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Bluetooth module makes speakers portable

Posted: 29 May 2012 ?? ?Print Version ?Bookmark and Share

Keywords:Bluetooth module? amplifier? audio processing?

HiWave Technologies has announced the DyadBA3 module that puts together the company's HiAS2002 Audium amplifier chip with CSR's BC-05 Bluetooth technology to support AVRCP and A2DP Bluetooth audio profiles for portable, wireless speakers.

The module delivers two channels of 13W burst power output into 8 speaker drive units, extending battery life in small-format, portable applications.

The HiAS2002 amplifier extends battery life by up to 20 times at normal listening levels, compared with Class-D amplifiers. It also offers envelope-tracking technology that eliminates clipping at high audio levels, ensuring clear sound at all volumes.

The DyadBA3 module may be entirely powered from a single lithium-ion or lithium polymer battery. It incorporates circuitry for charging from a USB host or AC power adapter.

HiWave's Audium audio processing includes multistep volume control at 1.5dB per step, a mute function with adjustable ramping, and 16 user-definable bi-quad filters for implementing equalization, voicing, tunable bass extension and stereo-wide effects. The DyadBA3 module self-configures on power-up and invokes power-saving modes when no audio signal is present. It incorporates a stereo microphone input, making it also suitable for desktop or portable VoIP-phone audio portal applications.

Measuring 110 x 46 x 25mm, the DyadBA3 module partners with the company's HiWave's patented balanced mode radiator speaker drive units. Pairing the module with two HIBM36S12 BMRs creates a compact, fully portable Bluetooth stereo speaker capable of delivering room-filling sound. For greater volume and frequency range, a pair of HiWave's new HIBM36S05 BMRs will deliver an even higher level of full-range, widely dispersed sound.

HiWave is sampling its key customers now, and the DyadBA3 module will be available in mass production quantities in August.

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