Gulu la ofufuza ochokera ku mayunivesite asanu aku America apanga njira yowukira mbali ya EarSpy, yomwe imatheketsa kumvetsera zokambirana za foni posanthula zambiri kuchokera ku masensa oyenda. Njirayi imachokera pa mfundo yakuti mafoni amakono ali ndi accelerometer ndi gyroscope, yomwe imayankhanso kugwedezeka komwe kumabwera chifukwa cha chowuzira chochepa mphamvu cha chipangizocho, chomwe chimagwiritsidwa ntchito poyankhulana popanda choyankhulira. Pogwiritsa ntchito njira zophunzirira zamakina, wofufuzayo adatha kubwezeretsa pang'ono mawu omwe amamveka pa chipangizocho potengera zomwe adalandira kuchokera ku masensa oyenda ndikuzindikira kuti wolankhulayo ndi ndani.
M'mbuyomu, tinkakhulupirira kuti kuwukira kwam'mbali komwe kumakhudza masensa oyenda kumatha kuchitika pogwiritsa ntchito masipika amphamvu omwe amagwiritsidwa ntchito poyimba m'manja, ndipo zokamba zomwe zimamveka foni ikayikidwa m'khutu sizimayambitsa kutulutsa. Komabe, kuwonjezereka kwa sensor sensitivity komanso kugwiritsa ntchito olankhula makutu amphamvu apawiri m'mafoni amakono asintha zinthu. Kuwukiraku kumatha kuchitika pamapulogalamu aliwonse amtundu wa Android, popeza mwayi wopeza zoyenda umaperekedwa ku mapulogalamu popanda zilolezo zapadera (kupatula Android 13).
Kugwiritsa ntchito neural network ya convolutional neural network ndi ma aligorivimu akale a makina ophunzirira makina kunapangitsa kuti, posanthula ma spectrogram opangidwa potengera data kuchokera ku accelerometer pa foni yam'manja ya OnePlus 7T, kuti akwaniritse kutsimikiza kwa jenda kwa 98.66%, kutsimikiza kwa okamba 92.6%, ndi kutsimikiza kwa manambala olankhulidwa kwa 56.42%. Pa foni yam'manja ya OnePlus 9, ziwerengerozi zinali 88.7%, 73.6% ndi 41.6%, motsatana. Pamene foni yam'manja idatsegulidwa, kulondola kwa kuzindikira kwamawu kudakwera mpaka 80%. Kuti mujambule deta kuchokera pa accelerometer, pulogalamu yam'manja ya Physics Toolbox Sensor Suite idagwiritsidwa ntchito.
Kuti muteteze ku kuwukira kwamtunduwu, zosintha zachitika kale pa nsanja ya Android 13 zomwe zimachepetsa kulondola kwa data kuchokera ku masensa omwe amaperekedwa popanda mphamvu zapadera mpaka 200 Hz. Mukayesa pa 200 Hz, kulondola kwachiwopsezo kumachepetsedwa mpaka 10%. Zimazindikiridwanso kuti kuwonjezera pa mphamvu ndi chiwerengero cha okamba, kulondola kumakhudzidwanso kwambiri ndi kuyandikira kwa oyankhula ku masensa oyenda, kulimba kwa nyumba komanso kukhalapo kwa kusokoneza kwakunja kuchokera ku chilengedwe.
Source: opennet.ru