Tiêu chuẩn iso 00389 2 1994 scan

I S0

I N TE RN ATI ON AL
S TAN D ARD

3 89- 2
Fi rst

ed i t i on

1 9 9 4- 0 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 ai 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

3 8 8 2 : 1 9 9 4( E )

5


I S0

389- Z:

1 994( 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 ai 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

con 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 8 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-

con 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

1 994

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

0

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- 2

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 - 1 21 1

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


0

I S0

Part 1

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: 1 994( E)

389: 1 991 .

of

I S0

389

are for

i n formati on

on l y.


I S0

0

399- 2: 1 994( 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

con formi n g

(to

th resh ol d

speci fi ed

earph on es

n arrow- ban d

referen ce

389: 1 991

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

con 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 8.

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 ai 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

con 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

con tai n s

earph on es

earph on es

ki n d s

St an d ard

of

389- l )

389- 4 speci fi es

on th ese

It

cal i brati on

su pra- au ral

con 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 1 : 1 981 ,

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

3

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

con 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
ai r

zero

con d u ct i on

3. 2

l ed

1 )

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

ai 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

con n ect i n g

th e

wi th

defi -

the

fol -

provi d e

an d th e

exampl e,

an

a con 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

con di ti on s

con si sts

of

measu remen t

i n sert:

n et works

au di 0meters. l ’

; EC 1 26: 1 973,

th i s

389: 1 991

appl y.

bet ween

2

si mi l ar

3. 3

389: 1 991 ,

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

con tai n

th i s

389.

to

4.

referen ces

fol l owi n g

si mu l ator

cou pl ed

i n serts.

3. 1

2

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: 1 991 l ) . Val u es

3 89 are appl i cabl e to

speci fi ed

For

1

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: 1 994( E)

2:

Ref eren ce

1

I S0

Referen ce

-

au d i omet ri c

Part

0

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 .

1


I S0

389- 2: 1 994( E)

3. 4

occl u d ed - ear

si mu l ates

th e

0

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 .

1 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

con 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

2 mm

to

can al
3

mm

so
i n-

ear can al .

5

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 1 ,

an
in

acou sti c

an

cou pl er

occl u ded - ear

are g i ven

con formi n g

si mu l ator

to

con formi n g

i n tabl e 1 .

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

1 ).

I EC 1 26 an d

of

2 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 1 26.

4

of

n omi n al

1 , 9 mm,

con 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

1 , 9 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

3. 6

si mu l ator

of

mm,

i n tern al

mm) .

i n tern al
3. 5

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- 1 4.

I n sert earph on esof t ype E ARTON E
3 A are i n al l

rel evan t aspects i den ti cal to

ER- 3 A i n sert earph on es. Ear

i n serts of type ER- 3- 1 4are al so offered as EARLI N K
3 A ear

i n sert

earph on e

an d to

th e

fi g u re

2

i vel y,

by

l en g th

m ean s

of

pl asti c

con 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 1 : 1 981 ,

el emen t s

th e

be 251

sou n d t u be

si mu l ator

I EC 1 26: 1 973

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 6
Th e ear i n sert con si sts
d i amet er
It

of

con tai n s

1 3 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

1 2 mm.

ced u re g i ven i n A. 2. 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: 1 991 sh ou l d be u sed to


I S0

389- 2: 1 994( E)

Di men si on s

ER- 3 A

Sou n d

tu be

mi l l i met res

earphone

tube

0

Sou n d

i nsert

in

1 .9

-

ni ppl e

Foam earti p
ER- 3- 1 6

Fi g u re

1

-

An

ER- 3- 1 4 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

3

I S0

0

389- 2: 1 994( E)

Di men si on s

ER- 3 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

2

-

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

1

-

pressu re
to

Referen ce
l evel s

in

I EC 1 26 an d

an
in

eq u i val en t
acou sti c

an

occl u d ed - ear

con formi n g

Frrq u en cy

th resh ol d

cou pl er

to

sou n d

con formi n g
si mu l ator

I EC 71 1

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 1 261

( I EC 71 I )

1 25

26. 0

28, 0

1 602)

22, 0

24, 5

2002)

1 8, 0

21 . 5

250

1 4, 0

1 7, 5

31 5

1 2, 0

1 5, 5

4002)

1 3. 0

30

500

5, 5

9. 5

630

4, o

7#5

750

280

60

5, 5

80 021

1 85

1

000

a0

55

1

250

zo

83

500

2. 0

9. 5

1
1

6002’

200

9. 5

2 000

3. 0

1 1 ,5

2500

5, O

1 3. 5

3000

3, 5

1 3. 0

4. 0

1 3. 0

3

1 502)

4 000

55

1 5, 0

5000

5, O

1 8, 5

6 000

2. 0

1 6, 0

6 300

zo

1 6, 0

8 000

a0

1 5, 5

1 )

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 .

1

389- 2: 1 994( E)


I S0

Q I S0

389- 2: 1 994( 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

0 d B,

th e

th e

part

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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

3 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. 1

-

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 4

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 - 3 9

D T 48

N u mber of ears tested

56

36

48

N u m ber of su bj ects

28

1 8

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, 1 000, 2 000,

1 25, 250,

3 000, 4

3 000, 4

000, 8

00 0

500, 1 000, 2 000,

000, 6 000, 8

00 0

1 25, 250, 31 5, 500, 630,
750, 1

000, 1 250, 1

500,

2 000, 2 500, 3

000, 4

5 000, 6

300, 8 00 0

000, 6

000,

~ 1 0 d B at an y test freq u en cy bel ow 4 00 0 H z an d
~ 1 5 d B at test freq u en ci es of 4 0 00 H z an d above

I EC 1 26: 1 973, fi g u re 2

I EC 1 26: 1 973, fi g u re 2

I EC 1 26: 1 973, fi g u re 2

I EC 71 1 : 1 981 , fi g u re 2

I EC 71 1 : 1 981 , fi g u re 2


Q I S0

I S0

An n ex

389- 2: 1 994( 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 , 1 988,

ARLI N G ER,S.

i n sert
pp.

an d

earph on es.

1 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
1 8,

[5]

for

2)
the

RI CH TER,
U.

for

of

th e

cal i brati on

eq u i pped

wi th

1 990,

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:

1 989,

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: 1 970,
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

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Referen ce

ton e

earph on es.

the

resu l t s

( Wi l ber,

of

1 986)

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: 1 970,
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

con d i t i on s

I S0

389,

u sed

in

h owever,
the

ot h er


I S0

I CS

1 3. 1 40. 00

Descri pt ors:

Pri ce

0

389- 2: 1 994( E)

based

acou st i cs,

on

7 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