October 4 this year is the traditional Chinese festival of respecting the elderly, the Double Ninth Festival. The two festivals meet. In addition, many regions in China are carrying out silent management due to the epidemic. Therefore, it is a good time for young people to teach the elderly in their families some new technologies. For example, how to prevent fraud? For example, young people can help the elderly when their eyes are dazzled and it is inconvenient to cut their nails. For example, the number of depressed elderly people is also increasing. The company of young people is a kind of treatment in itself. At present, China's population over 60 years old has exceeded 267 million. While science and technology are increasingly developed, what can science and technology do for China's growing elderly? How can technology accompany the elderly to grow old slowly? Playing musical instruments was Tang Chen's companion in his later life. But many years ago, he found that his hearing gradually degenerated, and the sound of instruments began to blur. Tang Chen worked as a water pump worker all his life. The noisy environment made him unaware of the hearing loss, which was already a serious hearing impairment when he found it. In the town where he lives, there are many hearing impaired elderly people, but not many people wear hearing aids. They either think that it is only the "back of the ear" that does not need to be corrected, or they do not want to burden the children because they cannot hear or speak. Tang Chen was different. He not only said, but also played and sang, and sang loudly, as if the louder the voice, the more he could keep it. When Tang Chen was 70 years old, his son bought him a hearing aid worth one or two hundred yuan. He could hear it, but there was always a rustling sound in the hearing aid, but he got used to it later. Even if it was noisy, it was better than what he could not hear. Until recently, social workers and volunteers told him that his hearing aid could not distinguish speech, but actually it was just like a loudspeaker. Shang Shidong, director of Tencent Sound Laboratory, member of the audio engineering committee of the Chinese Acoustics Society: In many cases, when domestic hearing aids are amplified, they are often amplified together with voice and noise. When no one speaks, they amplify the noise of the whole room, the noise of the fan, or the sound of traffic cars driving outside the window. After wearing them for a long time, they are uncomfortable when wearing them for the first time, The second one will damage the auditory nerve after wearing it for a long time. In China, about 1/3 of the elderly over 65 have moderate hearing loss, but the use rate of hearing aids is less than 10%. Although the hearing aid is small, it is a miniature electronic product with all the internal organs. The price of imported hearing aids is often tens of thousands. The domestic hearing aids are still lacking in technology and experience, which makes hearing aids far less popular than presbyopic glasses. Help domestic hearing aids overcome technical difficulties such as noise reduction, and become the focus of audio engineer Shang Shidong in recent two years. Shang Shidong, director of Tencent Conference Tianlai Laboratory, member of the Audio Engineering Committee of the Chinese Acoustics Society: Our engineers collect all the typical environmental background noise in the eight scenes, and then combine the signal characteristics collected by the microphone array of the hearing aid itself to specially train our machine learning model. For example, howling suppression and noise reduction use AI models to significantly improve its experience. 80% of our test data
Edit：Li Jialang Responsible editor：Mu Mu
Source：huanqiu.com
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