*** Data and code for the psychoacoustic assessment of electric aviation noise ***
Authors: Bieke von den Hoff, Josephine Pockele, Renatto Yupa-Villaneuva, Roberto Merino-Martinez

Aircraft Noise and Climate Effects Group, Faculty of Aerospace Engineering, Delft
University of Technology

Contact Information:
r.merinomartinez@tudelft.nl
Delft University of Technology - Faculty of Aerospace Engineering

***General Introduction***
Sample noise measurements of a Pipistrel Velis Electro and a Pipistrel Virus as measured during fly-overs at Teuge International Airport, were assessed by participants in a listening experiment to understand the perceived annoyance between the electric and the non-electric (general combustion) version of the aircraft.

The listening experiments were performed in PALILA, the psychoacoustic listening facility of Delft University of Technology.
Participants were asked to rate annoyance on a scale of 1 - 10 after listening to a specific sound file. Each participant received a different order of sound files.

***Purpose of the test campaign***
Collect perceived annoyance responses of participants in a listening experiment.

***Test equipment***
PALILA, described in https://iiav.org/content/archives_icsv_last/2023_icsv29/content/papers/papers/full_paper_274_20230331114441190.pdf

***Description of the files**
1. 'ResponsesExperimentBiekevondenHoff.mat' contains the (fully anonimised) responses of the participants to the general questions and to the questions related to the research of Bieke von den Hoff (not those of other researchers)
2. 'process_responses.m' is the code that was used to create the figures based on the listening experiments in the chapter. This is with the exception of the p-values of the two-tailed paired t-test which were created with a private code of prof.dr. D.G. Simons.
3. 'Audio samples for the listening experiment.zip' contains the wav-files that were used in the listening experiment and that correspond to the questions in the responses.
    The files are named as 'Flyover_[aircraft]_[repeat]_calibrated'
    - 'calibrated' indicates that all files were calibrated and corrected to a maximum allowable hearing threshold. 
    - [aircraft]-field can be 'Velis' which is the electric version, or 'Virus' which is the conventional engine version.
    - [repeat]-field contains whether it was measurement 1, 2, or 3.