HLK-V20 is the latest high-performance pure offline speech recognition module for a large number of pure offline control scenarios and products. It can be widely and quickly applied to smart homes, various smart small appliances, 86 boxes, toys, lamps, industrial, medical, Products that require voice control, such as the Internet of Things, automobiles, security and lighting. The module uses a 32bit RSIC architecture core, and adds a DSP instruction set specifically for signal processing and speech recognition, an FPU arithmetic unit that supports floating-point operations, and an accelerator. The audio signal is trained and learned through the neural network to improve signal Recognition ability. The solution supports offline recognition of 150 local commands, can freely customize words, words and response broadcast words, and has a wealth of peripheral interfaces. Add a relay to the bottom plate to control high-power electrical appliances. 1.Processing : 32bit RISC core, running frequency 240M Support DSP instruction set and FPU floating point arithmetic unit accelerator: supports up to 1024 points of complex /IFFT operations or 2048 points of real /IFFT operations Calculate Customized speech algorithm operator 2.storage: Built-in high-speed SRAM Built-in 2MB FLASH 3.Audio input and output: Support 1 analog Mic input Support dual channel DAC output Support I2S input/output Material:PCB colour:Green + black Package Contents: 1 x Switch module Only the above package content, other products are not included. Note: Light 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.