SYN6988 Speech Synthesis TTS Module – UART/SPI Text-to-Speech
₹2,948.82 incl. GST (₹2,499.00 + GST)
SYN6988 Speech Synthesis TTS Voice Module is a versatile Text-to-Speech module supporting English and Chinese voice synthesis, UART and SPI communication, and up to 4,000 bytes of text input. With standby mode and included USB-to-TTL converter, it is ideal for Arduino, ESP32, robotics, smart home, automated announcements, and voice-enabled projects.
SYN6988 Speech Synthesis TTS Voice Module – UART & SPI Text-to-Speech Module
Product Description
The SYN6988 Speech Synthesis Module is a high-performance Text-to-Speech (TTS) voice module designed to convert written text into clear and natural-sounding speech. It supports English and Chinese speech synthesis, making it suitable for interactive robots, smart devices, automated announcements, assistive technology, and embedded voice applications.
The module provides both UART and SPI communication interfaces, allowing easy integration with Arduino, ESP32, STM32, Raspberry Pi, PC systems, and other compatible controllers. Its large text buffer can process up to 4,000 bytes of text in a single synthesis request, making it suitable for longer messages and spoken data without frequent command segmentation.
The SYN6988 also includes a standby mode for reducing power consumption in battery-powered applications. The included USB-to-TTL converter board allows users to test and send speech commands directly from a computer before integrating the module into a microcontroller-based project.
Features
- High-quality Text-to-Speech (TTS) synthesis
- Supports English and Chinese speech synthesis
- Natural and clear human-like voice output
- UART and SPI communication interfaces
- UART baud rates from 4800 to 115200 bps
- Supports up to 4,000 bytes of text per synthesis request
- Built-in standby mode for lower power consumption
- Compatible with Arduino, ESP32, STM32, Raspberry Pi, and PC
- Compact module design for embedded applications
- Suitable for interactive voice and announcement systems
- Included USB-to-TTL converter for convenient testing
- Ideal for robotics and smart-device applications
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Speech Synthesis / Text-to-Speech Module |
| Model | SYN6988 |
| Synthesis Type | Text-to-Speech (TTS) |
| Communication | UART, SPI |
| Baud Rate Support | 4800, 9600, 57600, 115200 bps |
| Text Buffer Size | 4,000 Bytes |
| Voice Style | Clear, Natural Human Voice |
| Supported Languages | English, Chinese |
| Power Modes | Active & Standby |
| Compatibility | Arduino, ESP32, STM32, Raspberry Pi, PC |
Working Principle
The SYN6988 receives text commands from a connected controller through its UART or SPI interface. The internal speech-synthesis engine processes the text and converts it into an audio speech signal.
The generated voice output can then be connected to a suitable audio amplification and speaker system to produce audible speech.
The module can process up to 4,000 bytes of text in one synthesis request, allowing longer messages to be spoken without repeatedly sending small text segments.
Communication Interface
The module supports both UART and SPI interfaces for communication with external controllers.
The UART interface supports multiple baud rates, including:
- 4800 bps
- 9600 bps
- 57600 bps
- 115200 bps
This flexibility allows the module to be integrated into different embedded systems according to the communication requirements of the project.
Standby and Power Management
The SYN6988 provides an integrated standby mode that can be activated through software commands. This feature helps reduce power consumption when speech synthesis is not required.
The standby function is particularly useful for battery-powered IoT devices, portable electronics, and embedded systems where minimizing idle power consumption is important.
Audio Output
The SYN6988 provides a line-level audio output. For directly driving a speaker, an external audio amplifier module such as a suitable small Class-D amplifier may be required.
The amplifier and speaker should be selected according to the required audio volume and application.
Typical Application Scenarios
Robotics
The module can provide voice feedback for humanoid robots, biped robots, autonomous robots, educational robots, and interactive robotic systems.
Public Address Systems
Suitable for automated announcements, information systems, waiting-room announcements, machine instructions, and other voice-based notification systems.
Assistive Technology
Can be used in devices designed to read text aloud, provide spoken instructions, and assist users through audible feedback.
Industrial Alerts
Useful for replacing basic beeps with spoken messages such as system warnings, fault notifications, temperature alerts, and operating instructions.
Smart Home Devices
Can provide voice prompts and status notifications for smart appliances, security systems, automation controllers, and connected devices.
Applications
- Text-to-speech projects
- Voice-enabled robots
- Humanoid robots
- Biped robots
- Arduino voice projects
- ESP32 voice projects
- STM32 embedded systems
- Raspberry Pi voice applications
- Automated announcement systems
- Industrial voice alarms
- Assistive technology
- Smart home devices
- Voice notification systems
- Interactive kiosks
- Educational electronics
- IoT voice devices
- Custom audio projects
- Human-machine interaction systems
Resources
MicroPython Library
Click here for the SYN6988 MicroPython Library
Tutorials and Code
Click here for SYN6988 Tutorials and Code
Package Includes
- 1 × SYN6988 Speech Synthesis TTS Voice Module
- 1 × USB-to-TTL Converter Board
- 4 × Female-to-Female Jumper Wires
Product Disclaimer
Product images are shown for illustrative and representational purposes only. The actual module may vary slightly in PCB colour, component placement, connector arrangement, dimensions, or appearance depending on the manufacturing batch.
Arduino boards, ESP32 boards, Raspberry Pi boards, speakers, amplifiers, USB cables, and other accessories not specifically listed in the package contents are not included.
Voice quality, pronunciation, language support, and synthesis behaviour may vary depending on the text encoding, firmware, configuration, and connected system.
Important Notes
Audio Output
The module provides a line-level audio signal. A suitable external audio amplifier may be required to drive a speaker directly.
Text Encoding
Ensure that the text encoding and character format are compatible with the module’s requirements, particularly when using Chinese or other non-English text.
USB-to-TTL Converter
The included USB-to-TTL converter can be used to connect the module to a computer for testing speech commands and communication before integrating it into a microcontroller project.
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Frequently Asked Questions
1. What is the SYN6988?
The SYN6988 is a Text-to-Speech module that converts written text commands into synthesized speech output.
2. Which languages does it support?
The supplied product information specifies support for English and Chinese speech synthesis.
3. What communication interfaces are available?
The module supports UART and SPI communication.
4. What baud rates are supported?
The supported UART baud rates are 4800, 9600, 57600, and 115200 bps.
5. How much text can it process at once?
The module can process up to 4,000 bytes of text in a single synthesis request.
6. Can I use it with Arduino?
Yes. It can be integrated with Arduino and other compatible microcontroller boards.
7. Can I use it with ESP32?
Yes. The module can be connected to an ESP32 through a compatible UART or SPI interface.
8. Can I use it with Raspberry Pi?
Yes. It can be integrated with Raspberry Pi and other compatible embedded computers.
9. Does the module have a low-power mode?
Yes. It supports a software-controlled standby mode for reducing power consumption.
10. Can it directly drive a speaker?
The module provides a line-level audio signal, so a suitable external audio amplifier may be required for directly driving a speaker.
11. Is the USB-to-TTL converter included?
Yes. The package includes 1 × USB-to-TTL Converter Board.
12. What are the included jumper wires used for?
The four female-to-female jumper wires can be used to connect the module and included USB-to-TTL converter during testing and development.
13. Can it be used in robots?
Yes. It is especially suitable for robots that need spoken status messages, instructions, alerts, or interactive voice responses.
14. Can it be used for industrial voice alarms?
Yes. It can replace simple audible beeps with spoken warnings and status messages in suitable embedded systems.
15. Does it support MicroPython?
A MicroPython library is available for the SYN6988, which can help integrate the module into compatible MicroPython projects.Only logged in customers who have purchased this product may leave a review.
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