# ReSpeaker Lite - USB 2-Mic Array (No ESP32)

**Type:** Product page · **SKU:** SS107990273 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia)
**Page:** https://core-electronics.com.au/respeaker-lite-usb-2-mic-array-seeed-studio.html ([markdown](https://core-electronics.com.au/respeaker-lite-usb-2-mic-array-seeed-studio.html.md))

For applications where you might want to use the USB output into a Pi!

## Pricing

- **Price:** $42.60 (inc GST) — $38.73 AUD, exc GST
- **Quantity discounts:** 10+ $37.18 (exc GST) · 25+ $36.02 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 50 more in 8–10 days.

## Description

ReSpeaker Lite does not come with a MCU for data access and transmission (eg. a [XIAO ESP32S3](https://core-electronics.com.au/seeed-studio-xiao-esp32s3.html)), and it is only for audio processing with XMOS's XU316. If you want to buy a complete Voice Assistant Kit, please visit [here](https://core-electronics.com.au/respeaker-voice-assistant-maker-kit-2-mic-array-kit-with-acrylic-and-esp32.html). The kit offers options for different ReSpeaker Lite models, Speaker, and acrylic enclosures.

- **Dual Microphone Array for Far-Field Voice Capture**: The 2 high performance digital microphones capture and extract far-field speech and voice (up to 3 meters) even in noisy environments as it cancels point noise using two microphone input.
- **Onboard Audio front-end Algorithms::** Powered by XMOS XU-316 AI sound and audio chip, the kit includes Natural Language Understanding algorithms for Interference Cancellation (IC) , Acoustic Echo Cancellation, Noise Suppression, Voice-to-Noise Ratio (VNR), and Automatic Gain Control (AGC), enabling high quality voice capture.
- **Embracing Open Source:** This board is compatible with popular hardware platforms (XIAO ESP32S3 (Sense), Adafruit QT Py) via I2S, and compatible with Raspberry Pi, PC via USB (Audio Class 2.0 (UAC2)).
- **Onboard RGB LED:** The board features a programmable WS2812 RGB LED, supporting custom effects and offering a visual interface for your applications.
- **External Power Supply Support**: this board supports external 5V power supply, which can be flexibly applied in different scenarios.
- **DFU for Custom Development:** the board supports custom firmware update via DFU-Util.

### Specification

| **Core Chip** | XMOS XU316 |
|---|---|
| **Digital Microphones** | High-performance digital microphones \* 2 |
| **Sensitivity** | -26 dBFS |
| **Acoustic Overload Point** | 120 dBL |
| **SNR** | 64 dBA |
| **Power Supply** | USB 5V, external 5V |
| **Dimensions** | 35\*86 mm |
| **Audio Output** | Speaker Connector / 3.5mm Headphone jack |
| **Maximum Sampling Rate** | 16Khz |
| **Speaker** | Supports 5W amplifier speakers. |

### Hardware Overview

![](https://core-electronics.com.au/attachments/localcontent/image-9_393091e9ceb.png)

![](https://core-electronics.com.au/attachments/localcontent/image-10_4455276cb0d.png)

| **1** | **Dual Microphone Array** | Provides high-quality audio input. |
|---|---|---|
| **2** | **Power Indicator Light** | Illuminates when powered on. |
| **3** | **RGB Light** | Programmable WS2812, provides visual interface |
| **4** | **Mute Indicator Light** | Lights up red when the mute button is pressed. |
| **5** | **USR Button** | User-defined button. |
| **6** | **Mute Button** | Mutes audio input when pressed. |
| **7** | [**XIAO ESP32S3**](https://core-electronics.com.au/seeed-studio-xiao-esp32s3.html) **(optional)** | For further development and integration. |
| **8** | **XU316 Core Processor** | Responsible for audio processing and transmission. |
| **9** | **External Power Supply Solder Pad** | Supports external 5V power supply. |
| **10** | **USB Type-C Port** | Used for power and data transmission. |
| **11** | **Speaker Connector** | For audio output. Supports 5W amplifier speakers. |
| **12** | **3.5mm Headphone jack** | Output audio, We can plug active speakers or Headphones into this port. |
| **13** | **External power pad 1** | Unused IO pins on the XIAO ESP32. |
| **14** | **External power pad 2** | Unused IO pins on the XU316. |
| **15** | **JTAG** | For debugging and programming the XU316. |

![](https://core-electronics.com.au/attachments/localcontent/107990273HO_136960a7413.png)

Application

- **Far-Field Voice Control**
- **Offline Voice Processing**
- **Local Command Processing**
- **Custom Wake-Up Words**
- **Low Power Voice Offload**
- **Industrial Voice Control**
- **Voice Recognition and Control for Home Assistant,** Google Assistant, Amazon Alexa and more![](https://core-electronics.com.au/attachments/localcontent/image-11_336946581b8.png)

### Documents

- [Product-Brief of XMOS XU316](https://www.xmos.com/file/xcore-voice-product-brief/?version=latest)
- [Schematic diagram of ReSpeaker Lite](https://core-electronics.com.au/attachments/localcontent/respeaker_lite_v1_214951dd59e.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/S/SS107990273-6.jpg)