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Стартап
DateDate: 30-06-2019, 06:40

New software, which was developed by American scientists at Washington University, will allow at home, using a smartphone, to determine whether a person has otitis. Failure to diagnose otitis media can lead to serious complications, including the complete loss of hearing.
The EarHealth app turns an iPhone, iPod touch or Android into an otoscope. The system uses a phone speaker and microphone to send and receive audio to the ear canal through a paper cone. The principle of operation of this invention, scientists have compared with the system of echolocation of a bat.
The device sends a series of soft audio signals with a frequency of 1 to 4 kHz in your ear. The sound resembles the chirping of birds and does not cause unpleasant sensations in humans.
The signal is reflected from the eardrum and is picked up by the microphone of the mobile device. If there is fluid in the middle ear, the frequency of the sound in the reflected wave changes.
The eardrum of a healthy person resonates well at several sound frequencies. The sound reflected from a healthy ear will create a soft echo that resembles an acoustic and wide dip.
The fluid in the ear limits the vibratory capacity of the eardrum, which in turn creates a narrower and deeper acoustic dip.
“It's like tapping on a glass of wine,” says study co-author, Dr. Justin Chen. “Depending on how much fluid is in it, you get different sounds.”
The method was tested on a group of children aged 1.5 years to 17 years at the Seattle Children's Hospital.
Dr. Randall Bligh claims that it will be easier and cheaper to monitor at home.
“Even in developing countries, smartphones are becoming commonplace. If an application can give doctors precision at the specialist level, this can really change the tactics of treating inflammatory diseases of the ear at the global level,” Dr. Chen said.






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