Thank you. At the moment we are focused on basic auditory perception: measuring equal-loudness-level contours very low in frequency, in great detail. This may be considered a starting point for developing new tools for the assessment of LF-noise problems. A potential outcome is also to relate perception with specific properties of the ear, thought to occur in this particular range. Such relation may have gone unnoticed due to a lack of systematic measurements and data analysis, amongst other factors.