Audio processor suits Ambarella-based IP cameras & wearables

5th June 2015

Nat Bowers

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Designed specifically for Ambarella camera SoCs, the Timberwolf audio processor from Microsemi has been engineered to be the best-in-class HD audio solution for Ambarella’s suite of video processors. The audio processor is designed with AcuEdge acoustic technology on Microsemi’s innovative Timberwolf DSP platform, which features a set of complex, fully integrated algorithms that allow users to extract intelligible information from the audio environment in which they are communicating.

The ZL38AMB provides license-free, royalty-free intelligent audio algorithms. The comprehensive Microsemi AcuEdge package accelerates customers’ time-to-market with a complementary reference design and easy-to-use development tools such as the MiTuner acoustic echo cancelation tuning kit.

The Microsemi ZL38AMB device is an advanced wideband acoustic echo canceller designed to provide leading-edge echo cancellation, noise reduction, beam forming and sound location detection for the increasingly demanding IP camera and wearable markets. The capabilities of the device boast important advancements to meet growing demand in this space. According to the latest research from IHS, the IP camera and wearable imaging market reached combined shipments of 21.6m units during 2014, and are expected to see continued growth in shipments of 30% per year over the next four years, climbing to over 91m units shipped annually by 2018.

ZL38AMB acoustic echo canceller is a highly adaptable hardware platform designed to enable intelligent audio processing for camera applications. The ZL38AMB provides a powerful DSP with voice specific hardware accelerators, three digital microphone interfaces, two independent 16-bit DACs with headphone drivers and two flexible time-division multiplexing interfaces in a single 64-pin QFN or 56-pin 3x3 CSP package. Additional features include 48kHz stereo music playback with voice, ultra-low and standby power. It can run unattended (controller-less) and offers self-booting into a configured operational state.

“Our 2nd gen family of audio processing solutions leverages the offerings of the Microsemi AcuEdge acoustic technology, which brings significant features such as far field microphone up to 30m as well as direction of arrival, allowing for camera users to know where sounds are located,” said Jacques Issa, Vice President and Business Unit Manager, Microsemi. “Now, manufacturers working on Ambarella-based IP and wearable camera designs can easily incorporate our leading edge audio solutions into their designs.”

Microsemi’s ZL38AMB with its Microsemi AcuEdge acoustic technology will be available in July 2015.