The annoyance of different low frequency noise sources was determined and compared to the annoyance from traffic noise. Twenty-two subjects participated in laboratory listening tests. The sounds were presented by loudspeakers in a listening room and the spectra of the low frequency noises were dominated by the frequency range 10 Hz to 200 Hz. Pure tone hearing thresholds down to 31 Hz were also measured. Eighteen normal hearing subjects and four subjects with special low-frequency problems participated in the tests.
References
1.
BuusS.FlorentineM. and PoulsenT. (1997) Temporal integration of loudness and the form of the loudness function, J. Acoust. Soc. Am.1997; 101: 669–680.
2.
HanA.L. and PoulsenT. (1998) Equivalent Threshold Sound Pressure Levels (ETSPL) for Sennheiser HDA 200 earphone and Etymotic Research ER-2 insert earphone in the frequency range 125 Hz to 16 kHz. Scand Audiol1998; 27: 105–112.
3.
IEC 268–13 (1985): Sound system equipment. Part 13: Listening tests on loudspeakers.
4.
ISO 389–7 (1996): Acoustics-Reference zero for the calibration of audiometric equipment-Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions. International Organization for Standardization. Geneva, Switzerland.
5.
MortensenF.R. (1999) Subjective evaluation of noise from neighbours with focus on low frequencies. Main project. Publication no. 53, Department of Acoustic Technology, Technical University of Denmark, DK-2800 Lyngby. ISSN 1395-5985.
