Харьковская Национальная Академия Городского Хозяйства
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Priority to UAU200712758UpriorityCriticalpatent/UA51484U/en
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Piezo-Electric Transducers For Audible Bands
(AREA)
Circuit For Audible Band Transducer
(AREA)
Transducers For Ultrasonic Waves
(AREA)
Abstract
An oriented acoustic system with variable characteristic of directivity relates to instrument making and may be used in particular for audio tracks reproduction.
UAU200712758U2007-11-192007-11-19Oriented acoustic system with variable characteristic of directivity
UA51484U
(en)