i3 - January/February 2018 - 17

Tech

Similarly, Cirrus Logic's Voice Capture
Development Kit for Alexa Voice Service
(AVS) is optimized for the development
of Alexa-enabled smart speakers, portable speakers and compact audio devices.
It includes a reference board that features Cirrus Logic's CS47L24 smart
codec, CS7250B digital MEMS (microelectro-mechanical systems) microphones and "SoundClear" algorithms for
voice control, noise suppression and echo
cancelation. The turnkey voice capture
reference design enhances "Alexa" wake
word detection and audio capture in
real-world conditions, even from moderate distances and in noisy environments.
Get a Clean Audio Signal
This increases the chances that the voice
recognition engine will understand what's
being asked of it. The application of
MEMS technology led to the development
of small, high-performance microphones

Consumers are using
voice commands
for turning on the lights,
streaming music,
asking questions
and accessing thirdparty services in
record numbers.

a manufacturing standpoint and also
from the perspective of achieving high
signal to noise ratios.

supporting user interactions with "smart"
devices. Polysilicon is the material often
used as a membrane for microphone
devices. But this material is brittle and
defects can occur during manufacturing.
At the AVS International Symposium
& Exhibition in Tampa, FL, researchers
from WPI-Advanced Institute for
Materials Research/Micro System
Integration Center at Japan's Tohoku
University presented a potential replacement material - amorphous metallic
glass (cobalt tantalum boron) and it
shows promise for MEMS mics from

Provide Short Range, Very HighSpeed Transfer of 4K/HDR Video
The IEEE standard 802.11ad could
play a role using the 60 GHz spectrum
instead of the 5 GHz and 2.4 GHz
used by most Wi-Fi connections.
It provides data throughput speeds
of up to 7 Gbps (vs. 3.2 Gbps for the
current speed champion, 802.11ac
Wave 2). Since it uses frequencies in
the millimeter range 802.11ad, its range
is limited to about 30 feet. For high
volume data exchange such as 4K
video transfers or streaming from your
smart device to your smart TV it should
work well. But when longer ranges
are needed, the Wi-Fi 802.11ac version
is a better choice to provide the best
consumer experience.

Registration for CES Asia
opens in January.
June 13 -15, 2018 | Shanghai, China
CESAsia.com | #CESAsia
C TA . t e c h / i 3

Register through our
WeChat service account.

JANUARY/FEBRUARY 2018

17



http://www.CESAsia.com http://www.CESAsia.com

i3 - January/February 2018

Table of Contents for the Digital Edition of i3 - January/February 2018

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https://www.nxtbook.com/nxtbooks/manifest/i3_20210304
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https://www.nxtbook.com/nxtbooks/manifest/i3_20180102
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https://www.nxtbookmedia.com