Noise reduction system – Panasonic WX-RP410 User Manual
Page 17
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
NOISE REDUCTION SYSTEM
Conventional FM transmission techniques exhibit certain
characteristics that have limited the dynamic range
and fidelity of traditional wireless microphone systems.
When sound pressure level is high there is a danger of
over modulating the FM waveform resulting in audible
distortion.
When levels are low, the noise imposed on the
transmitters signal by interference sources becomes
audible. Due to these limitations, the typical dynamic
range of these.systems is in the range of 40-60 dB with
a maximum of 80 dB under ideal conditions.
vAA-
lOOdB SPL
sAA/
130dB SPL
— Distortion
of receiver
Distortion
CD ir
t
■D ^
§ g
1 ? I
?
o
High signal level is outside
the receiving range and
hence it is distorted.
Noise
Even when the input level is up
to lOOdB, the output level is only
within a range of 40-80dB.
Low levels are affected
by city noises.
City Noise
(Personal computer, word processor,
digital device, etc.)
- 14 -