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A logarithmic unit that measures the intensity of sound, defining the ratio between two quantities of power.

A container of gas with an open hole, where a volume of air vibrates at a natural frequency due to the elasticity of the air inside.

The reduction in amplitude of oscillations or vibrations due to the dissipative forces.

The persistence of sound after the sound is produced, due to multiple reflections from surfaces.

The sound is produced by hammers striking strings, whose vibrations are transmitted through bridges to a soundboard.

Resonance enhances certain frequencies due to the shape and material of the body.

The fraction of sound energy absorbed by a surface, with the rest being reflected.

Sound is produced when air is blown over a single reed, causing the reed to vibrate and produce sound waves in the body tube.

Integer multiples of the fundamental frequency, determining the timbre of the sound.

Occurs when waves bend around corners or pass through openings, affecting sound localization.

The quality of a musical note that distinguishes different types of sound production.

The result of the interference of two waves traveling in opposite directions, relevant to room acoustics.

Describes how sound amplitude (loudness) changes over time, usually with an ADSR model: Attack, Decay, Sustain, Release.

Sound is produced by lip vibration at the mouthpiece, and pitch is changed using valves or a slide.

The lowest frequency produced by any oscillating body, which is usually most prominent in a musical note.

Sound is produced as air flows across the opening, creating a vibration that resonates in the tube.

Sound is produced by the vibration of the membrane or head, which is struck by hands or sticks.

A measure of opposition that a system presents to the acoustic flow resulting of an acoustic pressure applied to the system.

The reflection of sound that arrives at the listener's ears after the original sound has ended.