Simple Explanation

The continuation of sound waves that bounce around a space after the sound source has stopped.

Concise Technical Definition

Reverberation refers to the sound waves that persist in a space after the original sound source has stopped. It describes the amount of sound that continues to reflect off hard surfaces, creating a blend of multiple echoes that contribute to the overall sound field in the room. The length of time the sound remains audible is called the reverberation time, often measured as the time it takes for the sound to decay by 60 dB. Reverberation should be contrasted with echo and ambiance, which have different acoustic effects.

Layman-Friendly Analogy

It’s like hearing the fading sound of a bell after it’s been struck. The sound bounces off walls, floors, and ceilings, lingering in the space before it completely fades away.

Industry Usage Summary

Reverberation plays a key role in room acoustics, especially in music production, concert halls, theaters, and recording studios. It affects how we perceive sound in a space, contributing to the feeling of size and ambiance. In music and sound design, controlled reverberation is used to create a sense of depth and realism. Reverberation time (RT60) is a critical measurement for designers, helping them balance the acoustics of a room to avoid excessive echo or too little reverberation. Reverberation is often manipulated in audio systems using digital signal processing (DSP) to simulate or enhance natural acoustic effects in various environments.

Engineering Shortcut

The lingering sound in a space after the sound source stops, measured as reverberation time (RT60).

Full Technical Explanation

Reverberation refers to the persistence of sound in an enclosed space after the original sound source has ceased. It results from sound waves reflecting off surfaces such as walls, floors, and ceilings, blending together to create a continuous, decaying sound field. The total length of time the sound field remains audible is called reverberation time, commonly measured as the time it takes for the sound to decay by 60 dB. Reverberation is often contrasted with echo, which is a distinct, clearly identifiable reflection of sound, and ambiance, which refers to the general acoustic atmosphere of a space. Reverberation is crucial in acoustics design for both live performance venues and recorded audio environments, as it influences how sound is perceived and experienced in a room. Acousticians often manipulate reverberation time to ensure optimal sound quality, avoiding too much or too little reflection that can disrupt clarity or warmth.