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CD-quality Sound Over Bluetooth Zeevo Chip

The company’s ARM7-based Bluetooth controller and accompanying software form a complete, low-cost embedded design solution for quality audio over Bluetooth, as well as for other performance-sensitiveBluetooth applications.

This announcement means that Bluetooth can finally be applied to portable MP3 players, MP3-capable cell phones or PDAs, and even consumer stereo systems, to provide wireless connections to stereoheadphones, headsets, or speakers without any sacrifice in audio quality.

Due to technical limitations, previous implementations of Bluetooth have not been able to attain the CD-quality level that consumers have come to expect with their wired audio appliances. Thoselimitations have now been overcome, said Zeevo co-founder and marketing vice president, Anil Aggarwal.

The ZV4301 Single-chip Bluetooth Platform and ZSound(tm) Software Zeevo’s new Bluetooth audio design solution, targeted at original device manufacturers, is made up of the new ZV4301 Bluetoothprocessor, Zeevo’s ZSound(tm) software, as well as reference designs for a range of representative audio projects, and a development environment that enables designers to achieve a very fast time tomarket.

The new ZV4301 processor consists of a high-performance, 48 megahertz (MHz) ARM7 microcontroller combined with RF (radio frequency) processing, digital signal processing, communications processing,and algorithmic and control processing, on a single, low-cost transceiver (transmitter-receiver) chip. Included in the solution is Zeevo’s unique ZSound software. Together, they represent a complete”sound design solution” for embedding quality audio over Bluetooth capability into cost- and performance-competitive consumer products.

Zeevo’s new Bluetooth audio design solution supports CD-quality sound, with the standard CD sampling rate of 44.1 KHz (kilohertz). Signal-to-noise ratio (SNR) is better than 82 dB. Audio output poweris 30 mW (milliwatts) RMS. Power consumption is extremely low, enabling a minimum of 14 hours of play time with two AAA batteries. RF sensitivity is better than -85 dBm, which aids in prolongingbattery life, and improves audio quality. The total bill of materials (BOM) for both ends of a wireless stereo headphone solution