Abstract:
A pneumatic audio system which is compatible with use within an MR1 environment is disclosed. The system has an audio transducer including a housing having a plurality of walls, a foam insert supported within the housing, and a speaker supported by the foam insert and extending at an angle with respect to the walls of the housing. The system further has a hollow tube coupled to the audio transducer at a first end and configured to transmit audio signals from the speaker through the tube. The system further has an earphone coupled to a second end of the hollow tube and configured to deliver audio signals to an ear canal of a human user.
Abstract:
A microphone porting and venting assembly (100) is formed of a remote support substrate (118) providing a (130) acoustically resistive element with dedicated venting cavities (132) along with an external baffle (220) providing acoustic channels (212, 214, 216) which further provide water drainage and external sound sampling points ( 222, 224, 226). The microphone porting and venting assembly (100) is well suited waterproof, noise cancelling microphone systems.
Abstract:
An three-way audio system that uses directional arrays for radiating mid frequency acoustic energy and passive directional devices to radiate the high frequencies. The system includes a left channel, a right channel, and a center channel. A crossover network separates the left channel and the right channel into low frequency content, midrange frequency content, and high frequency content. An omnidirectional acoustical device radiates acoustic energy corresponding to the low frequency content of the combined left channel, right channel and center channel. A first directional array, comprising signal processing circuitry and more than one acoustic driver, radiates acoustic energy corresponding to the midrange content of one of the left channel and right channel signal so that more acoustic energy corresponding to the midrange content of one of the left channel signal and the right channel signal is radiated laterally than in other directions. A first passive directional device, radiates acoustic energy corresponding to the high frequency content of the one of the left channel and right channel signal so that more acoustic energy corresponding to the high frequency content of the one of the left channel signal and the right channel signal is radiated laterally than in other directions.
Abstract:
Es wird ein Verfahren zum Herstellen von akustischen Dämpfungselementen mit einem akustischen Widerstand vorgesehen. Dazu wird mindestens eine Buchse (300) mit einem Loch (310) mit einem Durchmesser (DB) unterhalb eines Basismaterials (100) platziert. Mindestens ein Loch (10) wird in dem Basismaterial (100) durch mindestens einen Stempel (200) mit einem Stempeldurchmesser (DS) gestanzt. Der Stempelvorgang wird an verschiedenen Positionen des Basismaterials (100) wiederholt.
Abstract:
Matrixmaterialen auf Basis nativer Rohstoffe, die mit nativen Fasern zu einem Verbundmaterial kombiniert werden, eignen sich als leichtgewichtige Dämmaterialien für Schallwellen.