Source Width of Frontal Phantom Sources: Perception, Measurement, and Modeling

• Autorzy: Frank M.
• Języki publikacji: EN

Abstrakty

EN

Phantom sources are known to be perceived similar to real sound sources but with some differences. One of the differences is an increase of the perceived source width. This article discusses the perception, measurement, and modeling of source width for frontal phantom sources with different symmetrical arrangements of up to three active loudspeakers. The perceived source width is evaluated on the basis of a listening test. The test results are compared to technical measures that are applied in room acoustics: the inter-aural cross correlation coefficient (IACC) and the lateral energy fraction (LF). Adaptation of the latter measure makes it possible to predict the results by considering simultaneous sound incidence. Finally, a simple model is presented for the prediction of the perceived source width that does not require acoustic measurements as it is solely based on the loudspeaker directions and gains.

Słowa kluczowe

EN

source width; phantom source; stereophony; IACC; inter-aural cross correlation coefficient; LF; lateral energy fraction; energy vector

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2013
• Tom: Vol. 38, No. 3
• Strony: 311--319
• Opis fizyczny: Bibliogr. 31 poz., tab., wykr.

Twórcy

autor

Frank M.

• Institute of Electronic Music and Acoustics, University of Music and Performing Arts Graz Inffeldgasse 10/3, 8010 Graz, Austria

Bibliografia

• 1. Barron M., Marshall A.H. (1981), Spatial impression due to early lateral reflections in concert halls: The derivation of a physical measure, Journal of Sound and Vibration, 77, 2, 211-232.
• 2. Blau M. (2002), Difference limens for measures of ap-parent source width, Forum Acusticum, Sevilla, Spain.
• 3. Blauert J., Lindemann W. (1986), Spatial mapping of intracranial auditory events for various degrees of interaural coherence, The Journal of the Acoustical Society of America, 79, 3, 806-813.
• 4. Blauert J., Lindemann W. (1986), Auditory spaciousness: Some further psychoacoustic analyses, The Journal of the Acoustical Society of America, 80, 2, 533-542.
• 5. Blauert J. (1983), Spatial Hearing, MIT Press.
• 6. Blumlein A.D. (1958), British patent specification394,325 (improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems), J. Audio Eng. Soc., 6, 2, 91-98.
• 7. Brookes T., Kim C., Mason R. (2007), An investigation into head movements made when evaluating various attributes of sound, Preprint 7031, 122nd Conv. Audio Eng. Soc., Vienna.
• 8. Cox T.J., Davies W.J., Lam Y.W. (1993), The sensitivity of listeners to early sound field changes in auditoria, Acta Acustica united with Acustica, 79, 1, 27-41.
• 9. Daniel J. (2001), Représentation de champs acoustiques, application à la transmission et la reproduc-tion de scénes sonores complexes dans un contexte multimédia, Ph.D. Thesis, Université Paris 6.
• 10. de Vries D., Hulsebos E.M., Baan J. (2001), Spatial fluctuations in measures for spaciousness, The Journal of the Acoustical Society of America, 110, 2, 947-954.
• 11. Frank M., Sontacchi A. (2012), Performance review of an expert listening panel, [in:] Fortschritte der Akustik, DAGA, Darmstadt.
• 12. Frank M., Sontacchi A., Höldrich R. (2010), Training and guidance tool for listening panels, [in:] Fortschritte der Akustik, DAGA, Berlin.
• 13. Frank M., Marentakis G., Sontacchi A. (2011), A simple technical measure for the perceived source width, [in:] Fortschritte der Akustik, DAGA, Düsseldorf.
• 14. Gerzon M.A. (1992), General metatheory of auditory localisation, [in:] Preprint 3306, 92nd Conv. Audio Eng. Soc., Vienna.
• 15. Hidaka T., Beranek L.L., Okano T. (1995), Inter-aural cross-correlation, lateral fraction, and low-and high-frequency sound levels as measures of acoustical quality in concert halls, The Journal of the Acoustical Society of America, 98, 2, 988-1007.
• 16. ISO (2009), ISO 3382-1:2009: Acoustics – measurement of room acoustic parameters - part 1: Performance spaces.
• 17. ITU (1997), ITU-R BS.1116-1: Methods for the subjective assessment of small impairments in audio systems including multichannel sound systems.
• 18. Kin M.J., Plaskota P. (2011), Comparison of sound attributes of multichannel and mixed-down stereo recordings, Archives of Acoustics, 36, 2, 333-345.
• 19. Mackensen P. (2008), Auditive Localization & Head Movements, Ph.D. Thesis, TU Berlin.
• 20. Martin G., Woszczyk W., Corey J., Quesnel R. (1999), Controlling phantom image focus in a multi-channel reproduction system, [in:] Preprint 4996, 107th Conv. Audio Eng. Soc., New York.
• 21. Morimoto M., Iida K. (2005), Appropriate frequency bandwidth in measuring interaural cross-correlation as a physical measure of auditory source width, Acoustical Science and Technology, 26, 2, 179-184.
• 22. Morimoto M., Maekawa Z. (1988), Effects of low frequency components on auditory spaciousness, Acta Acustica united with Acustica, 66, 4, 190-196.
• 23. Okano T. (2002), Judgments of noticeable differences in sound fields of concert halls caused by intensity variations in early reflections, The Journal of the Acoustical Society of America, 111, 1, 217-229.
• 24. Pulkki V. (1999), Uniform spreading of amplitude panned virtual sources, [in:] IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 187-190.
• 25. Schroeder M.R., Gottlob D., Siebrasse K.F. (1974), Comparative study of european concert halls:correlation of subjective preference with geometric and acoustic parameters, The Journal of the Acoustical Society of America, 56, 4, 1195-1201.
• 26. Simon L.S.R., Mason R., Rumsey F. (2009), Localization curves for a regularly-spaced octagon loudspeaker array, [in:] Preprint 7915, 127th Conv. Audio Eng. Soc., New York.
• 27. Sontacchi A., Pomberger H., Höldrich R. (2009), Recruiting and evaluation process of an expert listening panel, [in:] NAG/DAGA International Conference on Acoustics, Rotterdam.
• 28. Theile G. (1991), On the naturalness of two-channel stereo sound, J. Audio Eng. Soc., 39, 10, 761-767.
• 29. van Dorp Schuitman J. (2011), Auditory modeling for assessing room acoustics, Ph.D. Thesis, Technische Universiteit Delft.
• 30. Wendt K. (1963), Das Richtungshören bei der Űberlagerung zweier Schallfelder bei Intensitäts- und Laufzeitstereophonie, Ph.D. Thesis, RWTH Aachen.
• 31. Zotter F., Frank M., Marentakis G., Sontacchi A. (2011), Phantom source widening with deterministic frequency dependent time delays, [in:] DAFx-11, Paris.