AI-Thinker VC-01 Offline Voice Recognition Module
The AI-Thinker VC-01 is a low-cost, pure offline speech recognition module built around the Unisound US516P6 chip, featuring a 240MHz 32-bit RISC core with DSP and FPU for embedded voice control applications.
Features
- Offline recognition of 150 local voice commands without cloud dependency.
- Powered by Unisound US516P6 chip with 240MHz 32-bit RISC core, DSP, and FPU.
- Integrated FFT accelerator for efficient 1024-point complex FFT/IFFT operations.
- Rich peripheral interfaces including UART, I2C, PWM, SPI, and GPIO for easy system integration.
- Compact SMD-24 package (25.5 x 24mm) with wide operating temperature range (-40°C to 85°C).
Out of stock
The VC-01 module from AI-Thinker provides a dedicated hardware solution for adding offline voice control to IoT devices. It leverages the Unisound US516P6 system-on-chip, which deeply integrates a custom speech recognition algorithm operator with a high-performance 32-bit processor core, enabling rapid, on-device command parsing.
Designed for cost-sensitive mass production, the module operates on a 3.6V to 5V supply and includes 2MB of built-in SPI Flash. Its architecture supports a lightweight RTOS and offers a full suite of serial and digital interfaces, allowing developers to seamlessly add voice triggers to smart home appliances, toys, and lighting systems without relying on network connectivity.
Additional Information
| Weight | 0.004 kg |
|---|---|
| Dimensions | 2.55 × 2.4 × 0.32 cm |














