buikbekkenecho

Buikbekkenecho is a term used in experimental acoustics to describe a distinctive impulse-response pattern. It refers to an initial strong reflection followed by a clustered sequence of secondary echoes that decay more slowly, producing a perceptual central energy bulge or “belly” in the overall sound envelope.

The concept emphasizes a nonuniform decay where the energy distribution features a pronounced middle region, rather than a smooth, monotonic falloff. It is associated with phenomena such as irregular or highly diffusive geometries, localized resonances, and frequency-dependent absorption that together create grouped echo paths with similar travel times. The result can be a perceptual richness or fullness in the sound, sometimes described as a warm or body-like quality.

Buikbekkenecho is used mainly in experimental or speculative discussions and is not widely adopted as a formal category in standard architectural acoustics. It arises in contexts involving unusual room shapes, artificial diffusion networks, or synthetic sound fields designed to explore nontraditional reverberation textures. In these contexts, researchers and practitioners examine how geometry and material properties shape the impulse response and its perceived energy distribution, rather than focusing solely on traditional measures like RT60.

Measurement and analysis typically rely on impulse-response recordings and time-frequency methods to map the energy envelope and identify clustered echo groups. Applications appear in artistic sound design, virtual reality audio, and architectural concepts that seek to experiment with nonuniform reverberation for specific perceptual effects. See also: echo, reverberation, impulse response.