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Resumer de Biophysique : chapiter audition .

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• 04 cours du chapitre d’audition • notes importantes pour reussir l’examen • schemas pour faciliter la compréhension • serie de qcs pour s’entraîner

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MODULE :
BIOPHYSIQUE P1




RÉSUMER BRAINMED ( PARTIE 01 )

, s
ommai
re:


Chapi
tres: Page: Fai
t:

1
.Ondess
onor
es 03-09

2.Phénomèness
ubj
ect
ifsde 1
0-14
l’
audi
tion. ​

3.Phys
iol
ogiedel’
audi
tionet 1
5-17
chai
neaudit
ive. ​

4.Explor
ati
onsfoncti
onnel
lesde 1
8-25
l’
audit
ionenotologi
e.

5.Not
esi
mpor
tant
es. 26-27

6.Sér
iedeQCS. 28-31




Cedocumentes
tdesti
néàl’
usagepersonnel
.
Lepart
ageests
trict
ementint
erdi
e!

, Bi
ophy
siquedel

audi
ti
on:

1
.Int
roduct
ion:
•Lorsqu’unos cil
lateur(ex:sys
tèmemas se-
ressor
t)t
ouchelasurf
aced’ unli
qui deet
oscil
le,i
lcr éeuneper t
urbat
ionquimetenmouvementl espart
icul
esdul iquide
prochesdel asource.
•Cespar ti
culestrans mett
entensui
tecet
teper t
urbat
ionauxparti
culesvoisines,pui

cell
esplusél oignées.
•Ainsi,l
aper turbationsepropagedanslemi l
ieu:onparl
ealorsdepr opagationd’une
onde.




Fi
g01:Propagat
ion
d’
uneonde.




2
.Déf
ini
tions:
Notiond’onde:
•Uneondees tl
apr opagationd’une
perturbat
ionoud’ unevi brat
iondans
l
’espaceetdansl etemps .
Ell
ees tproduit
eparunes ource(ex:
oscil
lat
eurmas se-r
essort).
Cetteperturbati
ons etransmetaux
parti
culesvoisi
nesdumi li
eupui saux
Fi
g02:uneonde
parti
culespluséloi
gnées s
onore.
Lepoi ntoùlaper t
urbationestcréée
s'
appellelasourcedel’onde.

Transpor td’énergie:
•Lorsdel apr opagationd’uneonde:
Lespar ti
culesdumi li
euos cil
lentaut
our
deleurpos itiond’équili
bre- fai
ble
énergie-.
Iln’
yapasdet ransportdemat ièr
e.
Seulel’énergieesttransportée. Fi
g03:let
ranspor
t
d’
éner
gie.
Except
ion:
•Lesondesélect
romagnéti
quespeuvents
epr
opagers
ans
mili
eumat ér
iel(ex:l
umière)
.
03

, Typesd’ondes:
Ondisti
nguedeuxt ypessel
onladir
ecti
ondumouvementdespar t
icules:
•Ondetransvers
ale:
Lemouvementdespar t
icul
eses
tperpendicul
air
eàl adir
ect
iondepr opagati
on.
Exemple:ondeàl asurf
acedel’
eau.
•Ondelongitudi
nale:
Lemouvementdespar t
icul
eses
tparal
lèleàladirect
iondepropagati
on.
Exemple:ondes onore.




Fi
g04:Types
d’
ondes


Fi
g05:fr
ont
d’
onde

Frontd’onde:
Lef r
ontd’ondees tl’
ensembledes
pointsatt
eint
sparl ’
ondeaumême
inst
ant.
Deuxf ormespr i
ncipales:
•Ondes phérique
Proched’unes ourceponctuel
le.
•Ondepl ane
Loindel asource-énergie
constant
e-.

Définit
iondel ’
acousti
que:
•L’
acous t
iqueestlasci
encequiét
udi
e:
l
essons
l
esondess onor
es
l
esvi brat
ions
l
aper ceptiondus on

Ondeacoust
ique:
•Uneondeacousti
queestunevari
ati
on
depressi
onquisepropagedansun
f
luidecompres
sibl
e(ai
r,li
qui
de).

Fig06:l’onde
acous
tique
Définit
iondus on:
•Les onestuneondeacoust
iquelongi
tudinalequisepropage
dansunf l
uidegrâceàladéf
ormationélas
tiquedumi li
eu.
L’êt
rehumai nperçoi
tcesvi
brat
ionsgrâceaus ensdel’
ouïe.


04

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Uploaded on
March 18, 2026
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2025/2026
Type
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Mr sali
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