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Atmel, Eleven Engineering collaborate on Hi-Fi audio solution

Posted: 10 Jan 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Squeak 1A? Hi-Fi? ATR2406? transceiver? XInC2?

Atmel and Eleven Engineering announced the availability of a Hi-Fi digital wireless audio solution, the Squeak 1A platform. The Squeak platform integrates Atmel's ATR2406 2.4GHz ISM-band single-chip transceiver and the XInC2 wireless processor from Eleven Engineering, providing baseband MAC protocol, audio CODEC and advanced dynamic error correction algorithms. According to the press release, Squeak 1A provides robust quality of service and outstanding audio fidelity even in the presence of interference sources such as microwave ovens, 802.11b/g networks and cordless telephones at indoor ranges of 15-, 25- and 50m.

Squeak 1A is available in an integrated, mass-production WHAM2-package module. The architecture of Squeak 1A allows a single transmitter to communicate wirelessly with up to four independent receivers with selectable end-to-end latency of 15-, 16-, 18- or 20ms. Squeak 1A integrates the ATR2406 and XInC2 with standard Squeak system software and customizable application software. The modules can be configured for either analog or digital input/output, and have available general-purpose input/output for custom user interface features.

Platform components
Atmel's ATR2406 transceiver features a receiver sensitivity of -93dBm at an RF data rate of 1.152Mbps, high adjacent-channel rejection of typically more than 33dBc, and an RF output power of up to 4dBm for link ranges of more than 150m in free space. The integrated VCO and PLL enable the use of Eleven Engineering's frequency-hopping algorithm which detects if other RF systems (e.g., WLAN) are using the same ISM frequency range and finds free frequencies.

XInC2 is a 16bit multi-threaded RISC processor with a MAC protocol, audio CODEC, baseband, DSP functionality and advanced dynamic error correction algorithms, streamlined for wireless audio with eight hardware threads handling up to 100MIPS. The Squeak 1A transmitter takes advantage of XInC2's baseband capability allowing for 2-, 3- and 5-node systems, delivering up to four channels of 16bit, 48kHz audio samples to four separate speakers.

The Squeak 1A platform is available in mass production module form.

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