READ ME File For Structural actuator array experiments

Dataset DOI: 10.5258/SOTON/D1614

ReadMe Author: Nikolaos Kournoutos, University of Southampton 

This dataset supports the thesis entitled "Design of Electric Vehicle Warning Sound Systems to Minimise Drive-by Noise"
AWARDED BY: University of Southampton
DATE OF AWARD: 2020

The data contained in this dataset is also in support of the following published articles:
1. N. Kournoutos and J. Cheer, “A system for controlling the directivity of
sound radiated from a structure,” Journal of the Acoustical Society of America,
vol. 147, pp. 231-241, 2019. https://doi.org/10.1121/10.0000589

2. N. Kournoutos and J. Cheer, “Investigation of a directional warning sound
system for electric vehicles based on structural vibration,” Journal of the
Acoustical Society of America, vol. 148, pp. 588-598, 2020. https://doi.org/10.1121/10.0001681

DESCRIPTION OF THE DATA
The deposited data regards the measured sound pressure generated during the validation experiments of the structural actuator array, from the prototype system and the system as installed in the bumper of a test vehicle.

The files are in .mat format, generated and opened with MATLAB. 

The data corresponds to sound pressure measurements taken from 20 microphones arranged in a circle centred around the investigated sound source. 

The first column corresponds to the microphone positioned at zero degrees, and the consecutive columns at microphones placed at an 18 degree increment on the circle. 

For the ISVR measurements the circle radius is 2.8 m, for IDIADA measurements the radius is 5 m.

In all measurements the test signal was a sinewave sweep from 10 Hz to 10 kHz. The sample rate is 25600 samples/second.

Naming convention indicates the instance of the measurement (ISVR -> measurements of the prototype in the anechoic chamber of the ISVR, IDIADA -> measurements of the system installed in a vehicle, in the semi-anechoic chamber of Applus+IDIADA). The second part of the labels indicates the orientation of the sound field, fwd -> forward, 36d -> steered by 36 degrees etc.

Date of data collection: 2019_02_12 - 2019_03_25

Information about geographic location of data collection: University of Southampton, United Kingdom

Licence: ODC-By https://opendatacommons.org/licenses/by/


Date that the file was created: November, 2020