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Technology has
changed so drastically for hearing aids over the last 5
years that it’s hard to keep up with the latest advancement in
hearing technology. So we have made it easy to understand the
differences of each and every hearing aid and the technology
it uses.
Hearing aids can be broken down into two main types, Analog or
Digital. Here is an overview of the main differences between
the two.
Analog:
The term analog is used to describe a type of signal
processing conventionally used in hearing aids. Analog signal
processing is made possible by receiving a SOUND WAVE in
through the microphone, converting it to a VOLTAGE and passing
it along to an ANALOG FILTER where it can be manipulated and
amplified. In order for you to hear and understand the
amplified sound, the VOLTAGE must be changed back into a SOUND
WAVE
before it exits the speaker into your ear.
This is an older technology and is rapidly becoming obsolete.
The reason for this is due to the limitation Analog offers
with sound manipulation. Its harder to adjust a hearing aid
for unique and harder to fit hearing losses. This is why
Digital is now becoming an industry standard.
Digital:
Like Analog, the Digital hearing aid works in many of the same
ways. A SOUND WAVE still is received by a microphone and
converted into a VOLTAGE. Now, instead of the VOLTAGE being
passed along to an ANALOG FILTER, it is now converted into a
DIGITAL SIGNAL and passed along to a DIGITAL PROCESSOR for
manipulation. Digital sound processing means that the sound is
registered mathematically. It is encoded as a series of
numbers, which reflect its pitch and volume at a given instant
in time. Processing the sound bit by bit is much more precise,
and certain details can be changed without affecting the
integrity of the sound. As it is more robust than an analog
signal, a digital signal can be repeated accurately and
endlessly without affecting the overall sound quality. The
digital principle is like making copies of a scanned image on
a software diskette: each copy is a perfect duplicate of the
original.
All of the latest advancements and brands are available
through Astrum.
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