197298 ⎘
Details of active noise control [ANC] covered by but not provided for in any of its subgroups; Means; Physical; Resonators Helmholtz resonators
ACOUSTIC ABSORPTION STRUCTURE COMPRISING A CELLULAR STRUCTURE AND AT LEAST ONE PARTITION TUBE WHICH HAS AT LEAST TWO FLAT SIDES WHICH ARE CONNECTED TO THE WALLS OF THE CELLULAR STRUCTURE
#2HELMHOLTZ RESONATOR, ACOUSTIC METAMATERIAL, ACOUSTIC ABSORBER, SOUND OUTPUT DEVICE AND MICROPHONE
#3ACOUSTIC WAVE ATTENUATOR FOR AN ELECTRONIC DEVICE
#4BROADBAND SOUND ABSORPTION DEVICE USING AREA DIVISION
#5Acoustic wave attenuator for an electronic device
#6Sound absorber unit and wheel with sound absorber device
#7Acoustic direction sensor
#8Broadband sound absorber based on inhomogeneous-distributed Helmholtz resonators with extended necks
#9ACTIVE HELMHOLTZ RESONATOR WITH ACTUATED MEMBRANE
#10VEHICLE WHEEL
#11VEHICLE WHEEL
#12VEHICLE WHEEL
#13Helmholtz resonators with broadband capability
#14Fairings for power generation machines
#15Image forming apparatus and cartridge unit having a helmholtz resonator
#16Damper for gas turbine
#17Ear canal earpiece and earmold unit for an earpiece
#18Active design of exhaust sounds
#19Noise reducing sound reproduction system
#20Loudspeaker system comprising a headrest
#21Sound absorber