Re: [AUDITORY] Threshold procedures used to derive current ISO and ANSI norms for thresholds (Thomas Lunner )

Subject: Re: [AUDITORY] Threshold procedures used to derive current ISO and ANSI norms for thresholds From: Thomas Lunner <TLU@xxxxxxxx> Date: Wed, 4 Sep 2013 11:15:50 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY> --_000_88E8BAA88A1E0F4DBBFED034AD0D7B6B0AA16521KBNMXEXC12Deman_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear Ben, Here is answer from prof. Stig Arlinger, Link=F6ping University: Sources for data in ISO 389-1 (1998): [2] WEISSLER, P.G. International Standard Reference Zero for Audiometers, J= . Acoust. Soc. Amer., 44, 1968, pp. 264-275. [3] COX, Jr., J.R. and BILGER, R.C. Suggestion Relative to the Standardizat= ion of Loudness-Balance Data for the Telephonics TDH-39 Earphone, J. Acoust= . Soc. Amer., 32, 1960, pp. 1081-1082. [4] WHITTLE, L.S. and DELANY, M.E. Equivalent Threshold Sound-Pressure Leve= ls for the TDH-39/MX41-AR Earphone, J. Acoust. Soc. Amer., 39, 1966, pp. 11= 87-1188. [5] MICHAEL, P.L. and BIENVENUE, G.R. A comparison of acoustical performanc= e between a new one-piece earphone cushion and the conventional two-piece M= X-41/AR cushion, J. Acoust. Soc. Amer., 67(2), 1980, pp. 693-698. [6] ROBINSON, D.W. A proposal for Audiometric zero referred to the IEC arti= ficial ear, UK National Physical Laboratory, Acoustics Report Ac 85 (1978). [7] ARLINGER, S. Normal thresholds of hearing at preferred frequencies, Sca= nd. Audiol., 11, 1982, pp. 285-286. [8] RASMUSSEN, O. Reference equivalent threshold sound pressure levels for = headphones at one-third octave standard frequencies, Internal Report No. 14= , 1981, The Acoustics Laboratory, Technical University of Denmark, Lyngby. [9] BRINKMANN, K. and RICHTER, U. Determination of the normal threshold of = hearing by bone conduction using different types of bone vibrators, Audiolo= gical Acoustics, 22, 1983, pp. 62-85 and 114-122. [10] BENWELL, D.A. and HUSSEY, R.G. Reference equivalent threshold sound pr= essure levels at 5 and 6.3 kHz using Telephonics TDH Sources for data in ISO389-2 (1994): [1] Wilber, L.A., Kruger, B. and Killion, M.C. Reference thresholds for the= ER-3A insert earphone. J. Acoust. Soc. Amer., 83 (2), 1988, pp. 669-676. 2 [2] Arlinger, S. and Kinnefors, C. Reference equivalent threshold sound pre= ssure levels for insert earphones. Scand. Audiol., 18, 1989,pp. 195-198. [3] Brinkmann, K. and Richter, U. Reference zero for the calibration of pur= e tone audiometers equipped with insert earphones. Acustica, 70, 1990, pp. = 202-207. Since 2009 there is a standard that specifies conditions for obtaining refe= rence data, ISO 389-9 "Acoustics - Reference zero for the calibration of au= diometric equipment - Part 9: Preferred test conditions for the determinati= on of reference hearing thresholds". Best wishes, Stig Arlinger From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx= ILL.CA] On Behalf Of Hornsby, Benjamin Wade Young Sent: 3. september 2013 18:48 To: AUDITORY@xxxxxxxx Subject: Threshold procedures used to derive current ISO and ANSI norms for= thresholds Hi All, I do not have access to ISO documents 389-1 or 389-2 which may provide the = answers or the references needed to answer this question. I'm hoping one of= you may know the answer or direct me to an appropriate reference. Back in the early days (Beasley, 1935, Dadson and King, 1952 and Glorig, 19= 54, 1955) of developing norms for hearing threshold it was shown that norms= varied based on whether the data were collected using "survey" methods (la= rge N but less rigorous screening and less precise threshold measurement me= thods) or a "lab-based" (generally smaller N but more stringent exclusion a= nd more precise method for threshold assessment) to derive threshold (See G= lorig, 1956). My question is: what method was used to derive the current norms? It would = be most helpful if someone could provide the reference(s) for the studies u= sed to determine audiometric zero in the current ISO standards. Thanks much, Ben --_000_88E8BAA88A1E0F4DBBFED034AD0D7B6B0AA16521KBNMXEXC12Deman_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Word 12 (filtered medium)"> <style></style> </head> <body lang=3D"DA" link=3D"blue" vlink=3D"purple"> <div class=3D"WordSection1"> Dear Ben,<o:p></o:p></= span> <o:p> </o:p></spa= n> Here is= answer from prof. Stig Arlinger, Link=F6ping University:<o:p></o:p>= <o:p>&n= bsp;</o:p> Sources= for data in ISO 389-1 (1998):<o:p></o:p> [2] WEI= SSLER, P.G. International Standard Reference Zero for Audiometers, J. Acous= t. Soc. Amer., 44, 1968, pp. 264-275.<o:p></o:p> [3] COX= , Jr., J.R. and BILGER, R.C. Suggestion Relative to the Standardization of = Loudness-Balance Data for the Telephonics TDH-39 Earphone, J. Acoust. Soc. = Amer., 32, 1960, pp. 1081-1082.<o:p></o:p> [4] WHI= TTLE, L.S. and DELANY, M.E. Equivalent Threshold Sound-Pressure Levels for = the TDH-39/MX41-AR Earphone, J. Acoust. Soc. Amer., 39, 1966, pp. 1187-1188= .<o:p></o:p> [5] MIC= HAEL, P.L. and BIENVENUE, G.R. A comparison of acoustical performance betwe= en a new one-piece earphone cushion and the conventional two-piece MX-41/AR= cushion, J. Acoust. Soc. Amer., 67(2), 1980, pp. 693-698.<o:p></o:p> [6] ROB= INSON, D.W. A proposal for Audiometric zero referred to the IEC artificial = ear, UK National Physical Laboratory, Acoustics Report Ac 85 (1978).<o:p></= o:p> [7] ARL= INGER, S. Normal thresholds of hearing at preferred frequencies, Scand. Aud= iol., 11, 1982, pp. 285-286.<o:p></o:p> [8] RAS= MUSSEN, O. Reference equivalent threshold sound pressure levels for headpho= nes at one-third octave standard frequencies, Internal Report No. 14, 1981,= The Acoustics Laboratory, Technical University of Denmark, Lyngby.<o:p></o:p> [9] BRI= NKMANN, K. and RICHTER, U. Determination of the normal threshold of hearing= by bone conduction using different types of bone vibrators, Audiological A= coustics, 22, 1983, pp. 62-85 and 114-122.<o:p></o:p> [10] BE= NWELL, D.A. and HUSSEY, R.G. Reference equivalent threshold sound pressure = levels at 5 and 6.3 kHz using Telephonics TDH<o:p></o:p> <o:p>&n= bsp;</o:p> Sources= for data in ISO389-2 (1994): <o:p></o:p> [1] Wil= ber, L.A., Kruger, B. and Killion, M.C. Reference thresholds for the ER-3A = insert earphone. J. Acoust. Soc. Amer., 83 (2), 1988, pp. 669-676. 2<o:p></= o:p> [2] Arl= inger, S. and Kinnefors, C. Reference equivalent threshold sound pressure l= evels for insert earphones. Scand. Audiol., 18, 1989,pp. 195-198.<o:p></o:p= > [3] Bri= nkmann, K. and Richter, U. Reference zero for the calibration of pure tone = audiometers equipped with insert earphones. Acustica, 70, 1990, pp. 202-207= .<o:p></o:p> <o:p>&n= bsp;</o:p> Since 2= 009 there is a standard that specifies conditions for obtaining reference d= ata, ISO 389-9 “Acoustics – Reference zero for the calibration = of audiometric equipment – Part 9: Preferred test conditions for the determination of reference hearing thresholds”.<o= :p></o:p> <o:p>&n= bsp;</o:p> Best wi= shes,<o:p></o:p> Stig Ar= linger<o:p></o:p> <o:p>&n= bsp;</o:p> <div> <div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm = 0cm 0cm"> From: AUDITORY - Research in Auditory Perception [mailto:AU= DITORY@xxxxxxxx On Behalf Of Hornsby, Benjamin Wade Young Sent: 3. september 2013 18:48 To: AUDITORY@xxxxxxxx Subject: Threshold procedures used to derive current ISO and ANSI no= rms for thresholds<o:p></o:p> </div> </div> <o:p> </o:p> Hi All,<o:p></o:p> I do not have access to ISO doc= uments 389-1 or 389-2 which may provide the answers or the references neede= d to answer this question. I’m hoping one of you may know the answer = or direct me to an appropriate reference.<o:p></o:p> <o:p> </o:p> Back in the early days (Beasley= , 1935, Dadson and King, 1952 and Glorig, 1954, 1955) of developing norms f= or hearing threshold it was shown that norms varied based on whether the da= ta were collected using “survey” methods (large N but less rigorous screening and less precise threshold measuremen= t methods) or a “lab-based” (generally smaller N but more strin= gent exclusion and more precise method for threshold assessment) to derive = threshold (See Glorig, 1956).<o:p></o:p> <o:p> </o:p> My question is: what method was= used to derive the current norms? It would be most helpful if someone coul= d provide the reference(s) for the studies used to determine audiometric ze= ro in the current ISO standards.<o:p></o:p> <o:p> </o:p> Thanks much,<o:p></o:p><= /p> <o:p> </o:p> Ben <o:p></o:p> <o:p> </o:p> </div> </body> </html> --_000_88E8BAA88A1E0F4DBBFED034AD0D7B6B0AA16521KBNMXEXC12Deman_--

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