Maker Pro
Maker Pro

Bandwidth query.....

J

Jean

Jan 1, 1970
0
Banwidth in any electrical system is taken between the half power
frequencies....Why is the value "half" selected for this purpose ?Why
can't it be a three quarter?....or quarter.?
 
J

JeffM

Jan 1, 1970
0
Banwidth in any electrical system is taken between the half power
frequencies....Why is the value "half" selected for this purpose?
Why can't it be a three quarter?....or quarter.?
Jean

You're right; it could have been anything.
Somebody selected -3dB as a standard and we've stuck with it.
 
M

m s kumar

Jan 1, 1970
0
hi
actually i was told by my teacher that the 3dB limit is tolerable.
i.e., we can tolerate the distortion of the signal upto 3dB limit,and
this limit turns out to be half and so it is selected.
 
J

JeffM

Jan 1, 1970
0
...we can tolerate the distortion of the signal upto 3dB limit,and
this limit turns out to be half and so it is selected.
m s kumar

Distortion has nothing to do with it.
It is possible to have essentially zero distortion at any signal level.
 
G

GPG

Jan 1, 1970
0
Distortion has nothing to do with it.
It is possible to have essentially zero distortion at any signal level.

Half power, -3dB, is just detectable by human ear due to log response,
hence Bels. most people report half loudness at -10 dB
 
Top