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Overview of the estimated difference in noise generation due to electrification of the propulsion system, red: difference in total A-weighted sound pressure level, green: difference in effective perceived noise level under the assumptions specified in Section 5.1 (positive values indicate a noise increase, negative values a noise reduction). (a) Turboprop; (b) Turbofan with m = 6; (c) Turbofan with m = 10.
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