XMOS: stereo-AEC linear far-field voice kit for smart devices

XMOS announced the XVF3500 voice processor which supports stereo-AEC, along with the world’s first stereo AEC far-field linear microphone array solution, the VocalFusion Stereo Evaluation Kit (XK-VF3500-L33).

The XVF3500 voice processor delivers 2-channel full duplex acoustic echo cancellation.  The solution is designed for developers working in the growing voice-enabled smart TV, soundbar, set-top box, and digital media adapter markets, all of which require stereo-AEC support for “across the room” voice-interface solutions.

Uniquely, the solution also supports configurable AEC latency, where the AEC reference signals can be accurately calibrated, and the latency adjusted, to enable after-market far-field voice accessories for existing consumer electronics products.

As with all other XMOS voice solutions, commands are accurately captured from across the room for processing by a cloud-based speech recognition system, even in complex acoustic environments. The XVF3500 voice processor delivers sophisticated voice digital signal processing including a full duplex acoustic echo canceller with barge-in capability that enables users to interrupt or pause a device that’s playing music, and an adaptive beamformer that follows a speaker. Additional sophisticated dereverberation, automatic gain control, and noise suppression provide crystal clear voice interaction experiences even in noisy environments.


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