Ai-Thinker VC-01 Intelligent Offline Voice Module
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Ai-Thinker VC-01 Intelligent Offline Voice Module
The VC-01 is an advanced offline voice recognition module powered by the US516P6 chip. It supports Chinese and English control commands and delivers highly accurate speech recognition with a customizable wake-up word feature. This module is designed to meet the needs of smart devices, offering an easy-to-use RTOS-based SDK for seamless integration.
Features
- Core Chip: Powered by the US516P6 chip, ensuring reliable and fast voice recognition.
- Multilingual Support: Supports both Chinese and English control commands.
- Customizable Pin Header: The VC-01 supports customizable pin header welding for easy integration into various devices.
- High Recognition Accuracy: Achieves a recognition rate of over 98% for reliable performance.
- Fast Recognition Time: The recognition process takes less than 100ms.
- Long-Range Wake-Up: Supports wake-up distance of up to 5 meters, ideal for voice control in larger environments.
- Customizable Command Vocabulary: Supports up to 150 custom command words.
- Wake-Up Word Learning: The system can learn wake-up words without the need to recompile firmware.
- Offline Recognition: Performs offline voice recognition without requiring an internet connection.
- RTOS SDK: Provides a complete SDK based on RTOS for easy development.
- AEC Echo Cancellation & Noise Reduction: Supports AEC (Acoustic Echo Cancellation) and steady-state noise reduction for clearer audio input.
- MIC Input & Dual DAC Output: Supports single MIC input and dual-channel DAC output for high-quality audio output.
Specifications
| Parameter | Details |
|---|---|
| Core Chip | US516P6 |
| Voice Recognition Rate | 98% or higher |
| Recognition Time | <100ms |
| Wake-Up Distance | >5 meters |
| Custom Commands | Supports up to 150 commands |
| Wake-Up Word Learning | No need for firmware recompilation |
| Voice Recognition | Offline, no internet required |
| SDK | Based on RTOS |
| Noise Cancellation | Supports AEC and steady-state noise reduction |
| MIC Input | Single MIC input |
| DAC Output | Dual-channel DAC output |
Key Features
- Core Chip: Powered by the US516P6 chip, ensuring reliable and fast voice recognition.
- Multilingual Support: Supports both Chinese and English control commands.
- Customizable Pin Header: The VC-01 supports customizable pin header welding for easy integration into various devices.
- High Recognition Accuracy: Achieves a recognition rate of over 98% for reliable performance.
- Fast Recognition Time: The recognition process takes less than 100ms.
- Long-Range Wake-Up: Supports wake-up distance of up to 5 meters, ideal for voice control in larger environments.
- Customizable Command Vocabulary: Supports up to 150 custom command words.
- Wake-Up Word Learning: The system can learn wake-up words without the need to recompile firmware.
- Offline Recognition: Performs offline voice recognition without requiring an internet connection.
- RTOS SDK: Provides a complete SDK based on RTOS for easy development.
- AEC Echo Cancellation & Noise Reduction: Supports AEC (Acoustic Echo Cancellation) and steady-state noise reduction for clearer audio input.
- MIC Input & Dual DAC Output: Supports single MIC input and dual-channel DAC output for high-quality audio output.
Technical Specifications
| Parameter | Details |
|---|---|
| Core Chip | US516P6 |
| Voice Recognition Rate | 98% or higher |
| Recognition Time | <100ms |
| Wake-Up Distance | >5 meters |
| Custom Commands | Supports up to 150 commands |
| Wake-Up Word Learning | No need for firmware recompilation |
| Voice Recognition | Offline, no internet required |
| SDK | Based on RTOS |
| Noise Cancellation | Supports AEC and steady-state noise reduction |
| MIC Input | Single MIC input |
| DAC Output | Dual-channel DAC output |
Pinout Description
| Pin Number | Pin Name | Function Description |
|---|---|---|
| 1 | VCC | 3.6V-5V power input |
| 2 | GND | Ground |
| 3 | TX1 | GPIO_B6/UART1_TXD, 3.3V logic level |
| 4 | RX1 | GPIO_B7/UART1_RXD, 3.3V logic level |
| 5 | IOB8 | IO/Virtual UART TX |
| 6 | IOA27 | IO/US_SPI_MOSI |
| 7 | 3V3 | 3.3V digital output |
| 8 | GND | Ground |
| 9 | SCL_3.3 | I2C communication (3.3V)** |
| 10 | SDA_3.3 | I2C data input (3.3V)** |
| 11 | SCL_5V | I2C communication (5V)** |
| 12 | SDA_5V | I2C data input (5V)** |
| 13 | IOA25 | IO/ADC4/SPI_MISO |
| 14 | MIC- | Microphone Input (Negative) |
| 15 | MIC+ | Microphone Input (Positive) |
| 16 | IOA26 | IO/ADC5/SPI_CLK |
| 17 | DAC_L | Audio Output (Left channel) |
| 18 | DAC_R | Audio Output (Right channel) |
| 19 | SPK- | Speaker Negative terminal |
| 20 | SPK+ | Speaker Positive terminal |
Applications
- Smart Home Devices: For controlling devices such as lights, thermostats, and security systems via voice.
- Wearable Electronics: Integrate the module into fitness trackers, smartwatches, and other wearable tech for voice control.
- Voice-Controlled Gadgets: Can be embedded in various consumer electronics to allow hands-free control.
- Offline Voice Assistance: Provide offline speech recognition in devices without requiring an internet connection.
- Industrial and IoT Applications: Use the module for voice control in industrial settings, machinery, or IoT-connected devices.
Product Details
vc-01_v1.0.0_specificationEffective Date: March 27, 2025
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