Development Kits for the Alexa Voice Service (AVS) are complete reference solutions for building products with Alexa. They include chipsets, voice processing technologies, and client software that leverages the AVS APIs to help you easily build commercial-grade, voice-activated products while reducing development costs and accelerating the integration process.
How you want your users to interact with your product determines the number of microphones you select. Voice-enabled devices designed for closer, hands-free interaction can use 1 or 2-mic solutions, whereas far-field products with listening ranges from across the room can benefit from a 4 or 7-mic array. Keep in mind that additional mics may take up more physical space and add incremental costs to your product.
Your product’s form factor determines the arrangement of microphones. Square or circular arrays in a horizontal plane are better for 360-degree, omni-directional listening often utilized in tabletop products like the Amazon Echo or Echo Dot. Linear arrays are better suited for uni-directional listening or wall-mounted products such as connected light switches and Alexa-enabled thermostats like the ecobee4.
Voice processing algorithms enable your device to leverage the full capabilities of the mic array. Noise reduction improves speech recognition in noisy environments, beam forming helps locate the direction of speech, and acoustic echo cancellation allows the user to barge-in even when your device is playing loud music. These algorithms, combined with wake word engines, allow voice-initiated interactions and send clear, processed audio to the cloud.
Designed to help you quickly and easily create far-field audio front end systems for your Alexa-enabled products, this development kit features Conexant's AudioSmart™ CX20924 Voice Input Processor with a 4-microphone board and Sensory's TrulyHandsFree™ wake word engine tuned to "Alexa". Prototype using the AVS sample app on Raspberry Pi.
Designed to help you quickly and easily create hands-free audio front end systems for your Alexa-enabled products, this development kit features Conexant's AudioSmart™ CX20921 Voice input Processor with a dual microphone board and Sensory's TrulyHandsFree™ wake word engine tuned to "Alexa". Prototype using the AVS sample app on a Raspberry Pi.
Designed to recognize the “Alexa” wake word and deliver audio-enhanced speech requests for cloud processing in adverse audio environments, this 2-microphone hands-free dev kit enables ODMs and OEMs to build Alexa-enabled products with high-quality voice recognition interfaces. Prototype using the AVS sample app on a Raspberry Pi. Features include: