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Overview
ESP32-LyraTD-DSPG is one of Espressif’s Audio Development Board based on ESP32 MCU and DBMD5P DSP. It is an Acoustic Echo Cancelation (AEC) solution supporting voice recognition, near-field and far-field 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).
ESP32-LyraTD-DSPG is based on ESP32-WROVER-B, a BT/Wi-Fi combo module, and a digital signal processor (DSP) that features a three-microphone array for noise reduction,echo cancelation, beam-forming and detection. ESP32-LyraTD-DSPG is integrated with peripheral devices and consists of two development boards. The sub board mainly consists of the microphone array, function keys and LEDs. The main board is integrated with power management, Wi-Fi and audio modules like DSP, Codec and power amplifier. The two boards can be connected with FPC interface.
Hardware Resources
1. USB power input
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.
3. DBMD5P DSP
DBMD5P is a dual core, programmable voice processor which supports various functionalities such as voice trigger (VT), voice commands, voice authentication (VA),acoustic echo cancellation (AEC). This audio DSP is used for wake-word detection. It
captures audio data from an external array of three digital microphones.
4. Audio codec
E8388 audio codec is used for digital audio conversion to analog audio output.
5. Audio amplifier
This audio power amplifier sends audio signals from the Codec to external speakers for playback.
6. CP2102N USB-to-UART Chip
An upgraded version of the CP2102 chip supports USB-to-UART conversion.
7. USB Port
This is a normal USB communication port between PC and the main board.
8. Earphone Connector
Used for plugging in earphones/headphone. Audio output is via Codec.
9. Speaker Connector
Supports one external speaker output via Power Amplifier.
10.FPC connector
This connection is used for connecting external sub board consisting of microphone array, buttons and LEDs via flex cable.
11.Mini Din connector
This connection can be used for connecting the microphone cable, if there is such a requirement. By default, this connector is not mounted on the main board.
12.Sub board
Sub board consists of LEDs and LED driver along with function keys and Mic array connected via FPC cable.
Package Included
1 x ESP32-LyraTD-DSPG Development Board
Additional information
| Weight | 0.107 kg |
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