High accuracy of speech recognition practical effect. Speaker-independent speech recognition technology, allowing users to operate without recording training. Dynamic editing of keyword list, enabling immediate effect in the next recognition. Users can freely edit up to 50 keywords simultaneously. The chip can identify a set of keywords based on user-defined settings, allowing flexibility in various scenarios. Integrates the LD3320 and peripheral circuits into a module. Requires an external microcontroller (such as 8051, STM32, or Arduino) for use, with example programs provided. Color: As Shown Material: PCB Specification: SPI version Package Contents: 1*module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.