墨西哥狼手机声学原理介绍

2021年1月19日发(作者：房祖名)

Learning
report
on
principles
of
acoustics
of the cellphone
ZHOU Yang-fang
Once in the Sunlite Electronic (Shen Zhen ) co.,ltd, Shen Zhen 518000, China
Abstract:


These days , through the chect of kinds of material ,I have a general idea of the mobile phone
acoustics and make a relavant arrangement ,making mainly a summary report in here .


The
sound
system
of
the
phone
have
the
three
basic
function
devices
that
include
the
speaker
,the
receiver
,and
the
microphone .The
speaker
is
to
realize
the
hand-free
cellphone
conversation
and
the
speech
broadcasting
,the
receiver
’
s
purpose
is
that
the
voice
messenger
is
received by the phone ,and the microphone
’
s function is that the acoustic information is passed
from people to phone .They realize the fundamental function of the phone and perfectly deduce
the phone
’
s roles in the daily life so that we cannot do without it .
Keywords:
Acoustics
of
the
cellphone
,acoustics
devices
,sound
wave
,
the
working
principle
,short
circuiting effect
Content:
1.

The basic knowledge of the electroacoustics
1.1

Sound propagation mode
1.2

Speed of sound
1.3

Frequency domain
1.4

Sound pressure level
1.5

V
oice three elements
2.

Acoustics devices of the phone
’
s structure
3.

Working principle of SPK.&RCV
.
3.1

The basic principle of application
3.2

Workong principle
3.3

Difference of SPK.&RCV
.
3.4

The basic parameters of SPK.&RCV
.
4.

The acoustic short circuiting effect