The key operation of smart speakers are the voice recognition technology used for those devices. Using voice recognition technology, it is possible for the smart speaker to understand what is being said and act upon the instructions.Different manufacturers use different voice recognition method, Apple uses it's Siri assistant voice recognition, Microsoft uses Cortana, Google Uses Google assistant and Amazon uses Alexa for their smart speakers. Smart speakers become very popular and there is a variety of smart speakers on the market from many different manufacturers with various technology. To know more about speakers click the links below Party Speaker, Bluetooth speaker, Home theater and Soundbars.