mind330 - Sonorom

Audibility Extender
The details in speech and environmental
sounds are important factors for exceptional
sound and comfortable listening.
But high frequency details can be lost in
amplified sound.
For the first time ever, Widex introduces
the Audibility Extender into the midrange
segment.
In contrast to traditional frequency transposition
schemes, the Audibility Extender
uses true linear transposition to move
important sounds from the inaudible
higher frequency regions into the audible
lower frequency regions while preserving
the frequency ratio and the harmonic
content of the sound signal and with
virtually no artefacts.
The Audibility Extender algorithm is
individually fitted to the user’s audiometric
configuration through an automatic
fitting routine in Compass.
With the Audibility Extender, the user’s
hearing range is extended to include
high-pitched sounds which retain their
high-pitched quality even though they
are transposed into a lower frequency
region. Studies indicate that the broader
audibility obtained with this technique
can facilitate the perception of highpitched
speech sounds.
(dB HL)
(Hz)
The Audibility Extender makes it possible to extend
the hearing range into the high frequencies for those
users who were unable to hear these sounds before.
TruSound compression system
Access to high frequency details Appropriate gain and quality sound in every situation
To ease a full day of challenging listening,
the hearing aid must deliver a stable and
audible speech signal while also providing
a comfortable, accurate response to rapid
changes in the input level.
The foundation of the Widex amplification
rationale is that soft sounds must
be audible but remain soft in character,
normal speech must be audible and
intelligible and loud sounds must be
perceived as loud without being uncomfortably
loud.
The mind330 sound is defined within
the TruSound compression system – the
result of over a half century of research,
development and user’s experiences. The
TruSound system has been designed with
increased focus on loud input levels and
consists of three parts.
The figures show recordings of a speech signal being processed
by a traditional AOC system compared to the TruSound AOC.
The red areas show where clipping distortion is heard in the
output from the hearing aid. There is no clipping distortion of
the output with the TruSound AOC.
The TruSound compressors and the
new TruSound AOC (Automatic Output
Control) have refined the handling of
loud input levels for improved loud sound
quality and comfort. The TruSound
stabilisers secure swift changes in
compression attack and release times in
changing listening environments while allowing
predominantly long release times
in stable listening situations.
With these unique TruSound features,
Widex provides your clients with audibility,
intelligibility and comfort in communication
with others.
The traditional AOC system
The TruSound AOC system
8 9
Time/Seconds
Time/Seconds