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> Bluetooth® ICs/Development
> Wi-Fi ICs / Development
> Echo & Noise Suppression
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Applications
> Portable Devices
> Headset & Headphones
> Automotive Applications
> PCs / Peripherals
> Access Points
> Consumer / Home
 
eXtension program
CSR's open DSP developers program, eXtension, has solutions ranging from voice recognition and speech synthesis to music processing, echo/noise cancellation and compressing audio.
 
Create better voice communication products with CVC
More information
How CVC works
What's in a CVC algorithm?
Echo cancellation
Noise suppression
 

CVC from Clarity TechnologiesThe world-leading echo and noise cancellation software for enhancing voice communications - CVC® (Clear Voice Capture) from Clarity Technologies - is now a part of CSR's portfolio. With some two-thirds of Bluetooth® applications being voice-related, CVC is an extremely powerful tool for developers looking to create more-versatile, class-leading wireless communications enabled products. The powerful and field proven CVC algorithm suite can cut man-years off the timescales normally required to create high quality products, and give developers much greater flexibility over form factor:

What is CVC?
CVC is a modular suite of algorithms for enhancing voice communication products, including acoustic echo cancellation and noise suppression, that can be applied in a granular fashion to suit the application and the processing resources available. Rather than suppressing noise like many competing technologies, CVC separates out the voice signals of interest using proprietary signal extraction techniques. This award-winning technology employs an active and self-adaptive system that leverages the manner in which human speech is heard and processed.

CVC platforms
CVC runs on the DSP-equipped BlueCore-Multimedia. This innovative multi-processor device provides an economic single-chip solution for Bluetooth applications including automobile hands-free kits, Bluetooth headsets, multi-role stereo headphones (and for mobile phone/PDA upgrades offering Bluetooth plus streaming-music capability). CSR offers two device options: BlueCore3-Multimedia and BlueCore5-Multimedia with uprated DSP core.

CVC has also been ported to a number of major commercial processor platforms, and CSR provides support for high volume applications. Contact CSR for further details

Applications
CSR offers CVC as integrated elements of development tools and ready-to-use solutions for common Bluetooth applications. Examples include:

BlueVOX1 CVC is a ready to apply monaural Bluetooth design with echo and noise cancellation algorithms for supreme audio quality.
The BlueTunes1 example design combines the function of a Bluetooth headset with stereo headphone capability for playing music.
RoadRunner Plug'n'Talk is a ready to apply Bluetooth design for automotive applications - with echo cancellation and noise suppression algorithms optimised for the automobile cabin.