Automotive Engineering - April 2023 - 12

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Harman's sound and vibration sensor provides
acoustic sensing of the vehicle's exterior.
anything the automotive industry's
microphone technology leader has
done in the past. " It took lots of engineering
hours to design a unique, conical-shaped
grille pattern for the microphone, "
said Jhala. The resulting grille
pattern includes drainage holes to protect
against a direct water hit to the
electronics. " There is also a protective
membrane in front of the microphone
itself that serves as a secondary layer
of water and environmental protection, "
he explained.
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Acoustic vehicle monitoring
When technology development started
in 2019, Harman's sound-and-vibration
sensor and the external microphone
products were intended as an alert system
for autonomous vehicles. But it
soon became apparent that human
drivers also could benefit from acoustic
sensing of the vehicle exterior.
Another example is speech commands,
such as 'open liftgate', or 'close
liftgate', " Jhala said. When used separately
or together, the sound and vibration
sensor and external microphone
solutions also enable acoustic vehicle
monitoring. For instance, an alert can
be sent to a cell phone if vehicle glass
breakage is detected by the sound and
vibration sensor.
The first passenger-vehicle application
of the design-validated sound and
vibration sensor or the external microphone
product is expected in the U.S.
market in late 2023. Asian and
European market applications are expected
in 2024 or later.
Kami Buchholz
12 April 2023
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AUTOMOTIVE ENGINEERING
HARMAN

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Automotive Engineering - April 2023

Table of Contents for the Digital Edition of Automotive Engineering - April 2023

Automotive Engineering - April 2023 - INTRO1
Automotive Engineering - April 2023 - SPONSOR1
Automotive Engineering - April 2023 - CVRA
Automotive Engineering - April 2023 - CVRB
Automotive Engineering - April 2023 - CVR1
Automotive Engineering - April 2023 - CVR2
Automotive Engineering - April 2023 - 1
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Automotive Engineering - April 2023 - CVR3
Automotive Engineering - April 2023 - CVR4
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