197197 ⎘
Details of active noise control [ANC] covered by but not provided for in any of its subgroups; Applications Combustion, e.g. burner noise control of jet engines
Assembly constituting an acoustically absorbent material
#2Combustion noise-masking control apparatus and method
#3System for masking vehicle noise and method for the same
#4Method and device for acoustically detecting a malfunction of a motor having an active noise control