Upcoming work in the MRC of Roussillon - Antinoise wall
The antinoise field reduces the original noise field by the process of destructive interference without substantially affecting the motion of the vibrating surface.
The plurality of antinoise fields provides wideband noise reduction in a quiet zone of arbitrary size and shape.
Essentially, this involves using a microphone, placed near the ear, and electronic circuitry which generates an "antinoise" sound wave with the opposite polarity of the sound wave arriving at the microphone.
The invention relates to a sound-proofing wall, comprising several sound-proofing elements (1).
Said noise-abatement wall (10c) consists of a plurality of rows of adjacent self-supporting prefabricated sound-proofing modules (1a) placed on top of one another.
At a given angle of incidence, said waves are no longer immediately reflected back by the sound-proofing wall, hitting the neighboring raised part instead.
The prefabricated sound-proofing modules (1a) in the last row of the noise-abatement wall (10c) are covered by a cap (11) also made of a noise-absorbing sound-proofing material.
An exhaust jet deflecting fence (13) which can also be moved concentrically to the central axis (11) is provided between the rotary table (17) and the sound-proofing wall (1).
A sound shielding device having excellent sound shielding characteristics.
The invention relates to a soundproofing wall (14) with at least one soundproofing element (1).
A noise insulation device (1) for a rail of the present invention comprises a first noise insulation member (2), a second noise insulation member (3), and a fastener (7).
Noise abatement procedures — balloons and powered sailplanes
Noise abatement procedures — aeroplanes, helicopters and powered sailplanes
Anti-noise ability of the combined anti-noise pickup is enhanced more than one times than that of a single pickup, the combined anti-noise pickup has a higher SNR performance even in a high noise environment.
The invention relates to an acrylic glass plate for using as an opaque noise protection element in noise protection walls, said plate measuring a minimum of 2 x 2 m and having a minimum thickness of 8 mm, preferably more than 12 mm.
Vibration-proofing and noise-proofing control of vehicle engines.
The present invention relates to a starter having a stopping noise preventable structure.
The carrier supporting at least two adjacent transparent noise prevention wall elements comprises a point-shaped fixation for the transparent noise prevention wall element.
The present invention is useful in the field of noise abatement walls for roadways, railways, etc.
The present invention relates to a starter having a stopping noise preventable structure.
The sound attenuation composite (10) includes a barrier layer (12) and an open cell foam layer (14) loaded with a sound blocking filler.
The noise barrier can also function as a crash wall.
Provided is a sound-blocking heat-insulating mat assembly that has excellent heat-insulating performance and sound-blocking performance and is easily constructed.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Traduction Translation Traducción Übersetzung Tradução Traduzione Traducere Vertaling Tłumaczenie Mετάφραση Oversættelse Översättning Käännös Aistriúchán Traduzzjoni Prevajanje Vertimas Tõlge Preklad Fordítás Tulkojumi Превод Překlad Prijevod 翻訳 번역 翻译 Перевод