Open AccessNOISE PROTECTION DEVICE DEVELOPMENT FOR LOCAL NOISE CANCELLATION
Author(s) -
A. P. Тyurin,
Pyotr Zavialov,
Alexander Zikov
Publication year - 2019
Publication title -
akustika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.162
H-Index - 7
eISSN - 2570-8775
pISSN - 1801-9064
DOI - 10.36336/akustika20193259
Subject(s) - loudspeaker , active noise control , noise (video) , acoustics , noise control , computer science , frame (networking) , engineering , noise reduction , telecommunications , physics , artificial intelligence , image (mathematics)
Currently the noise factors influence on stationary workplaces is prevalent in the other harmful factors influence total share. The information proposed below reveal the gist of the technical solution related to devices for ensuring the workplace acoustic safety. Noise clipping is provided by digital technology. The technical result is expressed in increasing the noise cancellation efficiency in the device upper local zone, so at the user's head level. The device can be used on stationary workplaces, the technological process implementation on which does not require active physical movements. Product using reduces the load on the human auditory system and ensures its protection. Basic expressions are presented that allow noise control in a noisy space between loudspeakers. The noise protection device contains detecting microphones, a control unit for the active noise cancellation process, loudspeakers and a noise shield located on the frame. A specially designed shield is made in the spherical segment form, to the outer edge of which a rim on flexible brackets is attached with the possibility of detecting microphones free movement along it.The device bearing frame is made in a U-shaped form, in the upper part of which the loudspeakers are mounted with diaphragms facing each other.