A review of 34 studies indicates that several factors or variables might be important in providing a psychoacoustic foundation for measurements of the noise from helicopters. These factors are phase relations, tail rotor noise, repetition rate, crest level, and generic differences between conventional aircraft and helicopters. Particular attention was given to the impulsive noise known as blade slap. Analysis of the evidence for and against each factor reveals that, for the present state of scientific knowledge, none of these factors should be regarded as the basis for a significant noise measurement correction due to impulsive blade slap. The current method of measuring effective perceived noise level for conventional aircraft appears to be adequate for measuring helicopter noise as well.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Should Helicopter Noise Be Measured Differently from Other Aircraft Noise. a Review of the Psychoacoustic Literature


    Contributors:

    Publication date :

    1982


    Size :

    90 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English