Author: D. C. RennisonPublisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Interior Noise Control Prediction Study for High-speed Propeller-driven Aircraft
Author: D. C. RennisonInterior Noise Control Prediction Study for High-speed Propeller-driven Aircraft
Author: Langley Research CenterPublisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 297
Book Description
Analytical Study of Interior Noise Control by Fuselage Design Techniques on High-speed, Propeller-driven Aircraft
Author: Potential Subjective Effectiveness of Active Interior Noise Control in Propeller Airplanes
Author: Clemans A. PowellPublisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 40
Book Description
Active noise control technology offers the potential for weight-efficient interior noise reduction, particularly for propeller aircraft. However, there is little information on how passengers respond to this type of interior noise control. This paper presents results of two experiments that use sound quality engineering practices to determine the subjective effectiveness of hypothetical active noise control (ANC) systems in a range of propeller aircraft. The two experiments differed by the type of judgments made by the subjects: pair comparisons based on preference in the first and numerical category scaling of noisiness in the second. Although the results of the two experiments were in general agreement that the hypothetical active control measures improved the interior noise environments, the pair comparison method appears to be more sensitive to subtle changes in the characteristics of the sounds which are related to passenger preference. The reductions in subjective response due to the ANC conditions were predicted with reasonable accuracy by reductions in measured loudness level. Inclusion of corrections for the sound quality characteristics of tonality and fluctuation strength in multiple regression models improved the prediction of the ANC effects.
Aeroacoustics of Flight Vehicles: Noise control
Author: Harvey H. HubbardPublisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 452
Book Description
NASA Reference Publication
Author: NASA Technical Paper
Author: Sources, Control, and Effects of Noise from Aircraft Propellers and Rotors
Author: John S. MixsonPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 32
Book Description
Advanced Turboprop Project
Author: Roy D. HagerPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 140
Book Description
Author: