Measurement of perceived annoyance due to low frequency content in broad spectrum noises

Authors

  • Qian Cheng Edward Rogers Sr. Dept. of ECE, University of Toronto, 10 Kings College Rd., Toronto, Ont. M5S3G4, Canada
  • Alberto Behar IBBME, University of Toronto, 4 Taddle Creek Rd., Toronto, Ont. M5S3G9, Canada
  • Wong Willy Edward Rogers Sr. Dept. of ECE, University of Toronto, 10 Kings College Rd., Toronto, Ont. M5S3G4, Canada

Keywords:

Computer music, Fourier transforms, Headphones, MATLAB, Noise generators, Power amplifiers, Audiometric cabin, Broad spectrum noises, Noise signals, Phase spectrum

Abstract

The measurement of perceived annoyance due to low frequency content in broad spectrum noises in presented. Test noises were generated artificially for simple control of desired spectra and levels. Noise generation was done via MATLAB by the Inverse Fast Fourier Transform of a random phase spectrum. The noise signals were sent from the computer through Digital Audio Labs CardDeluxe sound card into a Rotel RA-810A power amplifier, and the sound was binaturally produced via AKG K301xtra circumaural headphones, worn by the subject in the IAC Audiometric cabin. The results show that dBA tends to underestimate annoyance in noise with high LF content.

Published

2007-09-01

How to Cite

1.
Cheng Q, Behar A, Willy W. Measurement of perceived annoyance due to low frequency content in broad spectrum noises. Canadian Acoustics [Internet]. 2007Sep.1 [cited 2021Apr.16];35(3):94-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1917

Issue

Section

Proceedings of the Acoustics Week in Canada

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