- WHY IS DIGITAL
TECHNOLOGY BETTER ?
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- Digital technology’s
superiority over traditional analog hearing instruments isn’t
just what it can do with sounds, but how much better it does
it.
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- By converting
the incoming signals into computerized ‘bits,’ they
can be processed, or manipulated extremely fast and efficiently
in many complex ways using mathematical formulas known as algorithms.
This gives digital signal processors (DSP) tremendous speed and
agility to recognize sound’s key ingredients.
-
- Like a graphic
equalizer in high-end audio systems, algorithms can continually
divide sounds into frequency channels. These help preserve and
emphasize the higher frequencies containing vital consonant sounds
in speech – the “c” and “t” sounds in
“cat” – over the distracting rumble of low frequency
noise.
-
- Algorithms also
manage noise by its duration. While speech sounds’ intensity
can change radically in a millisecond, noise is more acoustically
stable over a comparatively longer time. Using time, DSP precisely
reduces the levels of continuous sounds like traffic noise and
household appliances. And it instantaneously readjusts when changes
occur, restoring amplification when shorter duration sounds are
detected.
-
- That same sensitivity
is also useful in quiet surroundings. Utilizing an audio technique
called expansion, the digital algorithm senses the consistency
of softer environmental sounds from ventilation systems and appliances.
-
- It automatically
reduces amplification in the appropriate frequency range, immediately
restoring proper levels when the sound pattern changes.
-
- Digital algorithms
can also minimize and eliminate the onset of feedback, a common
nemesis to hearing instrument use. Within its elaborate frequency
channel network, the algorithm detects the elements of feedback
before they become audible. It then reduces levels in just those
discreet channels, with no noticeable effect on perceived volume
levels.
-
- The precision
and flexibility of digital technology also gives your hearing
professional the ability to more accurately tailor your amplification
for the best possible match to your listening and lifestyle needs.
This process may include subsequent visits to ensure that you
are receiving maximum benefit from your instruments.
-
- In order to
determine if the many advantages of digital hearing technology
might benefit you, complete testing and evaluation are necessary.
To locate a hearing professional in your area, visit our “find
a hearing professional” section.
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