87
Progress you can hear:
The evolution wireless Series is equipped with
HDX
, the new Sennheiser
noise reduction system that reduces RF interference. It increases the signal-
to-noise radio in wireless audio transmission to up to 110 dB.
HDX
is a wideband compander system which compresses the audio signal in
the transmitter in a 2:1 ratio (related to dB) to lift it above the inherent noise
floor of the RF link. A 110 dB dynamic range signal is thus transmitted with
an effective dynamic range of only 55 dB, which is above the 60 dB noise
floor of the RF link. In the receiver the signal is expanded in an identical and
opposite way in a 1:2 ratio to restore the original signal, at the same time
reducing the RF noise to below the noise floor of the receiver. Giving a radio
link with a better signal-to-noise ratio than a CD.
HDX
has been specially developed for high quality radiomicrophone systems.
Note:
Only transmitters and receivers that are equipped with
HDX
can work correctly
with each other. If non
HDX
equipment was mixed with
HDX
, the dynamic
range would be drastically reduced and the transmission would sound blunt
and flat.
HDX
is permanently active and cannot be switched off.
HDX
noise reduction
XLR-3 connector (EM 500)
1
/
4
” (6.3 mm) stereo jack plug (EM 500)
balanced
unbalanced
balanced
unbalanced
Headphones
3.5 mm stereo jack plug (lockable)
3.5 mm stereo jack plug (lockable)
(SK 500)
balanced
unbalanced
Headphones
DC connector/Power supply
Connector assignment
Transmitter
Receiver
Dynamic range of the AF signal RF signal (max. 60 dB)
Inherent noise
of the RF link
Содержание SKM 500
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