Abstract: Designs a new voice module based on the domestic Internet of things operating system and equipped with domestic dedicated voice chip and lightweight Wi-Fi chip. Through the reasonable selection of electronic components and the peripheral circuit design of voice module, the hardware resources of voice module can be fully utilized, and the efficient recognition performance of voice system can be guaranteed as much as possible while reducing the cost. The speech recognition algorithm is customized according to the hardware characteristics of the speech module to ensure that it can meet the needs of the product speech recognition performance. Because of its low cost, low power consumption and high performance, voice module is easy to be widely used in the field of household appliances.

Key words: Domestic voice chip, Internet of things operating, Front end noise reduction, Voice performance, Air conditioning application