AKE ECC basic, User Manual, Page: 6 / 20

6
The optimal noise cancellation
Whenever ear protection capsules are used in workplaces with high noise pollution,
sufficient sound insulation (the HML or SNR value) must also be ensured with built-in
electronics.
The ECC hands-free system from AKE offers a number of measures in order not to exceed
the permissible signal level of 85 dB (A) at the ear.

Ambient noise recorded while speaking is effectively reduced by using a special noise
canceling close talk microphone.

If necessary, the microphone can be locked or released by pressing the volume
plus and minus key together.
Additionally at ECC silence:

An electronically controlled environmental signal coupling

, allows the hearing of
the acoustic environmental information even with hearing protection on the ear,
thus a flipping up of the capsules to perceive important environmental signals,
such as traffic, etc. is no longer necessary. The hearing protection is activated
electronically whenever there are ambient noises that are harmful to hearing.

An ambient noise dependent, electronically controlled microphone switch (iVOX)
activates the signal microphone only when speaking. During pauses in
conversation the microphone signal is blocked 100%.

A monitor tone (side tone) allows the acoustic control of the microphone signal via
the loudspeakers. This function can also be switched off if desired.
Intelligent Voice switch (iVOX)
In order to take full advantage of this type of noise reduction, the microphone should
be placed close to the mouth. The sound sound entry opening is marked, it should
point towards the mouth.
If the voice switch is active, the monitor sound should also be on.
Please note that the noise insulation will only be guaranteed in the long term if an
authorized specialist company installs and maintains the electronics.
Shading and range
The practical range depends on many factors. In free field can be achieved under ideal
conditions to over 1 km. For strong shadows, e.g. through reinforced concrete walls, the
range can, however, drop to a few meters.
In practical operation, even obstacles between 100 and 500 m are possible on level
terrain, from three devices, through integrated repeater operation, accordingly more
range. In battery saving mode, the range is reduced, see section: "System settings".
Exiting the receiving area is indicated acoustically and the search starts.
After returning within 15 minutes, the voice connection is automatically reconnected.
Thereafter, the search of the partner is terminated, but it can be reactivated by the team
leader at any time by pressing the multifunction button

for about one second.
Display:
Both, leaving the receiving area, as well
as the search, are optically signaled.
Out of range
••
15 sec. then
•
Team leader is
searching
−
•
!