With the rapid development of 5g mobile communication, artificial intelligence, Internet of things and Internet of vehicles, voice interaction is becoming a common scene for ordinary people to use these high technologies: intelligent speaker that can control household intelligent appliances, a voice that can set navigation software... On October 24, the second world voice Expo and iFLYTEK global 1024 developers' Festival 2019 opened in Hefei. Reporters from the global times felt a series of shocking black technologies at the conference, which have developed from cool applications to meet people's rigid needs.
Many people worry that there have been cases of swindling by using face changing and voice changing software. How to prevent the illegal use of iFLYTEK's black technology? According to the staff, at present, highly restored voice and virtual image services are only available to institutional users, such as CCTV virtual anchor "Ji Xiaomeng". Voice and images can only be generated with authorization. The speech similarity of personal user speech synthesis service is controlled at about 60%, "mainly from the perspective of security".
When it comes to speech recognition, the most typical application scenarios are at home and in the car. Reporters from global times saw in the exhibition hall that a product can be accurately identified in a long distance and noisy environment. According to the staff, this uses the sound source positioning technology, which can eliminate noise and accurately identify the position of the user who issued the command. In the process of on-site demonstration, although there is a lot of noise around the venue, it can accurately operate refrigerators, televisions, air conditioners and other electrical appliances a few meters away. According to the iFLYTEK experts attending the meeting, the ultra long distance recognition has reached 20-50m, with an accuracy rate of more than 90%.
In addition to speech recognition, brain computer interface technology is also an important direction in the field of artificial intelligence. Reporter saw a wheelchair controlled by brain on the booth of South China University of technology. Based on the hybrid brain computer interface, users can use their brain to control the wheelchair's forward and backward movement without using their limbs or sending voice commands. A researcher in a wheelchair demonstrated to the Global Times reporter (as shown in the figure) that he was wearing a device that could collect brain wave signals and operated the wheelchair skillfully without moving his hands and feet. According to him, the procedure requires a high degree of concentration. What's the difference between this technology and foreign related research? The biggest advantage of the technology, he said, is that it only needs a headdress device like a hat, rather than a device implanted in the brain.
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