1、Versatile Connectivity Options: The voice recognition module features GPIO pins that can be configured as external interrupt inputs and wake up sources, as well as a standard SPI interface with a maximum speed of 30MHz, a full duplex UART with a maximum speed of 3Mbps (3.3V), and an I2C master or slave controller with a maximum speed of 400kHz. This allows for flexible and seamless communicating with external devices. 2、Enhanced Signal Processing Capabilities: With two PWM outputs and a 12 bits SAR-ADC boasting a maximum sampling rate of 450kHz, this speak recognition module provides accurate and efficient signal processing capabilities for a variety of applications, ensuring excellent sound playback. 3、Powerful Processing Unit: Equipped with a 32 bits RISC core running at a frequency of 240M, the voice recognition playback module supports instructions and features an FPU for floating point arithmetic operating, enabling fast and efficient data processing. 4、Advanced Functionality: The speech recognition module includes an FFT accelerator that supports complex FFT or IFFT operations up to 1024 points or real FFT or IFFT operating up to 2048 points, providing advanced signal processing capabilities for sound analysis and manipulation. 5、Wide Application: The voice playback module comes with built in high speed 2MB of flash memory for storing sound files, as well as a 2.4W single channel AB class power amplifier for clear and powerful sound output. Additionally, it features POR (Power on Reset), low voltage detection, and watchdog functionalities for reliable and safe operating. The compact offline voice recognition module that can be quickly integrated into smart home devices, various smart appliances, switches, toys, lighting fixtures, and other products requiring voice control, making it an ideal solution for a variety of applications.