Active Noise Control for Aircraft Cabin Seats

In turboprop aircraft, the low-frequency noise field created by propellers is major contributor to interior vibro-acoustic field, which determines a passenger’s discomfort. This paper deals with experimental assessment of an active control (ANC) system for cabin seat headrests using two loudspeakers placed on both sides head create local zone quiet around ears. To deal time-varying disturbances, developed ANC utilized two-input-two-output filtered-X LMS algorithm in MATLAB/Simulink and implemented DSPACE board drive secondary speakers cancel unwanted components. The performance headrest was investigated through real-time experimentation involving sensors, actuators, electronic devices. test results showed that up approximatively 20 dB sound attenuation could be realized ears over narrowband replicated under laboratory conditions. Such achievements represent excellent starting point toward practical applications design more comfortable acoustically efficient aircraft seats.