Gravity: Text to Speech Voice Synthesizer Module V2.0
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Gravity: Text to Speech Voice Synthesizer Module V2.0
The Gravity Speech Synthesizer Module V2.0 enables seamless voice functionality for a variety of embedded projects. It supports both Chinese and English with natural, clear pronunciation, making it an excellent choice for multilingual applications. The module includes both I2C and UART interfaces and is compatible with most major development boards, including Arduino, ESP32, micro:bit, Raspberry Pi, and LattePanda.
An onboard speaker eliminates the need for external audio hardware, allowing fast and simple deployment. When combined with a speech recognition module, it can support interactive voice-controlled systems. This makes the module ideal for text-to-speech conversion, robotic voice applications, educational tools, and audio prompts.
Key Features
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Supports speech synthesis in both Chinese and English, including mixed-language reading
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Integrated speaker simplifies setup and reduces the need for additional components
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Compatible with I2C and UART communication for easy integration with various microcontrollers
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Offers multiple text control identifiers for more natural, accurate speech output
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Improved pronunciation quality with fewer errors in polyphonic characters
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Gravity interface design ensures simple and stable hardware connections
V2.0 Functional Enhancements
This version delivers a more realistic voice experience with improved tone and clarity. It also minimizes mispronunciations of polyphonic characters and simplifies the interface by removing the option to select between different voice personas, making configuration more straightforward.
Applications
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Robot voice systems for interactive robotics
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Voice broadcast for public address or informational devices
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Smart voice prompts for embedded or IoT applications
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Assistive text reading for accessibility or learning purposes
Technical Specifications
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Power Supply: 3.3V – 5V
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Operating Current: Less than 160mA
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I2C Address: 0x40
Note: This address conflicts with the micro:bit motor driver, so they cannot be used together. -
Operating Temperature: -40°C to 85°C
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Dimensions: 42mm x 32mm / 1.65" x 1.26"
Connection Options
The module supports both I2C and UART connections, offering flexibility based on the needs of your project. I2C is ideal for shared bus systems with multiple devices, while UART is best for simple, direct serial communication. Reference diagrams show detailed wiring configurations for each connection type with Arduino boards.
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Reference
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Effective Date: March 27, 2025
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