AI Voice Interaction Module Overview

AI Voice Interaction Module — Keyword Wake-Up | Chinese & English Recognition | Custom Vocabulary/Parameters

110+ preset voice interaction commands
Integrated recognition and playback design
Custom voice vocabulary support
6-meter long-range recognition
99% recognition accuracy
360-degree omnidirectional pickup
Echo cancellation & noise reduction fidelity
Offline recognition
Environmental noise reduction

Key Features — AI Voice Interaction

KWS keyword recognition wake-up
Voice broadcast playback
Bilingual Chinese & English recognition
360-degree omnidirectional microphone
High-fidelity speaker
Custom vocabulary & parameters
Intelligent echo cancellation & noise reduction
6m long-range recognition
High recognition accuracy
Comprehensive development tutorials included

AI Voice Interaction Module Introduction

The Voice Interaction Module integrates voice recognition and voice playback in a single unit. It features a built-in microphone and speaker, along with a powerful neural network processor that supports convolutional neural network operations and deep learning noise reduction, delivering robust echo cancellation and environmental noise suppression. New command words can be added via software, with recognition accuracy up to 99%. It supports both Chinese and English entries, making AI voice interaction accessible even for beginners!

The voice module features multiple onboard interfaces. Without needing to understand the underlying principles of voice recognition, you can easily generate firmware using the companion software and update it via the Type-C interface. Additionally, the module provides serial and IIC interfaces, supporting voice interaction projects with platforms such as STM32, MSPM0, and Raspberry Pi. We have preloaded 110+ voice interaction command sets and provide detailed user tutorials, firmware modification guides, and programming tools to accelerate project development — making it the ideal choice for embedded voice projects.

Voice Recognition Features

The Voice Interaction Module features 2MB of built-in storage and comes preloaded with 110+ voice interaction command sets covering a wide range of scenarios. It also supports user-defined interaction command configurations to meet personalized application needs.

1. Zero-Basics, Easy to Use

When a user issues a voice command, the voice module recognizes it and sends the command to the main controller, which then directly executes the corresponding action and drives the voice module to complete the broadcast content. The entire process is simple and easy to use.
2. Efficient Configuration, Convenient Operation

Voice commands can be used to modify the module's recognition commands, allowing efficient wake-up word changes, volume adjustment, and broadcast content modification.
3. Extensive Command Library, Ready Out of the Box

For user convenience, we have preset 110+ voice interaction commands covering diverse scenarios, significantly shortening the development cycle and enabling efficient project development!

Custom Voice Recognition Command Configuration

We provide complete firmware modification tutorials and programming tools, supporting deep customization to meet secondary development needs.

&circled1; Custom Voice Tone
&circled2; Custom Vocabulary

Add or modify wake-up words, command words, and broadcast phrases. Flexibly configure protocols and confidence thresholds.
&circled3; Custom Parameters

Recognition sensitivity (High/Medium/Low), echo cancellation (On/Off), wake-up duration, output mode, and other parameters are all adjustable.
&circled4; Firmware Programming Tool Included

Simple operation with support for firmware upgrades and parameter saving. Even beginners can get started quickly.

Technical Features — Voice Recognition

01 Bilingual Chinese & English Recognition, Fully Custom Vocabulary

Flexibly configure single or multiple wake-up words to suit different user habits and scenario needs. Recognition is fast and accurate, precisely capturing both Chinese and English wake-up commands while balancing accuracy and interference resistance. No complex configuration required — easily achieve personalized wake-up for a more intuitive human-robot interaction experience.
02 Multiple Voice Broadcast Modes

Supports wake-up word recognition with automatic voice broadcast triggering, as well as active voice broadcast via an external host controller. The two modes can be flexibly switched.
03 Natural Conversation with Echo Cancellation

During broadcast, wake-up words or commands can interrupt the current playback process, allowing the voice module to respond instantly and broadcast the latest command content, delivering a more fluid and natural human-machine interaction experience.

Hardware Features — Voice Module

01 Integrated Design, Simplified Development

The module integrates a high-performance noise-reduction microphone and a high-fidelity speaker, achieving integrated voice recognition + voice playback functionality. This greatly simplifies the development process and hardware deployment costs for AI voice interaction systems, allowing quick setup of voice interaction solutions without additional audio peripherals.

High-fidelity speaker: Delivers clear sound quality with accurate voice detail reproduction. Built-in and external versions available.

High-performance noise-reduction microphone: Integrated with advanced noise suppression algorithms, achieving up to 99% recognition accuracy within a 6m range.
02 High-Precision Voice Recognition Module

Utilizing advanced noise suppression algorithms, it effectively filters background environmental noise and supports long-range wake-up word recognition up to 6 meters, ensuring precise and efficient voice command control with accuracy as high as 99%.
03 Broad Compatibility, Driver-Free

Integrated Type-C interface with driver-free plug-and-play operation. Can be paired with embedded hosts such as Raspberry Pi via USB connection, reducing pin usage. Compatible with Mac OS, Windows, Linux, and other operating systems.
04 Multi-Controller and Expansion Board Support

Compatible with mainstream controllers including Raspberry Pi, Jetson, and RDK, enabling flexible hardware expansion and versatile combinations. Unlock more creative possibilities for your robots — making idea implementation easier and robot interaction more engaging!

Voice Module Wiring Diagram

1. Voice Interaction Module — Serial Communication Wiring Diagram

AI Voice Interaction Module connected to Raspberry Pi diagram
AI Voice Interaction Module connected to Jetson Orin diagram

2. Voice Interaction Module — IIC Communication Wiring Diagram

AI Voice Interaction Module connected to Raspberry Pi diagram
AI Voice Interaction Module connected to Jetson Orin diagram

3. Voice Interaction Module — Type-C Communication Wiring Diagram

Integrated Type-C interface with driver-free plug-and-play operation, convenient for firmware updates. Can be paired with embedded hosts such as Raspberry Pi via USB connection, reducing pin usage.

AI Voice Interaction Module connected to Raspberry Pi diagram
AI Voice Interaction Module connected to Jetson Orin diagram

AI Voice Module ROS1 & ROS2 Support

The Voice Interaction Module supports both ROS1 and ROS2.

Application Scenarios for AI Voice Module

Smart home, robotics applications, programmable robot dogs, sensor interaction solutions

Voice Module Hardware Interface

No.	Hardware Name / Description
1	Speaker — Converts analog signals to sound
2	Slide Switch — Switches serial port for firmware programming
3	Microphone — Converts sound to analog signals
4	RST Button — Reset button
5	Power Indicator (Red) — Stays on when power is normal
6	Type-C Interface — For power supply and CI1302/STC8 firmware update/download
7	Audio Amplifier Chip — Converts digital signals to analog signals for driving the speaker
8	CI1302 Chip — High-performance voice recognition chip; recognizes speech and outputs signals
9	Reverse Polarity Protection — Protection against 5V/GND reverse connection
10	IIC Interface — Operates as slave for power supply and communication with host device
11	Serial Interface — External serial port for protocol-based broadcast control
12	STC8H Chip — Converts voice chip commands into IIC protocol and serial commands

AI Voice Module Specifications

Chip Model	CI1302 (ChipIntelli)
Power Supply Voltage	DC 5V
RAM	640KByte
FLASH	2MByte
Recognition Mode	Command wake-up
Communication Method	IIC communication (4-pin connection to host), Serial communication
Recognition Range	Maximum 6 meters in quiet environments; 1 meter in noisy environments
Recognition Requirements	Recognizes fixed command phrases; up to 255 phrases or short sentences supported. Recognition phrases can be modified via firmware.
Preset Command Count	110+ command phrases (up to 120 max)
Default Wake-Up Word	"Hello, Little Rhino"

AI Voice Module Part List

Voice Interaction Module	1x (main module)
Type-C Data Cable	1x (for power and communication)
PH2.0 4-Pin Cable (20cm)	1x (for serial connection)
PH2.0 4-Pin to Dupont Cable (20cm)	1x (for UART connection)

AI Voice Recognition Module — Keyword Wake-Up, Bilingual Speech, 110+ Commands