Hdx Noise Reduction; Progress You Can Hear - Sennheiser Tourguide UHF Instructions For Use Manual

54
HDX noise reduction

Progress you can hear.

Transmitter
This product family is equipped with HDX, the Sennheiser noise
reduction system that reduces RF interference. It increases the
signal-to-noise ratio in wireless audio transmission to more than
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.
HDX has been specially developed for high quality radiomicrophone
systems.
Note:
Only transmitters and receivers that are equipped with
work correctly with each other. If non
with HDX, the dynamic range would be drastically reduced and
the transmission would sound blunt and flat or shrill.
RF link
Inherent noise
of the RF link
HDX equipment was mixed
Receiver
HDX can