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Bluetooth chip includes 'unique' voice enhancement tech

Posted: 12 Jun 2008     Print Version  Bookmark and Share

Keywords:Bluetooth  EDR single-chip  CMOS process  voice enhancement 

Broadcom Corp.'s next-generation Bluetooth Version 2.1 + EDR single-chip solution features lower power consumption, smaller chip size and improved radio performance.

Developed in a highly advanced 65nm CMOS process, the new SoC solution targets mobile handset applications and includes the unique Broadcom SmartAudio sound and voice enhancement technology that was previously available only in wireless headset products. Cellular handset makers can now offer enhancement in battery life and audio quality, providing a more satisfying wireless experience to consumers.

The BCM2070 integrates a high performance 2.4GHz "Class 1" Bluetooth radio for improved output power, providing a stronger radio connection between handsets and other devices such as headphones or wireless headsets, and a more satisfying end user experience. Based on 65nm CMOS technology and enabling Bluetooth version 2.1 + EDR, the device introduces new levels of performance for Bluetooth devices including the smallest available solution (with an innovative chip-on-board implementation enabling board space designs of less than 25mm x 25mm) and a savings in power consumption of up to 40 per cent compared to other Bluetooth solutions.

The BCM2070 is based on multiple generations of Broadcom's Bluetooth technology and features a new RF architecture that provides key improvements in receive sensitivity and transmit output power to ensure better connectivity between mobile phone and headset products. The new chip also allows the handset to stream stereo music to multiple users simultaneously using the advanced A2DP Bluetooth profile—a feature made increasingly attractive as handsets add advanced multimedia capabilities and move to the centre of the personal area network.

In addition, the BCM2070 integrates key elements of the company's SmartAudio sound and voice enhancement technology that significantly improves the audio quality of Bluetooth links. The audio enhancement technologies in the BCM2070 include Broadcom's packet loss concealment (PLC) technology that reshapes audio streams, compensating for lost data packets and delivering clearer digital voice communications.

Broadcom PLC technology has been specially developed to improve audio quality in wireless systems, which are particularly susceptible to packet loss and connection issues with radio interference occurring from other RF signals, as well as blocking from buildings, structures or even human bodies. As governments and municipalities enact legislation requiring "hands-free" configurations for in-car mobile phone use, the ability to deliver compelling voice conversations over Bluetooth grows increasingly important.

"Enabling improved audio performance in handsets with a smaller, lower power solution provides our customers yet another advantage for their advanced handset devices," said Craig Ochikubo, senior director of marketing for Broadcom's personal area networking line of business.

The single-chip BCM2070 Bluetooth base band processor is sampling to early access customers. Pricing is available upon request.

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