LE Audio broadcast speaker is a speaker device that supports low-power Bluetooth audio (LE Audio) transmission. The following is a possible development solution: Hardware part: Select a Bluetooth audio chip that meets the LE Audio standard, such as Cypress CYW20721; Add audio input and output interfaces, such as microphones and speakers; Design and manufacture the casing, and incorporate characteristic design elements such as LED light strips; Add power management and charging circuits.

Software part:

Implement Bluetooth audio connection and decoding functions, support standard LE Audio codecs, such as LC3 codecs;

Design and implement a graphical user interface so that users can control music playback, adjust volume, and sound effects parameters;

Implement functions such as timed shutdown and power saving mode to maximize battery life;

Add voice assistant function to support users to control devices through voice commands.

In addition, the development team also needs experience and capabilities in audio processing, embedded system development, and Bluetooth communication technology. Overall, the development of LE Audio broadcasting speakers requires both software and hardware aspects, and requires a team with high technical level and innovative ability.