The kit features a compact four-microphone linear 100 mm array. The captured voice signals are clear even in noisy environments, enabling commands to be accurately captured from across a room for processing by the Alexa cloud-based speech recognition system. XMOS claims to have the only solution to date that places audio digital signal processing (DSP) and programmable I/O processing and control software into a single chip, enabling designers to cut their bill of materials, flexibly tailor their designs, and reduce costs.
The VocalFusion 4-Mic Dev Kit for Amazon AVS features a reference client built using the recently released AVS Device SDK. The AVS Device SDK is designed to further simplify the experience of creating Alexa-enabled products.
The design is based on the XMOS VocalFusion XVF3000, a highly integrated far-field voice processor based on the xCORE multicore architecture. The XVF3000 delivers sophisticated voice DSP capability including a full duplex acoustic echo canceller (AEC) with barge-in capability that enables users to interrupt or pause a device that’s playing music, and sophisticated noise suppression with adaptive beamforming to provide high quality voice interaction experiences even in noisy environments.
The VocalFusion 4-Mic Kit for Amazon AVS (XK-VF3000-L33-AVS) is available to developers, OEMs, and ODMs from Digi-Key at https://www.digikey.com/xmos-avs, for $499/€423.40/£372