@article{Nakashima_Hodgson_2003, title={Investigation of dash-8 run-up noise characteristics for local active noise control}, volume={31}, url={https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1554}, abstractNote={The measured narrow-band and 1/3 octave band spectra were calculated and analyzed in order to determine the blade-passing frequencies (BPF) and noise directivities for three different engine settings. Thus decibel subtraction of the idling engine spectra from the 50% engine power spectra was performed to estimate the power spectra of a single engine. The results were compared to determine if and how an ANC system must be changed to obtain the best noise attenuation for the different run-up conditions.}, number={3}, journal={Canadian Acoustics}, author={Nakashima, Ann and Hodgson, Murray}, year={2003}, month={Sep.}, pages={70–71} }