Preliminary study on the estimation of just noticeable differences of spectral dips and peaks by adaptative method

The presented work is intended to supportthe evaluations and decisions on taking or discarding possible measures to improve acoustical situations, by assessing the audibility of moderate to small spectral changes. The approach is based on listening tests in which pink noisebasedsounds with and without spectral peaks and widths with variable contrast and width are presented.Throughout the test, the degree of contrast is varied adaptively in a 1dB, 3dB up scheme.The test results are found to be consistent with earlier work, the main conclusions being that peaks around 125Hz are slightly less noticeable than around 2000Hz and that around 2kHz peaks are easier to detect than dips. For the majority of participants, the contrast oscillation during the adaptive tests varied between 1dB and 4dB both for dips and peaks around 2kHz.

ISBN:9781713827054

Publication year:2020

BOF-keylabel:yes

IOF-keylabel:yes

Authors from:Higher Education

Accessibility:Closed