> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # 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. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SS107990273:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SS107990273:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## 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)