The above block diagram indicates the various components of the Voice Assistant SDK. If you also wish to expose some additional functionality beyond voice-assistant (switch, fan, water purifier, etc), you will also have to write the device drivers for controlling this. Typically, as a device manufacturer, you may want to customise certain configurations of this software. The software that is part of this SDK is sulf-sufficient to provide a full voice-assistant capability for your device.

Codec: The playback data is received by the Codec which it subsequently sends to the speaker.

And it subsequently interacts with the ESP32 for relaying the audio input. The DSP is interfaced with the Mic Array for the audio input.

DSP: The DSP typically performs the Noise Reduction (NR), Acoustic Echo Cancellation (AEC) and run the Wake-Word Engine (WWE).IoT Device: It also runs the software that interfaces with your peripherals providing the smart-device functionality that you wish to expose.ESP32 is also responsible for any state management, audio encode/decode operations. Voice Assistant Client: It runs the Voice Assistant client that manages the audio communication with the Voice Assistant's cloud.ESP32: This is the primary microcontroller that controls the operations of the product.The following are the relevant blocks for the solution: The typical solution architecture of the product is shown as below.

This allows customers to leverage Espressif's rich IoT device development capability while simultaneously incorporating voice enablement in these devices. IntroductionĮspressif's Voice Assistant SDK allows customers to build Alexa and Google built-in smart devices. Please refer to Changelog to track release changes and known-issues. Please contact for production-ready Wake-word recognition DSP Firmware that is available from our DSP partners. The Wake-word ('Alexa') recognition software that is part of the GitHub repository is for evaluation only. A1.4 Device not crashed but not responding.1.4 The ESP32-Vaquita-DSPG Development Board.

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