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Overall loudness of short time-varying sounds

Schlittenlacher, Josef; Hashimoto, Takeo; Kuwano, Sonoko; Namba, Seiichiro; (2015) Overall loudness of short time-varying sounds. In: Davy, J, (ed.) Proceedings - 43rd International Congress and Exposition on Noise Control Engineering (Internoise 2014). Australian Acoustical Society (AAS): Melbourne, Australia. Green open access

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Abstract

When predicting the overall loudness of time-varying sounds, it is necessary to use a function which calculates an overall value based on instantaneous loudness. Although N5 and LL(P) correlate for many sounds, their concepts are rather different. N5 is the loudness which is exceeded in five percent of the time, thus it is an ordinal value. LL(P) is the energetic mean of all instantaneous loudness values. For the present set of experiments, sounds with orthogonal conditions were chosen. This means they vary in N5 in a dynamic range of about 30 phon but have constant loudness according to LL(P) or vice versa. Participants judged the overall and instantaneous loudness of the sounds with ten seconds duration by magnitude estimation using line length and continuous judgment. The results show that LL(P) has some advantages compared to N5. In contrast to N5, it correlates highly with the overall loudness for the present set of stimuli.

Type: Proceedings paper
Title: Overall loudness of short time-varying sounds
Event: 43rd International Congress and Exposition on Noise Control Engineering (Internoise 2014)
Location: Melbourne
Dates: 16 Nov 2014 - 19 Nov 2014
ISBN-13: 9781634398091
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.acoustics.asn.au/conference_proceeding...
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Loudness, Time-varying sound
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Speech, Hearing and Phonetic Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10181603
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