Tiêu chuẩn iso 00389 2 1994 scan

I S0 I N TE RN ATI ON AL S TAN D ARD 89- Fi rst ed i t i on 9 4- 7- l Acou st i cs cal i brati on Part Ref eren ce of z ero au d i omet ri c for the eq u i pm en t - 2: Ref eren ce eq u i val en t pres su re l evel s for t h resh ol d pu re t on es sou n d an d i n sert e arph on e s Acou s t i q u e - Z&o au d i o m bri q u es Part i e 2: d e r6f h en ce N i veau x d e rkf kren ce l i mi n re po u r po u r M t al o n n ag e d ’ d q u i pem en t s - l es &ou t eu rs Eq u i val en t s d e pressi on ~4 s o n pu rs et acou st i q u e B i n sert i on Re f ere n ce I S0 n u m be r 8 : 9 4( E ) I S0 389- Z: 994( E) Foreword I S0 ( th e I n tern ati on al fed erati on of of prepari n g tech n i cal wh i ch Org an i zati on n ati on al st an d ard s I n tern ati on al commi t t ees a tech n i cal represen ted Each ( I EC) on al l Draft cl osel y mat ters I n tern ati on al ci rcu l ated to th e in h as of th e St an d ard s St an d ard requ i res bod y approval a ou t in h as worl d wi d e Th e work t h rou g h a su bj ect the org an i zati on s, I SO, al so t ake I n tern ati on al ri g h t to I S0 for be g overn men t al part i n th e El ectrotech n i cal work I S0 Commi ssi on stan dard i zati on ad opt ed bod i es carri ed est abl i sh ed is bodi es) i n terested I n tern ati on al el ectrotech n i cal m em ber m em ber n ormal l y been l i son wi th wi th Stan d ard i zati on ) ( I S0 is m em ber commi tt ee an d n on - g overn men t al , col l aborates St an d ard s commi t t ee on th at for bod i es by for voti n g the tech n i cal commi t t ees Pu bl i cati on as an by at l east 75 % of th e m em ber are I n tern ati on al bod i es casti n g a vote I n tern ati on al l SO/TC 43, I S0 - 389 St an d ard si sts Referen ce - - Part I: t on es Part 2: - - - Referen ce I S0 t on es u n d er th e au d i ometri c th resh ol d Commi t t ee g en eral ti tl e Acou sti cs eq u i pmen t : sou n d pressu re l evel s for th resh ol d sou n d pressu re l evel s for earph on es equ i val en t i n the l evel s th resh ol d force test equ i val en t l evel s th resh ol d maski n g sou n d ran g e kH z to equ i val en t si g n al s of Referen ce for n arrow- ban d freq u en cy Referen ce reserved for pu re ton es sh ort th resh ol d th resh ol d n oi se pressu re l evel s for l evel s for 76 kH z sou n d pressu re du rati on of h eari n g u n d er free- fi el d an d di ffu se- di ti on s U n l ess ot h erwi se or u ti l i zed i n an y form mi crofi l m, wi t h ou t I n tern at i on al Cas e ii Tech n i cal 994 Al l ri g h t s Pri n ted by vi brators Parr 5: Part 7: of equ i val en t Referen ce fi el d l i sten i n g prepared parts, equ i val en t an d i n sert Referen ce Part 6: fol l owi n g Referen ce acou sti c - was th e cal i brati on Part 4: pu re 389- an d su pra- au ral earph on es t on es Part 3: th e for Referen ce an d bon e - of zero pu re pu re I S0 Acou sti cs permi ssi on Org an i zat i on Post al e 56 speci fi ed , or by an y mean s, l i n Swi t zerl an d i n wri ti n g for CH - 21 n o part of th i s el ect ron i c from the pu bl i sh er St an d ardi zat i on G en eve 20 l pu bl i cat i on or mech an i cal , Swi t zerl an d may be reprod u ced i n cl u di n g ph ot ocopyi n g an d I S0 Part I S0 wi l l An n exes be a re- i ssu e of A an d B of th i s I S0 part 389- 2: 994( E) 389: 991 of I S0 389 are for i n formati on on l y I S0 399- 2: 994( E) I S0 I ntrodu cti on Each part of zero for re- i ssu ed as sou n d of I S0 pressu re pattern s I S0 I n som e sert in to is to wi th an of pu re t on es arti fi ci al wi th ear an be pattern s acou sti c formi n g (to th resh ol d speci fi ed earph on es n arrow- ban d referen ce 389: 991 eq u i val en t an d t wo su pra- au ral l evel s for a speci fi c I S0 referen ce j u n cti on oth er occl u si on of are recog n i zed th e th at ei th er effect d ata most smal l l evel pattern s it may, th e test i n th i s cou pl er of speci fi ed to I EC 31 maski n g n oi se based by of be desi rabl e or th e effects part provi d ed I S0 maski n g d i fferen ces earph on e, m ay i e u se i n- e g th ese 389 i s based on di fferen t cou n - l aboratori es obt n ed to n oi se, RETSPL d ata for rel i abl e d ata avai l abl e at th e measu remen t s of h owever, si g n al or i n terau ral speci fi ed tech n i cal represen t i n g u si n g di fferen t appl i cati on s del i ver earph on e h eari n g th resh ol d iv for referen ce au di ol og i cal assessmen t tri es in speci fi es eq u i pmen t RE TSPL data red u ce t h e of u sed an d j u n cti on 389 val u es l evel s ( RETSPL) for I EC 303, I S0 au d i omet ri c tai n s earph on es earph on es ki n d s St an d ard of 389- l ) 389- speci fi es on th ese It cal i brati on su pra- au ral formi n g to i n tern ati on al th e occu r It in an ti me bet ween by au d i ometri c su pra- au ral or i n sert resu l ts of eq u i pmen t earph on es I N TERN ATI ON AL STAN D ARD Acou st i cs I S0 zero eq u i pmen t for th e cal i brati on pu re equ i val en t t on es an d th resh ol d i n sert sou n d pressu re part I EC 71 : 981 , of th resh ol d cal i brati on t h ose th i s of I S0 of pu re- t on e I S0 a pattern in referen ce l evel s eq u i val en t ( RETSPL) au d i omet ers I S0 i n cl au se for Occl u d ed - ear an d g i ven is N ormat i ve Th e t h rou g h of th i s to referen ce part of edi ti on s of an d I S0 possi bi l i ty of in I S0 i n di cated revi si on , part st an d ard s g i ven in Defi n i ti on s For th e n i ti on s were are appl yi n g st an d ard s i n di cated mai n tai n reg i sters the to sti tu te of most bel ow wh i ch , provi si on s pu bl i cati on , to recen t M em bers cu rren tl y based on th i s i n vesti g ate th e edi ti on s of val i d of I EC an d th e l owi n g ear N OTE th e Acou st i cs cal i brati on - of I S0 St an d ard pu re- t on e referen ce r zero d u ct i on l ed ) to To /EC of referen ce h eari n g th e ear by m ean s be Th i s d evi ce rei ssu ed as I S0 d s of cou pl er u si n g for earph on es ear i n serts Devi ce part of I S0 389, tog et h er u sed to an earph on e may wi t h i n sert ear can al be, or for wi t h ou t n al earph on e: by n ect i n g th e wi th defi - the fol - provi d e an d th e exampl e, an a n ect i n g th e acou sti c ear can al earmou l d or a t u be Th e m ean s el emen t ear Smal l earph on e cou pl ed of an wh i ch i n sert ear i n sert, i s i n serted m ay be a to th e or att ach ed i n to part of th e to a ear ca- the i n sert th e ou tpu t earph on e ear si mu l ator: pressu re l oadi n g th e cou p- the an in essen ti al l y an d a to at th e th e for speci fi ed a pri n ci pal cal i brated is u n d er wel l - defi n ed freq u en cy cavi ty, pressu re so ran g e acou sti c mi croph on e ch osen mi croph on e sou n d measu ri n g earph on e a of mi croph on e pressu re mat el y Devi ce of di ti on s si sts of measu remen t i n sert: n et works au di 0meters l ’ ; EC 26: 973, th i s 389: 991 appl y bet ween si mi l ar 3 389: 991 , of I S0 defi n i ti on s sou n d for in I n tern ati on al St an dard s I S0 th e ear by ear th e st an d ard s are su bj ect en cou rag ed of provi si on s ag reemen t s the for th e an n ex B t i me val i d Al l parti es 389 text, At pu rposes g i ven cou pl i n g tai n th i s 389 to referen ces fol l owi n g si mu l ator cou pl ed i n serts earph on es in i n sert earph on es i n formati on , a n ote on th e deri vati on of th e a bi bl i og raph y of th e referen ce val u es an d th e ori g i n of t h e d at a i n pu t i s g i ven i n an n ex A, for su ppl emen tary 389: 991 l ) Val u es 89 are appl i cabl e to speci fi ed For speci fi es pressu re speci fi ed part of N OTE 389 sou n d l evel s earph on es measu remen t to of - Scope Th i s 389- 2: 994( E) 2: Ref eren ce I S0 Referen ce - au d i omet ri c Part Th e th at th e correspon d s exi sti n g at th e It l oad l ocati on sou n d approxi h u m an eard ru m 388- l I S0 389- 2: 994( E) occl u d ed - ear si mu l ates th e si mu l ator: i n n er of an ear i n sert to part th e of Ear the si mu l ator wh i ch ear can al , from th e ti p eard ru m i n tern al d i ameter l en g th th e of f oam ( n omi n al N OTE3 An occl u d ed - ear si mu l ator is speci fi ed in I EC 71 1 sert ear- i n sert earmou l d tran ce si mu l ator) : of of sou n d th e of ear si mu l ator th rou g h acou sti c speci fi ed cal i brati on cou pl er an wh i ch an d provi d es on for the en - passag e earph on es: in is Cavi ty u sed for j u n cti on measu re th e An i n sert sou n d a en d be of th e earph on e the i n- a n omi n al n omi n al bet ween l en g th to wi th of n i ppl e n omi n al ear i n sert tu be an d en d effecti ve th e en d ou tpu t of ( see i n sert sh al l th at th e ou ter en d si d e t h e en t ran ce of of i n serted th e th e earti p i n to is the ear mm to can al mm so i n- ear can al Speci fi cat i on s referen ce eq u i val en t ( RETSPL) for th resh ol d earph on es sou n d as pressu re speci fi ed in earph on es i s cl au se 4, in I EC 71 , an in acou sti c an cou pl er occl u ded - ear are g i ven formi n g si mu l ator to formi n g i n tabl e earph on e Th i s part type Etymoti c I S0 389 appl i es to Research ER3 A, ear by ear i n serts N OTE5 th e measu red Th ese val u es appl y wh en of t u be ) I EC 26 an d of mm th e ear to Type a sou n d vi a a sou n d as effecti ve the press- speci fi ed i n I EC 26 of n omi n al , mm, n ect s of Th e Th e for an d en d a bet ween the wi th cavi ty acou sti c cou pl er th e ou tpu t mm, an d measu red d i ameter n i ppl e 240 n i ppl e fi g u re an d d i amet er of l evel s N OTE4 Th e earph on e l en g th th e earti p , mm as occl u d ed - ear i ts axi s wh i ch earph on e to or th e i n sert an d vol u me i n sert su bsti tu te, termi n ates cou pl er for mi croph on e th e ( earmou l d an open i n g sh ape of a cal i brated u re wi th i n I n sert i n to th e acou sti c si mu l ator si mu l ator of mm, i n tern al mm) i n tern al 22 I S0 of type i n sert cou pl ed earph on es to t h e of h u m an ER- 3- I n sert earph on esof t ype E ARTON E A are i n al l rel evan t aspects i den ti cal to ER- A i n sert earph on es Ear i n serts of type ER- 3- 4are al so offered as EARLI N K A ear i n sert earph on e an d to th e fi g u re i vel y, by l en g th m ean s of pl asti c n ecti n g ou tpu t to an d to th e or tu bi n g ear mm n i ppl e of th e acou sti c cou pl er i n accord an ce I EC 71 : 981 , el emen t s th e be 251 sou n d t u be si mu l ator I EC 26: 973 of th e d etermi n ed th e fl u sh occl u d ed - ear of earph on e i s fi xed Th e total bet ween i n sert wi th respecteffecti ve th e si mu l ator i n sert i s t h en ( see fi g u re2) i n serts N OTE Th e ear i n sert si sts d i amet er It of tai n s mm an of a f oam earti p wi th an d i n tern al a n omi n al pl asti c l en g th tu be wi th a n omi n al In th e case of au d i omet ers fi tted wi th earph on es oth er th an th at d escri bed i n cl au se 4, of mm ced u re g i ven i n A 2 of a n omi n al d et ermi n e correspon d i n gRETSPL val u es i n sert th e pro- I S0 369: 991 sh ou l d be u sed to I S0 389- 2: 994( E) Di men si on s ER- A Sou n d tu be mi l l i met res earphone tube Sou n d i nsert in - ni ppl e Foam earti p ER- 3- Fi g u re - An ER- 3- ear i n sert an d i ts ear cou pl i n g i nsert to an ER3 A i n sert earph on e I S0 389- 2: 994( E) Di men si on s ER- A i n sert in mi l l i met res earphone , Sou n d tube Occl u ded- ear a) Fi g u re - Acou st i c Cou pl i n g of sl mu l at or - b) cou pl er th e i n sert earph on e to th e acou sti c cou pl er or Occl u ded- ear to th e si mu l ator occl u d ed - ear I S0 si mu l ator Q I S0 I S0 Tabl e - pressu re to Referen ce l evel s in I EC 26 an d an in eq u i val en t acou sti c an occl u d ed - ear formi n g Frrq u en cy th resh ol d cou pl er to sou n d formi n g si mu l ator I EC 71 RETSPL (ref Hz 20 pPa1 l ) dB Occl u d ed - ear Acou st i c cou pl er si mu l at or ( I EC 261 ( I EC 71 I ) 25 26 28, 602) 22, 24, 2002) 8, 21 250 4, 7, 31 2, 5, 4002) 30 500 5, 630 4, o 7#5 750 280 60 5, 80 021 85 000 a0 55 250 zo 83 500 1 6002’ 200 000 1 ,5 2500 5, O 3000 3, 3 502) 000 55 5, 5000 5, O 8, 000 6, 300 zo 6, 000 a0 5, ) Val u es are 2) Val u es for rou n d ed t h ese to n earest freq u en ci es h al fdeci bel are d eri ved by i n t erpol ati on 389- 2: 994( E) I S0 Q I S0 389- 2: 994( E) An n ex A (i nformati ve) N ot es Th e RETSPL val u es i men tal More Th e Th e detai l s i n sert ati on s speci fi ed i n vesti g ati on s of on test th resh ol d su bj ect’ s RETSPL d ata were n u mbers of i n th i s th e part commu n i cat ed measu remen t earph on e th e on to met h od s deri vati on of I S0 an d test d at a u sed i n th e h eari n g th resh ol d d eri ved 389 l SO/TC 43, by averag i n g were of obtai n ed Acou sti cs su bj ect s the d at a of from Bri ef are g i ven d evel opmen t l evel s from RETSPL of d B, th e th e part of th e referen ces of I S0 as measu red th ree resu l ts parti cu l ars i n th e th i s val u es 89 wi th th e i n vesti g ati on s of th ree tests q u ot ed were i n d epen d en t are g i ven i n an n ex n ot wi th ou t B corrected referen ce exper- i n tabl eA l for devi - earph on e wei g h ti n g for di fferen t su bj ects Tabl e A - I n vesti g ati on s of RETSP L val u es I n vesti g ati on s Test d ata Ref [l ] Ref [3] Ref [2] Type of test earph on e E RSA i n sert earph on econ formi n g to cl au se Measu remen t met h od H eari n g th resh ol d t ech n i q u e Referen ceearph on e u sed to veri fy n ormal h eari n g of test su bj ects Tel eph on i cs Tel eph on i cs Beyer TDH - 39 TDH - D T 48 N u mber of ears tested 56 36 48 N u m ber of su bj ects 28 23 Type of referen ce earph on e Freq u en ci estested, i n h ertz H eari n g th resh ol d l evel s of test su bj ects Type of cou pl er u sed for i n sert earph on e 250, 500, 000, 000, 25, 250, 000, 000, 000, 00 500, 000, 000, 000, 000, 00 25, 250, 31 5, 500, 630, 750, 000, 250, 500, 000, 500, 000, 000, 300, 00 000, 000, ~ d B at an y test freq u en cy bel ow 00 H z an d ~ d B at test freq u en ci es of 00 H z an d above I EC 26: 973, fi g u re I EC 26: 973, fi g u re I EC 26: 973, fi g u re I EC 71 : 981 , fi g u re I EC 71 : 981 , fi g u re Q I S0 I S0 An n ex 389- 2: 994( E) B (i nformati ve) Bi bl i og raph y [l ] WI LBE R, L A , eren ce earph on e pp [2] KRU G E R, B an d th resh ol ds J for Acou st KI LLI ON ,M C th e Sot ER3 A Amer , 83 Ref- [4] i n sert (21 , 988, ARLI N G ER,S i n sert pp an d earph on es 95- l KI N N EFORS, C th resh ol d sou n d Stan d Referen ce pressu re Au di o/ , l evel s 8, [5] for 2) the RI CH TER, U for of th e cal i brati on eq u i pped wi th 990, 202- 207 pp arti cl e resu l t s of is a on e st u d i es 3) To be Part 4: 989, Acou sti cs of Referen ce - Referen ce au d i ometri c l evel s for zero eq u i pmen t n arrow- ban d for - mask- n oi se I EC 303: 970, th e /EC provi si on al cal i brati on of referen ce earph on es cou pl er u sed in au d i omet ry 98 BRI N KM AN NK , an d Th i s cal i brati on for [6] [S] 3894: - - 3’ , th e i ng 669- 676 2’ equ i val en t I S0 pu bl i sh ed i n sert compi l at i on st u d y on l y pu re Referen ce ton e earph on es the resu l t s ( Wi l ber, of 986) zero of fi ve cou l d /EC arti fi ci al cal i brati on for of ear, of th e wi d e- earph on es u sed 70, experi men t al be An th e type, i n au d i omet ry au d i omet ers Acu sri ca, I EC 31 8: 970, ban d t aken i n to st u d i es For the accou n t due to pu rposes devi at i n g of t est thi s part of d i t i on s I S0 389, u sed in h owever, the ot h er I S0 I CS 40 00 Descri pt ors: Pri ce 389- 2: 994( E) based acou st i cs, on pag es au d i omet ry, au d i omet ers, cal i brati on , au di t ory t h resh ol d , referen ce d at a I S0