ASR Pro Voice Control Board
$8.001pcs
The ASR-PRO is a module that controls external loads via voice commands. It has built-in voice recognition and DIY functions, allowing you to modify voice content, recognition content, and serial port activation status through software.
| Dimensions | 38 × 33 mm |
|---|---|
| Brand |
easyelecmodule |
3125 in stock
Product Introduction
The ASR-PRO development board is a module that controls various output serial ports through voice recognition. It has a built-in microphone for voice input; the voice content is processed and recognized by the main control IC. After successful recognition, the status of each output serial port can be controlled according to the adjusted configuration. The software configuration is easy to modify, and it supports Chinese and English recognition, with rich functions and customizable settings.
Product Features
- Built-in Neural Network Processor: Supports hardware acceleration for neural networks such as DNN, TDNN, RNN, and convolution operations (not software-based processing).
- Comprehensive Voice Functions: Enables voice recognition, voiceprint recognition, speech enhancement, voice detection, single-microphone noise reduction, single-microphone echo cancellation, and 360° omnidirectional sound pickup.
- Versatile Peripheral Connectivity: Supports connection to a wide range of external devices with a single chip.
- Multiple Development Modes: Suitable for users at all levels, from beginners to professionals:
Multiple Development Modes
Suitable for users at all levels, from beginners to professionals:
Basic Version
“Type-and-go” programming. Modify wake words, command words, and set GPIO output (high/low level, pulse, PWM) or serial input/output—no advanced skills required.
Standard Version
Use graphical programming software to modify workflows. Supports controlling multiple devices with one trigger word and basic programming commands (like delay, output mode adjustment, pin status setting, and modification of recognition/trigger voice content).
Professional Version
Configurable multiple trigger and control logics, ideal for users with in-depth knowledge. Freely adjust trigger logic and content.
Development Support: Supports C++ development and expansion library development.
Note: The development board can be connected directly via USB for configuration modification. The core board requires a serial-to-USB adapter (like CH340) for serial communication to modify configurations.
PINOUT
The ASR-PRO has rich pin functions. The output of corresponding serial ports can be modified via programming. TXD and RXD pins can be used to communicate with microcontrollers for feedback, enabling DIY of more complex systems.
The voice module communicates with other MCUs through coarse mouthpiece and other communication methods
Connect PA5 (of the module) to the MCU’s RX pin and PB6 (of the module) to the MCU’s TX pin. It supports communication with all MCUs that have TXD and RXD serial ports.
Dimension
ASR Pro Voice Control Board
Demo Video
Electrical Parameter
- ASRPRO Chip Parameters
| Parameter | Specification |
|---|---|
| Recognition Accuracy | ≥ 98% |
| Recognition Distance | Up to 10 meters |
| Recognition Response Time | < 0.1 s |
| System Clock Frequency | 240 MHz |
| SRAM | 640 KB |
| Flash | Built-in 2 MB / 4 MB options |
| Algorithms | Supports DNN / TDNN / RNN and other neural network algorithms; supports speech recognition, acoustic recognition, speech enhancement, speech detection, single-microphone wind noise suppression, single-microphone echo cancellation, and 360° omnidirectional audio processing. |
| Clock Source | Built-in high-precision RC oscillator, no external crystal or capacitor required; temperature drift < 2% |
| UART Interfaces | 3 channels, supports baud rate up to 3 Mbps |
| I2C Interface | 1 channel, supports external I2C device expansion |
| PWM Interfaces | 6 channels, can directly drive lighting and motor applications |
| GPIO | 10 channels; can be used as a main control IC; some GPIOs support wide-voltage 5V logic signals directly, no external level shifter required |
| Power Supply Range | 3.6V – 5V, supply current > 500 mA |
| Operating Temperature | -40°C ~ +85°C |
| Storage Environment | -40°C ~ +100°C, < 5% RH |
ASRPRP Development Board
| Item | ASRPRO-2M | ASRPRO-4M |
|---|---|---|
| Module Model | ASRPRO-2M | ASRPRO-4M |
| Dimensions | 30 × 28 (±0.2) mm | |
| Operating Temperature | -40°C ~ +85°C | |
| Storage Environment | -40°C ~ +100°C, <5% RH | |
| Power Supply Range | 3.6V – 5V, supply current > 500 mA | |
| Supported Interfaces | UART / I2C / PWM / SPI / GPIO | |
| Available IO Pins | 10 | |
| UART Baud Rate | Default 9600 bps | |
| SPI Flash | 2 MB (internal) | 4 MB (internal) |
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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