Music Technology Cheat Sheet

The core ideas of Music Technology distilled into a single, scannable reference — perfect for review or quick lookup.

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Quick Reference

Digital Audio Workstation (DAW)

Software used for recording, editing, mixing, and producing audio files. A DAW serves as the central hub of modern music production, integrating virtual instruments, effects processing, MIDI sequencing, and audio recording into a single environment.

MIDI (Musical Instrument Digital Interface)

A technical standard established in 1983 that allows electronic musical instruments, computers, and other devices to communicate performance data such as note pitch, velocity, duration, and control changes. MIDI transmits instructions rather than audio.

Sound Synthesis

The electronic generation of sound using techniques such as subtractive, additive, frequency modulation (FM), wavetable, granular, and physical modeling synthesis. Each method constructs timbres differently from oscillators, samples, or mathematical models.

Sampling Rate and Bit Depth

Sampling rate is the number of times per second an analog signal is measured during analog-to-digital conversion (measured in Hz), while bit depth determines the number of possible amplitude values per sample. Together they define digital audio resolution and dynamic range.

Audio Signal Processing

The manipulation of audio signals using tools such as equalization (EQ), compression, reverb, delay, distortion, and filtering. Signal processing shapes the tonal balance, dynamics, spatial characteristics, and overall character of recorded or synthesized sound.

Analog-to-Digital Conversion (ADC)

The process of converting continuous analog audio signals (such as those from a microphone) into discrete digital data that a computer can store and process. The reverse process, digital-to-analog conversion (DAC), reconstructs the analog signal for playback through speakers.

Equalization (EQ)

The process of adjusting the balance of frequency components in an audio signal. Parametric EQ allows control over the center frequency, bandwidth (Q), and gain of individual frequency bands, while graphic EQ divides the spectrum into fixed bands.

Dynamic Range Compression

A signal processing technique that reduces the volume of loud sounds or amplifies quiet sounds, thereby narrowing the dynamic range of an audio signal. Key parameters include threshold, ratio, attack time, release time, and makeup gain.

Acoustic Treatment and Room Modes

The use of absorption, diffusion, and bass trapping materials to control how sound behaves in a physical space. Room modes are resonant frequencies determined by a room's dimensions that create standing waves, causing uneven bass response at different listening positions.

Spatial Audio and Immersive Formats

Technologies that reproduce sound in three-dimensional space, going beyond traditional stereo or surround sound. Object-based audio formats like Dolby Atmos and ambisonics allow sound to be placed and moved freely in a 3D sound field around the listener.

Key Terms at a Glance

ADC (Analog-to-Digital Converter):A device that converts continuous analog audio signals into discrete digital samples for computer processing and storage.

Amplitude:The magnitude of an audio signal, corresponding to its loudness. Measured in decibels (dB) in audio engineering contexts.

Buffer Size:The number of audio samples processed in a single block by a computer's audio system. Larger buffers increase latency but reduce CPU load; smaller buffers decrease latency but increase processing demands.

Bus (Audio Bus):A signal path in a mixer or DAW that combines multiple audio channels for collective processing or routing, such as a submix bus or effects send bus.

Clipping:Distortion that occurs when an audio signal exceeds the maximum level a system can handle, causing the waveform peaks to be flattened or 'clipped.'

DAC (Digital-to-Analog Converter):A device that converts discrete digital audio data back into a continuous analog signal for playback through speakers or headphones.

DAW (Digital Audio Workstation):Software application used for recording, editing, mixing, and producing audio, serving as the central platform for modern music production.

Decibel (dB):A logarithmic unit used to express the ratio between two values, commonly used to measure sound pressure level, signal level, and gain in audio systems.

Delay:An audio effect that records a signal and plays it back after a specified time interval, creating echoes. Parameters include delay time, feedback, and wet/dry mix.

Distortion:An alteration of the original audio waveform shape, which can be undesirable (clipping) or intentionally applied as a creative effect (overdrive, fuzz, saturation).

Frequency:The number of complete oscillation cycles a sound wave completes per second, measured in Hertz (Hz). Determines the perceived pitch of a sound.

Gain:The increase or decrease in signal level, measured in decibels. Applied at various stages in the audio chain including preamps, EQ bands, and output faders.

Harmonic:A frequency component of a sound that is an integer multiple of the fundamental frequency. The pattern and amplitude of harmonics determine a sound's timbre.

Headroom:The difference between the nominal operating level of a signal and the maximum level a system can handle before clipping. Adequate headroom prevents unwanted distortion.

Impulse Response (IR):A recording of how an acoustic space or device responds to a brief, broadband sound (impulse). Used in convolution reverb and cabinet simulation to recreate real-world acoustic characteristics.

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