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Smart Speaker
Application Overview
Realtek Smart Speaker: Multi-Mode Input, Seamless Sharing

The widespread adoption of speaker devices provides users with excellent audio experiences. The Realtek smart speaker supports multiple audio input modes, including wireless connections like Bluetooth and wired connections like USB, Line-in, SPDIF, and I2S. This device not only supports local audio playback but can also share music in real-time with other devices, achieving seamless music sharing. Its design balances convenience and flexibility, making it suitable for various occasions and providing users with an efficient and enjoyable audio experience.

System Structure

The Realtek smart speaker uses a single Bluetooth SoC as the primary speaker and supports multiple audio input methods including Bluetooth, Line-in, USB, and SPDIF. While playing audio locally, the primary speaker can also synchronize and transmit audio to multiple secondary speakers, achieving coordinated audio coverage. Users can easily control the entire system via the primary speaker or any secondary speaker, including functions such as play/pause, volume adjustment, and track switching, making operation simple and efficient.

Application Structure

Application Scenario

The application of speakers in sports settings
Application Scenario
All-in-One Sports Speaker System

The system provides an excellent audio experience for a variety of sports scenarios. In gyms, multiple speakers synchronize to play dynamic music, creating an intense workout atmosphere that enhances participants' motivation. In outdoor environments, by intelligently deploying speakers at different locations, the system can provide stable and even audio coverage for large group events, ensuring that every participant, no matter where they are, can clearly hear activity instructions and background music.

The application of speakers in party scenarios
Application Scenario
Immersive Party Speaker System

The system can provide an ideal audio experience for various parties. The primary speaker is positioned in the center of the venue, serving as the main sound output device. Multiple secondary speakers are strategically distributed throughout the venue to achieve full-range sound coverage, ensuring that every listener can enjoy a consistent audio experience. Efficient synchronization is maintained between the primary speaker and all secondary speakers, allowing for smooth, latency-free music playback, resulting in a coordinated and unified high-quality sound.

Advantages of Solution

Application Advantages
Realparty

A single chip is not only capable of receiving various inputs for local playback, but can also transmit audio to other speakers for listening.

Application Advantages
Switch Between Primary and Secondary Speakers

The roles of the speakers are not fixed, the primary and secondary speakers can be switched freely.

Application Advantages
Multiple Audio Input

Supports multiple audio input interfaces such as USB, Line-in, SPDIF, I2S, and MIC.

Application Advantages
Microsecond-Level Synchronization

The synchronization playback precision between the primary speaker and all secondary speakers can reach within 50 microseconds.

Application Advantages
Mode Switch

The system supports Party Mode (one-to-many) and TWS Mode (one-to-one), allowing users to switch between different modes to meet diverse usage needs.

Application Advantages
Complete Development Kit

Provides a fully functional SDK development package, including a complete product prototype project, mobile app SDK, OTA tools, and production tools, to reduce customer development efforts and accelerate project implementation.

Recommended Hardware

Choose the SoC that suits your design requirements
RTL8763EFL RTL8763EWS/ RTL8763EWM RTL8773DFL RTL8763GWS
MCU CM33 like CM33 like CM4F CM55
DSP HiFi Mini HiFi Mini HiFi Mini + HiFi 4 HiFi Mini
MCM Flash Size 4MB 4MB 8MB 4MB
SRAM 532KB shared 532KB shared 4MB shared 928KB
Max MCU Clock 100MHz 100MHz 160MHz 200MHz
Max DSP Clock 200MHz 200MHz 320MHz 260MHz
Protocol Legacy/BLE/LEA Legacy/BLE/LEA Legacy/BLE/LEA Legacy/BLE/LEA
LC3 Y Y Y Y
LC3+ N N Y N
Max GPIO number 9 38 >50 42
USB N Y Y Y
I2S Y Y Y Y
SPDIF N N Y N
Line in Y Y Y Y
MIC Resource 2A + 4D 2A + 4D 4A + 6D 2A + 4D
Package (mm) QFN40, 4x6 QFN76, 7x7 BGA184, 4.6x6 QFN68, 7x7
Contact Us
If you are interested in the above products, please contact our REALTEK sales or ask our customer support team for more information.