It is recommended to use YQ5969, the module series can support 1-8 MI head, the voice chip can provide different solutions of single-core - 4-core 32bit ARM core according to the specific needs of customers, and can support local and cloud identification of different needs. The local recognition rate within 5 meters is more than 93%, and the cloud recognition rate is 97%. YQ5969 Speech recognition module is a small speech recognition module, with 5 meters as the target distance to solve human and natural speech interaction. The voice recognition distance can reach 10 meters in a quiet environment; External SPI Flash, increase storage capacity; The main functions are as follows: First, filter noise. Second, reverb processing. Third, repair attenuation. After the speech collected by the microphone array, after the above signal processing, it is also necessary to match the speech recognition engine enough to make the speech recognition model consistent with the signal processed, so as to achieve the best recognition effect.