METHOD OF CREATING ACOUSTIC HOLOGRAMS FOR THEATRE, CONCERT AND OTHER HALLS Russian patent published in 2015 - IPC E04B1/99 

FIELD: physics.

SUBSTANCE: method of creating acoustic holograms includes coating internal surfaces of facilities with a liquid hardening material with simultaneous application of sound wave pressure on the painted surface until complete hardening of the applied coating by emitting sound in the form of a travelling sequence of sounds which provides a volume of 30-80 dB and operating in the range from 2 to 30000 Hz. The travelling sequence of sounds, which excites resonance waves in the facility, is generated by repeated glissando from low frequencies to high frequencies with respect to overtones, situated in a natural series of integer harmonic ratios from 1 to 12 for one minute. The sound source is placed at a distance of ѕ of the sound wavelength from the painted surface. Exposure of the hardening material to the sound wave pressure continues for another 1-3 hours after the hardening of materials covering the enclosing surfaces.

EFFECT: invention improves acoustic characteristics of facilities with complex architectural shapes.

6 dwg