A Bluetooth reference design platform from Broadcom Corp. is designed to enable improved audio quality and a more compelling user experience in a broader range of hands-free car kit devices. Built upon Broadcom’s BCM20741 Bluetooth system-on-a-chip (SoC) solutions for headset devices, the platform includes an upgrade to Broadcom’s SmartAudio sound and voice enhancement technology, which reduces annoying background noise to deliver clear conversations in all driving conditions. Samsung has adopted this new platform for its HF1000 car kit device, which is now shipping.
The BCM20741 SoC is the industry’s most advanced low-cost Bluetooth hands-free solution, according to Broadcom, providing the best power efficiency as well as premium audio quality without the need for costly external flash memory for the design of compelling new car kits. It utilizes the industry’s first 65-nm CMOS design process, key user interface enhancements, and superior audio quality. This upgraded reference design and audio enhancement package also provides all the components and software required to develop and manufacture affordable car kit devices with premium audio quality.
The technology platform’s linear echo cancellation is designed to significantly improve “double-talk” performance. Its “near-end” speech intelligibility enhancement automatically enhances the quality and loudness of the caller’s voice so drivers can focus their attention on the road. Integrated multiple language voice prompts (in on-chip ROM) increase ease of use and lowers bill-of-materials (BOM) cost. An integrated “fast-charging” power-management can recharge large car kit batteries in minutes. And, highly tunable audio algorithms enable further differentiation and a unique capability to adapt to various form factors.