Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
LOW-PASS ACOUSTIC FILTER BANK BROADBAND SOUND ABSORBER
The type of acoustic absorber comprises a micro-perforated plate, a cavity behind the micro-perforated plate, a slender and curved main acoustic propagation passage communicating with the cavity, and a set of acoustic filters arranged along the main acoustic propagation passage. These acoustic filters have different cut-off frequencies and are arranged in the order of the cutoff frequencies from high to low from the open end to the closed end of the main acoustic propagation passage. The acoustic filter comprises a section of the main acoustic propagation passage and at least one cavity communicating with the main acoustic propagation passage. The type of acoustic absorber is characterized by adopting a main acoustic propagation passage to provide different phase delay for a micro-perforated plate to realize that a micro-perforated plate effectively absorbs broadband acoustic waves, and by combing the close arrangement of main acoustic propagation passage to achieve the ultra-thin structure.
LOW-PASS ACOUSTIC FILTER BANK BROADBAND SOUND ABSORBER
The type of acoustic absorber comprises a micro-perforated plate, a cavity behind the micro-perforated plate, a slender and curved main acoustic propagation passage communicating with the cavity, and a set of acoustic filters arranged along the main acoustic propagation passage. These acoustic filters have different cut-off frequencies and are arranged in the order of the cutoff frequencies from high to low from the open end to the closed end of the main acoustic propagation passage. The acoustic filter comprises a section of the main acoustic propagation passage and at least one cavity communicating with the main acoustic propagation passage. The type of acoustic absorber is characterized by adopting a main acoustic propagation passage to provide different phase delay for a micro-perforated plate to realize that a micro-perforated plate effectively absorbs broadband acoustic waves, and by combing the close arrangement of main acoustic propagation passage to achieve the ultra-thin structure.
LOW-PASS ACOUSTIC FILTER BANK BROADBAND SOUND ABSORBER
AKUSTISCHE TIEFPASSFILTERBANK FÜR BREITBANDSCHALLABSORBER
ABSORBEUR ACOUSTIQUE À LARGE BANDE À BATTERIE DE FILTRES PASSE-BAS
MEI YULIN (Autor:in) / WANG XIAOMING (Autor:in) / WANG YUANXIU (Autor:in)
31.07.2024
Patent
Elektronische Ressource
Englisch
Sound absorber, sound absorber assembly and an engine with a sound absorber assembly
| Europäisches Patentamt | 2016