occur in one minute....

  • Brown noise

    Brownian noise, or Brown noise: Also known as red noise, has more energy at lower frequencies, creating a deeper, smoother sound. It is similar to the...

  • Clock divider

    A clock divider, also known as a frequency divider, is a module that takes an incoming signal at a certain frequency and generates a lower, divided output...

  • Clock Generator

    A device capable of generating regular, rhythmic pulses, triggers, and/or gates. Used to control the timing of events like setting the tempo of a...

  • Comparator

    A module or circuit that compares an input signal to a set threshold and outputs a signal based on whether the input is above or below that threshold....

  • Compressor

    A compressor is a device or module that reduces the dynamic range of an audio signal by attenuating its louder parts and optionally boosting its quieter...

  • Control voltage

    Control Voltage, or CV, is like the secret sauce of modular synthesis. It's the electrical signal used to control parameters like pitch, volume, and...

  • DC

    In modular synthesis, "DC" refers to Direct Current, a type of electrical current that flows in a constant direction. In the context of modular...

  • DC coupled

    Refers to modules in synthesizers that can transmit both AC (audio signals) and DC (control voltages) without blocking the DC component. This feature is...

  • DC offset

    In synthesizer terms, DC offset refers to a condition where the average voltage level of an audio signal is shifted away from zero volts. This shift means...

  • Delay

    A time-based audio effect that records an input signal and plays it back after a certain amount of time, creating a delayed repetition of the original...

  • Distortion

    Distortion is an audio effect that alters the waveform of a signal, adding harmonics and changing its timbre. It can be achieved through analog circuitry,...

  • Envelope Follower

    A module that tracks the volume shape of an input signal and generates a control signal based on its amplitude variations. This control signal mirrors the...

  • Envelope generator

    An envelope generator is a module that controls the evolution of a sound's shape over time. The most common type has four stages: attack, decay, sustain,...

  • Equalizer

    A device or module that adjusts the balance of frequencies within an audio signal. Equalizers allow specific frequency ranges to be boosted, cut, or shaped...

  • Feedback

    In modular synthesis, feedback refers to the process of routing the output of a module or system back into its input, either directly or through other...

  • Filter

    A filter is a module that selectively allows certain frequencies to pass through while attenuating others. It's used to shape the frequency content of...

  • Frequency

    The number of times a waveform completes one full cycle in a second, measured in Hertz (Hz). Frequency determines the pitch of a sound—the higher the...

  • Frequency shifter

    A frequency shifter is a device or module that uniformly shifts all frequencies of an input audio signal by a fixed amount in hertz (Hz). Unlike a pitch...

  • Function Generator

    A module or device that generates control voltages with dynamic shapes, typically used for modulation, envelopes, or logic-based patching. Function...

  • Fundamental

    The lowest frequency of a periodic waveform, often referred to as the “base” frequency. It is the frequency that sets the pitch or "note" of the sound,...

Sign up to receive email notifications when new content is published.