Do you have a smart speaker to play your favorite song? Have you ever had a chat with Siri? I’m sure your answer must be yes. Voice assistants are programs on digital devices(数码设备).They listen and respond to verbal(口头的)orders.
Today's voice assistants can help you with many things. They can do almost anything you can think of. They can answer questions, make calls as well as provide weather, traffic, sports and other real-time (实时的)information. They can even control smart devices in your home, such as washing machine and air conditioner.
So how do they understand us?
It all starts with a signal word. Users say the names of their voice assistants to get their attention . For example, they might say, “Hey, Siri!” The signal word wakes up the device and tells it to begin paying attention,
After it hears the signal word, the voice assistant starts recording. The device waits for a while to know you’ve finished your request. It then sends your recorded request over the Internet to its database (数据库).
Once in the database, your request is compared to other requests It's divided into separate orders that your voice assistant can understand. The database then sends these separate orders back to the device. When it receives the orders, the voice assistant will carry out the task you asked for.
Voice assistants are improving all the time. If you say to a smart speaker, “Play rock music”, and it plays country music, you'll tell it to stop. This teaches the device that the orders it received from its database were wrong. It will tell the database about the mistake and try to do better next time. Sometimes a voice assistant might ask a question after it receives your request to make sure it understands what you want.
24. How do the voice assistants begin to work?
A.Users say their names. |
B.They hear the users' voices. |
C.Users have a chat with them. |
D.They answer the questions. |
25. Which of the following is TRUE according to the passage?
A.The smart speaker can receive written words. |
B.Any orders can be understood by the voice assistants. |
C.We can use voice assistants to control the smart fridge. |
D.As soon as the voice assistant hears the signal word, it sends requests |
26. What’s the best title of the passage?
A.What Are Voice Assistants? |
B.How Do Voice Assistants Work? |
C.What Can Voice Assistants Do? |
D.How Do Voice Assistants Understand? |