Computers, smart phones, and other machines are the perfect servants. They always do what they are "told". We usually "tell" them to do things by using a mouse or keyboard. But what if we could just talk to them normally and tell them what to do in our daily life?
This type of technology, known as voice control or voice recognition(声音识别), has been shown in films and TV shows since the 1960s.And real-world voice recognition is used for more everyday tasks. You might be familiar with Siri and Alexa, two examples of voice recognition software made by Apple and Amazon. They can be asked to do many things, from setting alarms and playing music to placing online shopping orders and controlling household appliances (家用电器)
One of the nice things about voice recognition is that it can be used when we're on the go. When you're driving a car or walking down the sidewalk, it can be inconvenient or even dangerous to pick up your smart phone and type away on the keyboard. Voice recognition allows you to focus on (专注于)whatever you're doing at the moment while still doing other tasks. What's more, people with hearing disabilities can also benefit(获益), as speech recognition software can be used to "listen" to spoken words and turn them into text that deaf people can read.
