Overview; Esp32-Lyratd-Syna; Hardware Resources - Espressif Systems ESP32-LyraTD-SYNA User Manual

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1.
ESP32-LyraTD-SYNA is one of Espressif's Audio Development Board based on ESP32
MCU and Synaptics DSP. It is an Acoustic Echo Cancelation (AEC) solution, supporting
voice recognition and voice wake-up. Audio files in the format of WAV, MP3, AAC, FLAC,
OPUS and OGG can be decoded and encoded without quality loss. It also supports
connection to Amazon's AVS (Alexa Voice Service), Google's Dialogflow and Google's GVA
(Google Voice Assistant).

1.1. ESP32-LyraTD-SYNA

ESP32-LyraTD-SYNA is based on ESP32-WROVER-B, a BT/Wi-Fi combo module, and a
digital signal processor (DSP) that features a two-microphone array for noise reduction and
echo cancelation, as well as a Coder-Decoder (CODEC) that includes two pairs of DACs &
ADCs with high sampling rates.
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1.2. Hardware Resources

1. USB Power Port
Provides power supply to the whole system. It is recommended that the system be
connected to a power adapter for sufficient current supply.
2. ESP32-WROVER-B module
This is a powerful, general-purpose, Wi-Fi+BT+BLE dual core MCU module, targeting a
wide variety of applications ranging from low-power sensor networks to the most
demanding tasks, such as voice encoding/decoding, music streaming and runs voice
assistant client SDK.
Espressif
Figure 1-1. ESP32-LyraTD-SYNA
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1.Overview

Overview
2019.09