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Bit Depth refers to the number of bits of information in each audio sample. It dictates the resolution of the sound, with higher bit depths allowing for greater dynamic range.

Modulation in audio involves changing one or more properties of a carrier signal with an external signal (modulator), such as in frequency, amplitude, or phase modulation.

Dynamic Range is the difference between the quietest and loudest volume of an audio signal, usually measured in decibels (dB).

Threshold in audio processing is the level above which compression or another dynamic process begins to be applied to the audio signal.

Amplitude refers to the magnitude of the displacement of a wave form from its mean value. In audio processing, it commonly relates to the volume or loudness of a sound.

FFT is an algorithm to compute the Discrete Fourier Transform (DFT) and its inverse, efficiently analyzing frequency content of a signal.

Direct Sound is the portion of sound that travels directly from the sound source to the ears or microphone, without reflecting off any surfaces.

Delay is an audio effect that records an input signal to an audio storage medium and then plays it back after a period of time.

MIDI is a technical standard that describes a communications protocol for digital instrumentation, allowing different devices to communicate their performance data.

Pan, or panning, is the distribution of a sound signal into a new stereo or multi-channel field, which can be used to create the sensation of movement or spatial location.

ADSR stands for Attack, Decay, Sustain, and Release, and it is an envelope used to control the dynamics and changes in volume over time of a musical note or sound.

Sidechain refers to the usage of one signal to control another, often in compression where a kick drum's signal may control the reduction on a bass line for rhythmic effect.

WAV is an audio file format that stores data in a wave format, which is an uncompressed, lossless format providing high-quality audio reproduction.

Frequency is the number of occurrences of a repeating event per unit of time, measured in Hertz (Hz). In audio, it determines the pitch of a sound.

Gain is the input level of the audio signal and is a unitless measure that controls amplitude.

MP3 is an audio coding format that uses lossy data compression to encode data using inexact approximations, creating smaller file sizes at the cost of audio quality.

Distortion occurs when the amplitude of an audio signal exceeds the maximum level that a system can reproduce, leading to a change in the original waveform shape.

Feedback is a process whereby some portion of the output of a system is returned to the input, which can intentionally or unintentionally affect the process or gain.

Compression is the process of reducing the dynamic range of an audio signal, balancing between the loud and quiet parts for a more consistent volume.

Attack Time is the time it takes for a compressor to start compressing the signal once it surpasses the threshold level, often measured in milliseconds (ms).

Signal-to-Noise Ratio is a measure used in audio to quantify the ratio of the desired signal to the level of background noise, expressed in decibels (dB).

A limiter is a type of compressor with a very high ratio and a fast attack time, designed to prevent an audio signal from exceeding a certain level.

Equalization is the process of adjusting the balance between frequency components within an audio signal, often using linear filters.

Release Time is the time it takes for a compressor to stop compressing the signal after it falls below the threshold level, also measured in milliseconds (ms).

Resonance in audio processing refers to the tendency of a circuit or system to exaggerate one or more frequencies when those frequencies are close to its natural frequency.

Sample Rate is the number of samples of audio carried per second, measured in Hz. Standard CD quality has a sample rate of 44.1 kHz.

Reverb, or reverberation, is the persistence of sound after it is produced, as it reflects off surfaces and creates a sense of space in the listener.

Noise in audio signals refers to the undesirable background sound or interference that can corrupt the clarity or quality of the recorded audio.

A filter in audio processing removes or attenuates specific frequency components from a signal, often categorized as low-pass, high-pass, band-pass, or notch.