HYBRID ACTIVE NOISE REDUCTION DEVICE FOR REDUCING ENVIRONMENTAL NOISE, METHOD FOR DETERMINING AN OPERATIONAL PARAMETER OF A HYBRID ACTIVE NOISE REDUCTION DEVICE, AND PROGRAM ELEMENT

摘要

A hybrid active noise reduction device for reducing environmental noise is provided, the device (500) comprising a microphone (102) for receiving a noise signal (118) and for transmitting a microphone signal (122), a filter unit (114) for receiving the microphone signal (122) and for transmitting a filtered microphone signal (514), the filter unit (114) comprising a low- latency filter part (501) and a high- latency filter part (112), the low- latency filter part (501) and the high- latency filter part (112) being arranged in series to one another, and a loudspeaker (110) for transmitting a noise reduction signal (120) based on the filtered microphone signal (514). A bypass line (505) is arranged in parallel to the high- latency filter part (112) to add the outputs of the low-latency filter (501) and the high-latency filter part (112).