The Ear as an Acoustical Transducer

7/21/2019 The Ear as an Acoustical Transducer

1/40

Ear as Transducer

Hair Cells

ustraflan

Acoustical

SocIety

Otoacoustlc Emissions

Cochlear Implant

Vol

J No 3

December

993


2/40

For

high pe

rformance testing

,

HP

's n

ew

FFT

anal

y

ser

gives you multiple choice.

;;;..

r

. .

Any of t

he

above

n

B.

Vibration Analysis

\.

r

and Simul

ation L e ~ ~ J

o A. Aco

ustic

and

Realt im

e

1/3 Octave Analysis

o C.

Rotating

Mac

hinery and

Order Trac

king

Analysis

When you need a combinat ion of

h i g h r f o r m l l n ~ m > n t s

but don't want the expense ofmulti

pie instruments , there's only one

choi ce; Th e HP 3S665A Dymlmic

S ignal Anal y....r .

Because with the liP 35665A, t he

choice is yours: High-quahty eom

puted order tracking without ex

tern

alh

ardw8

1 l

.R ealtime oct.avt'

measure menta tha t m.....

specificati ons. Swept si n

em

ellllure

men18th at arc lIfa..t s sfrequency

rt' spon se Ilna lYllel'1land h llve the

added funct ions of an FFT ana ly... t

As well as curve-lit and synthesis,

arbitrary

sourceend

HPln

trument

BASICcontrol for wet au

tomation. You only pay for the op

t ions you select. And you can add

.oew options at any time righ t at

your ,.ite.

So,

leave your opt ions open . f or

details on all the choices th e HP

35665A giv

es y

ou, call Toula in oul'

Cus tomer Info

rmation Centre

on

131 347 and

ask

for your free lpy

of ou r Mec

hanieal

Te t Handbook


3/40

EDITORIAL COMMITTEE:

Neville Fletcher

Marion Burgess

JosephLai

ASSISTING EDITOR:

LeighKenna

Vol21 No3

RTI LES

ONTENTS

December 1993

BUSINESS MANAGER:

MrsLeighWallbank

The Ear as an coustical Transducer

GKYates

Hair Cel ls - Mechanosensors and Motors

JOPlckles

.

ForAll

General

Business

subscriptions, exiracopies, back

issues, advertising, etc.)

MrsLeigh

Wallbank

POBox579

CRONULLANSW2230

Tel

02 5284362

Fax 02)5239637

ForAll EditorialMalters

articles, reports,

news,

bookeviews,

newproducts,elc

TheEditor,

Acoustics

Australia

Acoustics Vibralion Centre

AuslraiianDefenceForceAcademy

CANBERRAACT2600

Tel

06 2688241

Fax 06)2688276

email:[email protected]

Acoustics

Auslralia

is published bylhe

Australian Acoustical Society

AC,N,000712658

Responsibility

forthe

contenls

of

articles

reslsupontheaulhorsandnolthe

AuslralianAcousticalSociety,Articles

may be reproduced in full provided

adequate reference is

quoted.

Acouslics

Australia is abstracted and

indexed

in Engineering

Index,

Physics

Abstracts Acoustics Abstracts

Printed by

Cronulla Printing CoPtyLld,

16Cronulla Plaza,

CRONULLA2230

Tel

02 5235954,

Fax 02)

5239637

The Ear as an coustical Generator: Otoacoustlc emissions and

their diagnostic potential

E L Le Page, N M Murray, K Tran, M J Harrap....... 86

The

University

of Melbourne/Nucleus Multiple-Channel Cochlear

Implant

GM lark 91

Publica1ionsbyAusiraiians .

AustralianAcousticaISocietylnformation ...

Diary .

COVER:

he im ge on the cover illustr tes the b sic elements of the hum n uditory

system seepaperbyYates


4/40

Ca ll us today for your FREE cata logue.

PRESENTING - THE DYNAMIC DUO

Force

Modal

Pressure

Vibrat ion

When you need to measure a dynam ic

response, we can provide a solution from

the P,C .B. range. Our engineers are

ava ilable to discuss your needs.

The Dynamic Sensors.

The P.C. B. Piezotronics fam ily of quartz

and ceramic sensors provide quality

measu rement in dynamic applications for:-

31st Janu ary, 1994.

2nd Februar y, 1994.

3rd February. 1994.

8th February, 1994.

10th February, 1994.

Acoustic

Rotating Machinery

Perth ,

Adelaide,

Melbourne,

Brisbane.

Sydney,

Vibration

Modal

VICfTAS /NT PH : (OJ) sss7277 FAX: (OJ) 79'6

NSW/ACT PH : (02) 74 0 FAX: (02 ) 748

0

44

QLD PH: (07) 841 4' FAX: (07) S41 4600

WA FREE PH: 11 816687 FAX: (03) 79' 6

We are of fering YOU an opportunity to see

the Zonic WCA in actio n. register

TO Y

for one of our FREE seminars to

be held in:-

AGENT:

SA PH: (OS) 36' 1000 FAX: (08) 36' 1001

The Dynamic Analyser. A Click and a Drag opens the window to a

world of analysis technology. The Zonic

WCA combines POWER and MULTI

CHANNEl , capability for:-

e

neees

M,D.

K.J . IJAymSON PTY. I.TD .

AC: > 0ln 0}1961

17 gcbema Street . Moorabbin , Vic JUl9

Vol 21 No. 3 - 74


5/40

Aboul once each year we publish a Spec ial Issue In which invited contributors survey a field 01particula r interest in aOOUSl;CI,

The sub ject of Hearing Is central to our whole discipline indeed, witl'1outlhls particul ar biological sense, acoust ics as a

subject would hardly exist Beca use

01

lhis central Importance and the wide scope of the field of hearing , we could have

approached

rt

in many different ways,

and

pema ps some

0

mese

will be

\he

subj&ct of

other

special Issues in the future, Th is

lime we have c:oocentratlld on physiologi cal aspects of human hearing, end our invrted papers come 'rom four Af.,stralian

g

oupstna

t

have

made very

significant

oontr ibulion s to knowledge in trIis WM . The first two pape' dea l with the physiology

01normal hearing ,

and

lo low the path from tl'le ea.d f'\Jm Ihrougl'l the coctlIea 10 lhe hair cells and lhe M'Ural outpuI signal s

The nextcontributionllK mintlSlhec:llillS lt1alare provldedby the spDf1t8neousoscillat ion 01 the inner ea. i seII. wt1deltle linal

peper reports on the exerting progress that has

been

made in devl lopment 01a ooctllear implant

to

aid lt18 profoundly deaf. It

is clearly imposs


6/40

I S/P=f - 0

OUSTEX

For Sound Control

NATIONAL ACOUSTIC

LABORATORIES

ACOUSTIC NOISE

SPECIALISTS

ArechX in RlMl beranl

Test FD WS erticrlg:

Applicab le 10 any surface

Safe . natural, recycled

Monolithic, archilectural finish

i s s i m . S o u n d i o w e r

. n d A t K < r p t

~ i

C>enenAalRsli cTcairl(l

CorI1'fdlemiveANlysisoiSoun:land

Vibralion

Mcl sun:'llltQ and Control uCOccup.aionl I S oi'IC

E l r c t n , ) . A c o u I ~ Ca lillnuon V, tn iol

A I I l I I

r p e m N o l M

i t N .

\ l l J l

ACOUSTEX PTY

.

LTD

.

9 Dissik Street

Cheltenham 3192

Melbourne Syd ne y

Phon. : 03

596

58 96 Phone , 02

t 8

1 I

1

03 586

56 21 F

I 0 2

11315

Ml: &SUJemo:1'l

andCOllin

of OccupallOml Noi'IC

ReferenccandYloniLoring Audiomc:uy

Reoidel\lia' ard r o n m Noise

. l 'duCi liun l nd Train ing ACO\ISlicR

C \C I

h

126 Grcville Slm:l. Chatswood, N.S.W. 20(,7

Ph: (02) 4126S00

Naliolull Acoustic Laboratories is a

Division

tlf

AlIslJ1ian HearingSelviccs a

Commonwealth

Oovemrreru

Aut horll)'

Vii

A Jlf\'


7/40


8/40


9/40


10/40


11/40


12/40


13/40


14/40


15/40


16/40


17/40


18/40

,_ .

.

.

. -

.

.

'

U

u .. ... - . ,a ... .. ..

to . .

Frequency (kHz)

Time (msl

Frequency 1kHz)

~ 10

Time (rns) Time (ms)

FIfJUff}

3.

SulJiecrive and oIJi/ive m eiUl XeS of left and

right

ears of one subiect : Panels A, pure tone audiogram IdB

hearing lfJ ,eI/; Panels 8. fflK/U# c y depl'fldenc e of the cubic distort ion tone 2(, - I. dB SPL/ and

r o u n mse

(grey Mea): Panels

C,

cross p $peC t tum (black areal of pair of lime


19/40


20/40


21/40


22/40


23/40


24/40


25/40


26/40


27/40


28/40

celebrating years

helping people to hear

For more informslion f1 the Cochlear

22 Channel implanl oontaet:

Cochlear Ply Limited

14 Mar l Rd

Lane Cove

NSW 2 66

AUSTRA U A

Ph 2 4286555

F...... 024286539

ACN 2 6 3

A

SINGLE

SOURCE

SOLUTION

TO

NO

ISE

MEASUREMENT AND CONTROL

W cm

j O U a I i M

n..free

< n J , N o O e ~ ~

< n J ~ I > e _ 1 l c i

ox,JeCI ...-.:IodOcefor

oon cIi

ilecision ndi>g


29/40


30/40


31/40


32/40


33/40


34/40


35/40


36/40

d Metal Products Pty td

ACOUSTIC

SII EETMETAL

ENGINEERS

Phone:

03

793 2340

Fax:

0 3)

794

5193

FACTORY 1/ 21 GREEN ST

DOVETON VIC 3177

ALCOAOFAU

STR LI

HOWDENSIRO O

PRO

CT:

LIENT:

ENVIRONMENT

AL

NOI SE

O N T R

O

L

YOUR

SOLUTI

ON TO

INUSTRI L NOISE

PRO L MS

MANUFACTURE RS OF ACOU STIC

Louvres Doors Encosures

Silencers Steel Fabrications

SUPPUERSOF

EQUIPM

ENTFOR

DESIGN MANUFACTUR

E

INSTAl l

Demoun

table Panel Enclosures

Modular Acoustic Panels S1C 33 to 41

Acoust ic Doors NATA Tested

Industria l Grade Si lencers

Audio Booth s

Telephone Booth s

Absorptive Wall Un ings

Approved Fabricator

And

Supplier To

Government Utilities

QA Control

Dl uy

o ~ r a

Incorpurating IIO ......

to down-load

dallli

nlo ) OUf ro mpulff .

Cmnp lftf ly wuth tr prollf nd t l ~ d

Cflol

actln o rl

nform,atlon.

Phon

e: 02) 755

1077

50 RrVERSIDE ROAD

CtllPPI

NG NORTON, N.S.W. 2170

Vol 21 No.3 - tOO


37/40

AUSTRALIAN ACOUSTICAL SOC

IETY ENQUIRIES


38/40

' -

SOCETYSUBSCRIPTIONRATES

AS S C ie t aC l r h r

hyIIWII'..... ~ n

~ ~

Froml APRL l993

membtrs/ li

p

Ellqulrln f'9lldlrl9 l11tf1lbtt111i1lIllCl .m l lnlrlg ,. . I l Ip tllouldN

w i I l b e a l o l o w s

dirlellolllOheoppropf\ltl

Slm

DMliOl1See,

bryll

.,,6er.

.uS-WADMIlon

NlIbrof

al ldMembel sas

AA$ -NSWOM' 11lIl

AlIiiateanclSubsoiber,________

'

Olio.1010

S

'

cel a c.rcr. FoiIIGatOll

WEST PER P l 63n

P,ivaleBaQ , DMlUNGHI/RST2010

AAS OunslI IIltDlriIlon

SecldrFlLl.Ini; otll

~

C.-f1of1RlIIlbIP1ylJll

1

(091361

15200

ANNU

AL

CONFEREN

CE

TeI(02)9695668

27S\a1ion St

Cqlieiofpa lconIere

octl

proc

eedil1

gs

A AS

SADMtlon

INDOOROOPl lV416l1 AAS_VlctoiiDlvlslon

CI-Qep8Ilmertol l.lodl&'\l

S C;M RMRumblt

PO

8Q.o

.17

t.l......

St PO

mavbeorl1erad lrom

u . .,

yatAdoJ

.,.,.

101107)3789211

MEl.lCIlJ\NE 3000

i c a I i o l 1 O l t i c

~

Sec:loIrCStnMI

Aus1ral

ianAcolJ,lieaISOCety

SKMtAClIrICI

1el 03)19oI

om

tST

aykJ

B A

oacI,

OVRAl,.2158

rtl (08)2285698Fao(OIl)2;24G464

Fb (03j1lMSI89

ACOUSTICS

AUSTRALIA

INFORMATION

GENER

ALBU

SINES

S

PR

NTING

, ARTWORK

ADVE

RTISING

RATES

' AdYMIlng Sublcrlpti_

W j l a m

B W

Norl-flem

-

O

~ ~

mo

16CIOI1UIlt FOIala

CRONU.LA2230

1/

1

Page

el (02)S284362

5 9 S 4

'i2Page

ar

Fax(02)

S239637

FaxlO2j5239637

If.l

P

9 l

225

ARTICLES

REPORTS

SUBSCRIPTIONR

ATES

1994

1

4

Page

200

tso

NEWSBOOK R

EVIEWS

SpoIcolDUf

50

perlXllou

NEWPR

ODUCT

S

''''

AS

AS

Prepared lrlWt

P O O t O Q O o q : i j l

' '''

AS

AS

95

COlum

nrate:

per

em

(113p';dlh

Th Eli1or

' '''

A 95 AS131

Dlacounl lltea: (3

l;01 lMQl1

r.elds inildvanol

AcousksAuslralia

Acoustic:s

&

Vibratiorl Centre l M r s e a s ~ g o b y a f m a i

--

H

A

NewSubKrtpllon 3:ni.DiIoCOlft:

u s t a l n i n Q ~

'

ANBERRA ACT2 ))

33'OIscouIllb' 8ltra


39/40

A personalised SLM


40/40

to match your needs

Environmental and industria l noise measurements

using Precision Integrating Sound Level Meter Type 2236

and Sound Level Calib rator Type 4231

Noe. lle

al ' : Type 2236 111... ..

.,

a ..

lin\ oI ;Oundle ....

' len.

i l s_ ' ' ' 'Yrew. . . ,_ ''' tu.. 5_ d.

P . I_ : .. , e o c n l O n 1 I ' > e . _ o 1 i c o f E w i r o n < ' o o I I l d I ~ I I l j'goero$l .. lII'Jl'l*I'eu

UPl

..

bl. : Can

be ull'MOe lemure. ; d.,pl. y, non-volWememoe; an .... f

Documents

The Ear as an Acoustical Transducer