Cirrus Logic DTV Audio Processors Offer Flat-Panel Digital Television OEMs an Extensive Set of Advanced Audio FeaturesThe CS4852
December 05 2006 - 9:00AM
Business Wire
In an effort to help manufacturers of flat-panel televisions drive
increased sales and market share through product differentiation,
Cirrus Logic Inc. (Nasdaq:CRUS) has introduced the CS48520 and
CS48540 advanced digital television audio processors. These new DTV
audio processors are complete audio post-processing solutions that
deliver home-theater-like audio quality and features, helping
manufacturers to deliver improved audio performance that consumers
are increasingly demanding. �Consumers are enjoying the display
features of new flat-panel TVs, but they are less satisfied with
the audio capabilities of these products. Manufacturers of DTV
products that provide a better audio experience to their customers
will enable their products to stand out from the crowd,� said Keith
Cheney, vice president and general manager, Embedded Products
Division, Cirrus Logic. �Increasingly, manufacturers are turning to
audio digital processor IC technologies like our DTV audio
processors to quickly and easily improve their DTV audio to provide
home-theater-like-audio quality right out of the box.� According to
research firm DisplaySearch, flat-panel TV profits are falling
along with retail prices, which they project will fall between 32
to 88 percent from Q1 of 2006 to Q4 of 2009. In addition, a recent
Consumer Electronics Association customer survey in the United
States suggests that consumers are increasingly demanding improved
audio quality. In their survey, 83 percent said that both sound and
video quality are �equally important� considerations in their next
home entertainment purchase. The CS48520 and CS48540 ICs give OEMs
a cost-effective and simple-to-design solution capable of providing
an extensive selection of audio features that allow OEMs to provide
consumers with enhanced audio features and maximize the flat-panel
television�s overall audio system. The CS48520 provides four
channels of in/out audio and is ideally designed for two or
2.1-channel stereo applications, whereas the CS48540 provides eight
channels of in/out audio and is targeted for multichannel systems.
Audio algorithms are supported within ROM, eliminating the need for
external memory components. Cirrus Logic also provides a PC-based
graphical programming tool that allows system designers to quickly
and easily set the audio�s performance specifications. Among the
consumer features that can be implemented using the CS48500 family:
Multichannel and virtual surround sound. The CS48520 and CS48540
include support for a wide variety of industry standard audio
algorithms to expand stereo audio or matrix encoded stereo audio to
multichannel audio and convert multichannel audio to stereo audio
while preserving the surround sound effect. Other standard audio
algorithms produce expanded, spatially separated stereo audio,
increase dialog clarity, and provide bass enhancement. Algorithm
support includes AudistryTM by Dolby�, Dolby� ProLogic� II, Dolby�
ProLogic� IIx, Dolby Virtual Speaker� II, Dolby Headphone� II, DTS
Neo:6�, SRS WOW HD�, SRS Circle Surround II�, SRS TruSurround XT�,
SRS TruSurround HD, SRS TruBass, BBE, BBE Viva2, BBE Viva+, BBE
Mach3Bass and Cirrus Original Multichannel Surround. Dynamic volume
leveling. This powerful audio feature allows TV viewers to
predetermine their preferred audio volume listening level, and
automatically adjusts the volume when overly-loud commercials
suddenly come on while watching TV programming, or when audio
volume discrepancies occur when changing channels, or when
switching between incoming sources (such as DVD player, set top
box, etc.) Enhanced listening modes. This feature allows OEMs to
provide users with home theater like audio presets and effects,
such as movie, news, sports, music, and night modes. For example,
news mode adjusts the audio for improved voice clarity during
dialog intensive programs, while night mode limits extremely
high-volume audio passages and reduces bass output, such as during
action sequences in movie soundtracks, to allow comfortable viewing
while other members of a household are sleeping. Bass management.
This feature allows OEMs to more effectively manage the audio
provided to the TV main speakers, with potentially limited
low-frequency capabilities, by routing the low-frequency audio to
an external sub-woofer for faithful reproduction of the bass
content. Speaker and cabinet tuning. This capability allows OEMs to
optimize the audio performance of the DTV system by adjusting the
many elements of audio response for the particular speaker and
cabinet configuration present in the DTV system. Automatic room
equalization. This feature calibrates the audio frequency response
from the TV�s speakers to improve the sound quality within the
listening area, adjusting for room acoustics that can alter the
overall sound quality (such as hardwood floors, mirrors, drapes,
furniture, etc.) A/V Sync Delay. This feature allows the audio to
be properly synchronized with the video, which is delayed as a
result of the video processing which occurs in the DTV system. Up
to 200 milliseconds per channel of audio delay can be provided. The
CS48500 family is a member of the Cirrus Logic high-performance
audio processor product line, which includes Cirrus Logic�s
flagship audio processor for audio/video receiver applications, the
CS49530. Cirrus Logic Inc. Cirrus Logic develops high-precision
analog and mixed-signal integrated circuits for a broad range of
consumer and industrial markets. Building on its diverse analog
mixed-signal patent portfolio, Cirrus Logic delivers highly
optimized products for consumer and commercial audio, automotive
entertainment and industrial applications. The company operates
from headquarters in Austin, Texas, with offices in Europe, Japan
and Asia. Cirrus Logic and Cirrus are trademarks of Cirrus Logic
Inc. All other product names noted herein may be trademarks of
their respective holders. In an effort to help manufacturers of
flat-panel televisions drive increased sales and market share
through product differentiation, Cirrus Logic Inc. (Nasdaq:CRUS)
has introduced the CS48520 and CS48540 advanced digital television
audio processors. These new DTV audio processors are complete audio
post-processing solutions that deliver home-theater-like audio
quality and features, helping manufacturers to deliver improved
audio performance that consumers are increasingly demanding.
"Consumers are enjoying the display features of new flat-panel TVs,
but they are less satisfied with the audio capabilities of these
products. Manufacturers of DTV products that provide a better audio
experience to their customers will enable their products to stand
out from the crowd," said Keith Cheney, vice president and general
manager, Embedded Products Division, Cirrus Logic. "Increasingly,
manufacturers are turning to audio digital processor IC
technologies like our DTV audio processors to quickly and easily
improve their DTV audio to provide home-theater-like-audio quality
right out of the box." According to research firm DisplaySearch,
flat-panel TV profits are falling along with retail prices, which
they project will fall between 32 to 88 percent from Q1 of 2006 to
Q4 of 2009. In addition, a recent Consumer Electronics Association
customer survey in the United States suggests that consumers are
increasingly demanding improved audio quality. In their survey, 83
percent said that both sound and video quality are "equally
important" considerations in their next home entertainment
purchase. The CS48520 and CS48540 ICs give OEMs a cost-effective
and simple-to-design solution capable of providing an extensive
selection of audio features that allow OEMs to provide consumers
with enhanced audio features and maximize the flat-panel
television's overall audio system. The CS48520 provides four
channels of in/out audio and is ideally designed for two or
2.1-channel stereo applications, whereas the CS48540 provides eight
channels of in/out audio and is targeted for multichannel systems.
Audio algorithms are supported within ROM, eliminating the need for
external memory components. Cirrus Logic also provides a PC-based
graphical programming tool that allows system designers to quickly
and easily set the audio's performance specifications. Among the
consumer features that can be implemented using the CS48500 family:
-- Multichannel and virtual surround sound. The CS48520 and CS48540
include support for a wide variety of industry standard audio
algorithms to expand stereo audio or matrix encoded stereo audio to
multichannel audio and convert multichannel audio to stereo audio
while preserving the surround sound effect. Other standard audio
algorithms produce expanded, spatially separated stereo audio,
increase dialog clarity, and provide bass enhancement. Algorithm
support includes Audistry(TM) by Dolby(R), Dolby(R) ProLogic(R) II,
Dolby(R) ProLogic(R) IIx, Dolby Virtual Speaker(R) II, Dolby
Headphone(R) II, DTS Neo:6(TM), SRS WOW HD(TM), SRS Circle Surround
II(R), SRS TruSurround XT(R), SRS TruSurround HD, SRS TruBass, BBE,
BBE Viva2, BBE Viva+, BBE Mach3Bass and Cirrus Original
Multichannel Surround. -- Dynamic volume leveling. This powerful
audio feature allows TV viewers to predetermine their preferred
audio volume listening level, and automatically adjusts the volume
when overly-loud commercials suddenly come on while watching TV
programming, or when audio volume discrepancies occur when changing
channels, or when switching between incoming sources (such as DVD
player, set top box, etc.) -- Enhanced listening modes. This
feature allows OEMs to provide users with home theater like audio
presets and effects, such as movie, news, sports, music, and night
modes. For example, news mode adjusts the audio for improved voice
clarity during dialog intensive programs, while night mode limits
extremely high-volume audio passages and reduces bass output, such
as during action sequences in movie soundtracks, to allow
comfortable viewing while other members of a household are
sleeping. -- Bass management. This feature allows OEMs to more
effectively manage the audio provided to the TV main speakers, with
potentially limited low-frequency capabilities, by routing the
low-frequency audio to an external sub-woofer for faithful
reproduction of the bass content. -- Speaker and cabinet tuning.
This capability allows OEMs to optimize the audio performance of
the DTV system by adjusting the many elements of audio response for
the particular speaker and cabinet configuration present in the DTV
system. -- Automatic room equalization. This feature calibrates the
audio frequency response from the TV's speakers to improve the
sound quality within the listening area, adjusting for room
acoustics that can alter the overall sound quality (such as
hardwood floors, mirrors, drapes, furniture, etc.) -- A/V Sync
Delay. This feature allows the audio to be properly synchronized
with the video, which is delayed as a result of the video
processing which occurs in the DTV system. Up to 200 milliseconds
per channel of audio delay can be provided. The CS48500 family is a
member of the Cirrus Logic high-performance audio processor product
line, which includes Cirrus Logic's flagship audio processor for
audio/video receiver applications, the CS49530. Cirrus Logic Inc.
Cirrus Logic develops high-precision analog and mixed-signal
integrated circuits for a broad range of consumer and industrial
markets. Building on its diverse analog mixed-signal patent
portfolio, Cirrus Logic delivers highly optimized products for
consumer and commercial audio, automotive entertainment and
industrial applications. The company operates from headquarters in
Austin, Texas, with offices in Europe, Japan and Asia. Cirrus Logic
and Cirrus are trademarks of Cirrus Logic Inc. All other product
names noted herein may be trademarks of their respective holders.
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