Iqela labaphandi abavela kwiYunivesithi yaseBen-Gurion yaseNegev kunye ne-Weizmann Institute of Science (uSirayeli) uye wavelisa ubuchule. () ukwakha ngokutsha incoko yangaphakathi kunye nomculo kusetyenziswa uhlalutyo lokungcangcazela kwebhalbhu yesibane kwisibane esilengayo. I-sensor ye-electro-optical sensor ebekwe kwisitrato yayisetyenziswe njenge-analyzer kwaye, usebenzisa i-telescope, yayijoliswe kwisibane esibonakalayo ngefestile. Uvavanyo lwenziwa ngezibane ze-LED ze-12-watt kwaye zenza ukuba kube lula ukucwangcisa i-eavesdropping kumgama weemitha ezingama-25.
Indlela isebenza kwisibane esimisiweyo. Ukungcangcazela kwesandi kudala ukungafani koxinzelelo lomoya, okubangela i-microvibrations yento enqunyanyisiweyo. I-microvibrations enjalo ikhokelela ekugqwetheni kokukhanya kwii-engile ezahlukeneyo ngenxa yokufuduka kwendiza yokukhanya, enokuthi ibonwe ngokusebenzisa i-sensor ye-electro-optical sensor kwaye ithotywe kwisandi. Kwasetyenziswa iteleskopu ukubamba ukuhamba kokukhanya kwaye iqondise kwinzwa. Umqondiso ofunyenwe kwi-sensor (i-Thorlabs PDA100A2 esekelwe kwi-photodiode) yaguqulelwa kwifom yedijithali usebenzisa i-16-bit analog-to-digital converter ADC NI-9223.
Ukwahlulwa kolwazi olunxulumene nesandi ukusuka kwisiginali ye-optical jikelele lwenziwa kwizigaba ezininzi, kubandakanywa , ukuqheleka, ukunciphisa ingxolo kunye nokulungiswa kwe-amplitude ngokuphindaphindiweyo. Isikripthi se-MATLAB salungiswa ukuze kuqhutywe umqondiso. Umgangatho wokubuyiselwa kwesandi xa uthatha iiparameters ukusuka kumgama weemitha ezingama-25 ujike wanele ukuqatshelwa kwentetho ngeGoogle Cloud Speech API kunye nokumisela ukubunjwa komculo ngeenkonzo zeShazam kunye neSoundHound.
Kuvavanyo, isandi senziwa kwakhona kwigumbi kwivolumu ephezulu kwizithethi ezikhoyo, oko kukuthi. isandi sasiphezulu kakhulu kunentetho eqhelekileyo. Isibane se-LED asizange sikhethwe ngethuba, kodwa njengokubonelela ngomlinganiselo ophezulu we-signal-to-noise (i-6.3 amaxesha aphezulu kunesibane se-incandescent kunye namaxesha angama-70 aphezulu kunesibane se-fluorescent). Abaphandi bachaza ukuba uluhlu lohlaselo kunye nobuntununtunu bunokwandiswa ngokusebenzisa iteleskopu enkulu, inzwa yomgangatho ophezulu, kunye ne-24- okanye 32-bit analog-to-digital converter (ADC); uvavanyo lwenziwe kusetyenziswa iteleskopu eluncedo. isivamvo esitshiphu, kunye ne-16-bit ADC.
Ngokungafaniyo nendlela ecetywayo ngaphambili "", ethi ibambe kwaye ihlalutye izinto ezingcangcazelayo kwigumbi, njengeglasi yamanzi okanye ipakethe ye-chip, iLamphone yenza kube lula ukulungelelanisa ukumamela ngexesha lokwenyani, ngelixa imakrofoni ebonwayo ukwakha kwakhona imizuzwana yentetho ifuna izibalo ezinzulu ezithathayo. iiyure . Ngokungafaniyo neendlela ezisekelwe ekusebenziseni okanye njengemakrofoni, iLamphone ivumela uhlaselo ukuba lwenziwe kude, ngaphandle kwesidingo sokusebenzisa i-malware kwizixhobo ezikwindawo. Ngokungafaniyo nokuhlaselwa usebenzisa , ILamphone ayifuni kukhanyiselwa into eshukumayo kwaye inokuveliswa ngendlela yokwenziwa.
umthombo: opennet.ru