{"id":36133,"date":"2019-10-31T22:09:48","date_gmt":"2019-10-31T19:09:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/chitat-mezhdu-not-sistema-peredachi-dannyh-vnutri-muzyki\/"},"modified":"2019-10-31T22:09:48","modified_gmt":"2019-10-31T19:09:48","slug":"chitat-mezhdu-not-sistema-peredachi-dannyh-vnutri-muzyki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/chitat-mezhdu-not-sistema-peredachi-dannyh-vnutri-muzyki","title":{"rendered":"Lexoni mes notave: sistemi i transferimit t\u00eb t\u00eb dh\u00ebnave brenda muzik\u00ebs","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Lexoni
\n
\nT\u00eb shpreh\u00ebsh at\u00eb q\u00eb fjal\u00ebt nuk mund t\u00eb p\u00ebr\u00e7ojn\u00eb; t\u00eb ndjesh emocione t\u00eb ndryshme q\u00eb p\u00ebrplasen n\u00eb nj\u00eb uragan ndijesh; t\u00eb shk\u00ebputesh nga toka, qielli dhe madje edhe nga Universi vet\u00eb, duke u embarkuar n\u00eb nj\u00eb udh\u00ebtim ku nuk ka harta, nuk ka rrug\u00eb, nuk ka shenja; t\u00eb imagjinosh, tregosh dhe p\u00ebrjetosh nj\u00eb histori t\u00eb t\u00ebr\u00eb q\u00eb gjithmon\u00eb do t\u00eb mbetet unike dhe e pa p\u00ebrs\u00ebritshme. E gjith\u00eb kjo b\u00ebhet e mundur nga muzika \u2014 nj\u00eb art q\u00eb ekziston p\u00ebr shum\u00eb mij\u00ebra vjet dhe q\u00eb k\u00ebnaq d\u00ebgjimin dhe zemrat tona. <\/p>\n

Megjithat\u00eb, muzika, m\u00eb sakt\u00ebsisht veprat muzikore, mund t\u00eb sh\u00ebrbejn\u00eb jo vet\u00ebm p\u00ebr k\u00ebnaq\u00ebsin\u00eb estetike, por edhe p\u00ebr t\u00eb transmetuar informacionin e koduar n\u00eb to, i destinuar p\u00ebr ndonj\u00eb pajisje dhe i paduksh\u00ebm p\u00ebr d\u00ebgjuesin. Sot do t\u00eb njihemi me nj\u00eb hulumtim mjaft t\u00eb pazakont\u00eb, n\u00eb t\u00eb cilin nj\u00eb grup student\u00ebsh t\u00eb doktoratur\u00ebs nga shkolla e lart\u00eb teknike e Cyrihut n\u00eb Zvic\u00ebr kan\u00eb arritur t\u00eb inkorporojn\u00eb t\u00eb dh\u00ebna t\u00eb caktuara n\u00eb veprat muzikore, duke e b\u00ebr\u00eb muzik\u00ebn nj\u00eb kanal p\u00ebr transmetimin e t\u00eb dh\u00ebnave. Si e realizuan ata teknologjin\u00eb e tyre, sa shum\u00eb ndryshojn\u00eb melodit\u00eb me dhe pa t\u00eb dh\u00ebna t\u00eb inkorporuara, dhe \u00e7far\u00eb treguan testet praktike? P\u00ebr k\u00ebto do t\u00eb m\u00ebsojm\u00eb nga raporti i k\u00ebrkuesve. Le t\u00eb nisim.<\/a><\/noindex><\/p>\n

Baza e studimit<\/h3>\n

\nK\u00ebrkuesit e quajn\u00eb teknologjin\u00eb e tyre teknik\u00eb akustike t\u00eb transferimit t\u00eb t\u00eb dh\u00ebnave. Kur nj\u00eb altoparlant luan nj\u00eb melodi t\u00eb ndryshuar, njeriu e percepton at\u00eb si nj\u00eb t\u00eb zakonshme, nd\u00ebrsa nj\u00eb smartphone mund t\u00eb lexoj\u00eb informacionin e koduar midis rreshtave, m\u00eb sakt\u00eb midis notave, n\u00ebse mund ta shprehim ashtu. Aspekti m\u00eb i r\u00ebnd\u00ebsish\u00ebm n\u00eb zbatimin e k\u00ebsaj metode t\u00eb transferimit t\u00eb t\u00eb dh\u00ebnave, sipas shkenc\u00ebtar\u00ebve (fakti q\u00eb k\u00ebta djem jan\u00eb ende n\u00eb studime nuk i pengon ata t\u00eb jen\u00eb shkenc\u00ebtar\u00eb), \u00ebsht\u00eb shpejt\u00ebsia dhe besueshm\u00ebria e transferimit, duke ruajtur nivelet e ketyre parametrave pa marr\u00eb parasysh skedarin audio t\u00eb zgjedhur. P\u00ebrshtatja p\u00ebr k\u00ebt\u00eb detyr\u00eb ndihmohet nga psikoakustika, e cila studion aspektet psikologjike dhe fiziologjike t\u00eb perceptimit t\u00eb tingujve nga njeri. <\/p>\n

Nj\u00eb nga q\u00ebndrat e transmetimit akustik t\u00eb t\u00eb dh\u00ebnave mund t\u00eb quhet OFDM (multipleximi me ndarje ortogonale t\u00eb frekuencave), i cili, s\u00eb bashku me adaptimin e n\u00ebnfrekuencave ndaj muzik\u00ebs origjinale me kalimin e koh\u00ebs, lejon maksimalizimin e p\u00ebrdorimit t\u00eb spektromit t\u00eb frekuenc\u00ebs s\u00eb transmetuar p\u00ebr shp\u00ebrndarjen e informacionit. Fal\u00eb k\u00ebsaj u arrit nj\u00eb shpejt\u00ebsi transmetimi prej 412 bit\/s n\u00eb nj\u00eb distanc\u00eb deri n\u00eb 24 metra (koeficienti i gabimeve < 10%). Eksperimentet praktike me pjes\u00ebmarrjen e 40 vullnetar\u00ebve konfirmuan se ishte praktikisht e pamundur t\u00eb d\u00ebgjohej ndryshimi mes melodia origjinale dhe asaj n\u00eb t\u00eb cil\u00ebn ishte inkorporuar informacioni.<\/p>\n

Ku mund t\u00eb aplikohet nj\u00eb teknologji e till\u00eb n\u00eb praktik\u00eb? Sipas hulumtuesve, ka nj\u00eb p\u00ebrgjigje: pothuajse t\u00eb gjith\u00eb smartphone-t modern\u00eb, laptop\u00ebt dhe pajisjet e tjera t\u00eb dor\u00ebs jan\u00eb t\u00eb pajisura me mikrofon\u00eb, dhe n\u00eb shum\u00eb vende publike (kafe, restorante, qendra tregtare etj.) ka altoparlant\u00eb me muzik\u00eb ambientale. N\u00eb k\u00ebt\u00eb melodi ambientale mund t\u00eb inkorporohen, p\u00ebr shembull, t\u00eb dh\u00ebna p\u00ebr lidhjen me rrjetin Wi-Fi pa pasur nevoj\u00eb p\u00ebr veprime t\u00eb tjera.<\/p>\n

Karakteristikat e p\u00ebrgjithshme t\u00eb transmetimit akustik t\u00eb t\u00eb dh\u00ebnave jan\u00eb b\u00ebr\u00eb t\u00eb qarta p\u00ebr ne, tani le t\u00eb kalojm\u00eb n\u00eb nj\u00eb studim m\u00eb t\u00eb detajuar t\u00eb struktur\u00ebs s\u00eb k\u00ebtij sistemi.<\/p>\n

P\u00ebrshkrimi i sistemit<\/h3>\n

\nInkorporimi i t\u00eb dh\u00ebnave n\u00eb melodi ndodh p\u00ebrmes maskimit t\u00eb frekuenc\u00ebs. N\u00eb intervalet e koh\u00ebs, frekuencat maskuese identifikohen, dhe n\u00ebnfrekuencat OFDM, t\u00eb af\u00ebrta me k\u00ebto elemente maskuese, mbushen me t\u00eb dh\u00ebna.<\/p>\n

\"Lexoni
\nImazhi \u21161: konvertimi i skedarit origjinal n\u00eb nj\u00eb sinjal kompozit (melodi + t\u00eb dh\u00ebna), i transmetuar p\u00ebrmes altoparlant\u00ebve.<\/i><\/p>\n

P\u00ebr t\u00eb filluar, sinjali audio origjinal ndahet n\u00eb segmente t\u00eb nj\u00ebpasnj\u00ebshm\u00ebris\u00eb p\u00ebr analiz\u00eb. Secili segment i till\u00eb (Hi) me L = 8820 mostrash, q\u00eb \u00ebsht\u00eb i barabart\u00eb me 200 ms, shum\u00ebzohet me dritare*<\/i> p\u00ebr t\u00eb minimizuar efektet e skajeve.<\/p>\n

Dritare*<\/b> \u2014 nj\u00eb funksion peshe q\u00eb p\u00ebrdoret p\u00ebr t\u00eb kontrolluar efektet e shkaktuara nga pranin\u00eb e petaleve an\u00ebsore n\u00eb vler\u00ebsimet spektrale.<\/p><\/blockquote>\n

M\u00eb pas, u zbuluan frekuencat dominuese t\u00eb sinjalit origjinal n\u00eb nj\u00eb gam\u00eb nga 500 Hz deri n\u00eb 9.8 kHz, gj\u00eb q\u00eb lejoj\u00eb marrjen e frekuencave maskuese fM,l p\u00ebr k\u00ebt\u00eb segment. P\u00ebrve\u00e7 k\u00ebsaj, ishte e nevojshme transferimi i t\u00eb dh\u00ebnave n\u00eb nj\u00eb gam\u00eb t\u00eb vog\u00ebl nga 9.8 deri n\u00eb 10 kHz p\u00ebr t\u00eb p\u00ebrcaktuar vendndodhjen e n\u00ebnshkallave n\u00eb marr\u00ebs. Kufiri i sip\u00ebrm t\u00eb fush\u00ebs s\u00eb frekuencave t\u00eb p\u00ebrdorur u vendos n\u00eb 10 kHz p\u00ebr shkak t\u00eb ndjeshm\u00ebris\u00eb s\u00eb ul\u00ebt t\u00eb mikrofon\u00ebve t\u00eb smartphone-ve n\u00eb frekuenca t\u00eb larta.<\/p>\n

Frekuencat maskuese u p\u00ebrcaktuan p\u00ebr secilin segment t\u00eb analizuar individualisht. P\u00ebrmes metod\u00ebs HPS (spektri harmonik i produkteve) u p\u00ebrcaktuan tri frekuenca dominuese, pas s\u00eb cilave ato u afruan deri n\u00eb notat m\u00eb t\u00eb af\u00ebrta t\u00eb shkall\u00ebs harmonike kromatike. K\u00ebshtu u mor\u00ebn notat kryesore fF,i = 1\u20263, q\u00eb ndodhen midis \u00e7el\u00ebsave C0 (16.35 Hz) dhe B0 (30.87 Hz). Duke marr\u00eb parasysh se notat kryesore jan\u00eb shum\u00eb t\u00eb ul\u00ebta p\u00ebr t'u p\u00ebrdorur n\u00eb transferimin e t\u00eb dh\u00ebnave, u llogarit\u00ebn oktavat e tyre m\u00eb t\u00eb larta 2kfF,i n\u00eb gam\u00ebn 500 Hz \u2026 9.8 kHz. Shumica e k\u00ebtyre frekuencave (fO,l1) ishin m\u00eb t\u00eb shprehura p\u00ebr shkak t\u00eb natyr\u00ebs s\u00eb HPS.<\/p>\n

\"Lexoni
\nImazhi nr. 2: oktavat e llogaritura fO,l1 p\u00ebr notat kryesore dhe harmonik\u00ebt fH,l2 t\u00eb tones m\u00eb t\u00eb fort\u00eb.<\/i><\/p>\n

Kombinimi i oktavave dhe harmonik\u00ebve u p\u00ebrdor si frekuenca maskuese, mbi baz\u00ebn e t\u00eb cilave u mor\u00ebn frekuencat OFDM t\u00eb n\u00ebnvepruesve fSC,k. Dy n\u00ebnveprues ishin vendosur p\u00ebrpara dhe pas \u00e7do frekuence maskuese. <\/p>\n

M\u00eb pas ndodhi filtrimi i spektrit t\u00eb segmentit audio Hi n\u00eb frekuencat e n\u00ebnvepruesve fSC,k. Pas k\u00ebsaj, mbi baz\u00ebn e bit\u00ebve informues n\u00eb Bi, krijohej simboli OFDM, duke b\u00ebr\u00eb q\u00eb segmenti kompozit Ci t\u00eb mund t\u00eb transmetohej p\u00ebrmes z\u00ebdh\u00ebn\u00ebsit. Vlerat dhe fazat e n\u00ebnvepruesve duhet t\u00eb zgjidhen n\u00eb m\u00ebnyr\u00eb q\u00eb marr\u00ebsi t\u00eb mund t\u00eb nxjerr\u00eb t\u00eb dh\u00ebnat e transmetuara, nd\u00ebrkoh\u00eb q\u00eb d\u00ebgjuesi nuk e v\u00ebren ndryshimin n\u00eb melodi.<\/p>\n

\"Lexoni
\nImazhi nr. 3: pjesa e spektrit dhe frekuencat e n\u00ebnvepruesve t\u00eb segmentit Hi t\u00eb melodis s\u00eb origjin\u00ebs.<\/i><\/p>\n

Kur sinjali audio me informacion t\u00eb koduar n\u00eb t\u00eb reprodukohet p\u00ebrmes altoparlant\u00ebve, mikrofoni i pajisjes marr\u00ebse e regjistron at\u00eb. P\u00ebr t\u00eb gjetur pozitat fillestare t\u00eb simboleve t\u00eb integruar OFDM, regjistrimet fillimisht duhet t\u00eb kalojn\u00eb p\u00ebrmes filtrimit t\u00eb bandes. K\u00ebshtu, nxirret diapazoni i lart\u00eb t\u00eb frekuenc\u00ebs, ku nuk ka sinjale muzikore q\u00eb interferojn\u00eb midis n\u00ebnbandeve. Fillimi i simboleve OFDM mund t\u00eb gjendet p\u00ebrmes prefiksit ciklik.<\/p>\n

Pas zbulimit t\u00eb fillimit t\u00eb simboleve OFDM, marr\u00ebsi merr informacion mbi notat m\u00eb dominuese duke dekoduar zon\u00ebn e frekuenc\u00ebs s\u00eb lart\u00eb. Gjithashtu, OFDM \u00ebsht\u00eb mjaft i q\u00ebndruesh\u00ebm ndaj ndikimeve t\u00eb burimeve t\u00eb nd\u00ebrhyrjeve t\u00eb ngushta, pasi ato ndikon vet\u00ebm n\u00eb disa nga n\u00ebnbande.<\/p>\n

Testet praktike<\/h3>\n

\nSi burim i melodive t\u00eb ndryshuara ishte altoparlanti KRK Rokit 8, nd\u00ebrsa roli i p\u00ebrgjegj\u00ebsit t\u00eb marrjes u luajt nga smartphone Nexus 5X.<\/p>\n

\"Lexoni
\nImazhi \u21164: ndryshimi midis manifestimeve reale t\u00eb OFDM dhe majave t\u00eb korrelacionit, t\u00eb matur n\u00eb nj\u00eb dhom\u00eb n\u00eb distanc\u00ebn 5 m midis altoparlantit dhe mikrofonit.<\/i><\/p>\n

Shumica e pikave OFDM \u00ebsht\u00eb n\u00eb gam\u00ebn nga 0 deri n\u00eb 25 ms, prandaj \u00ebsht\u00eb e mundur t\u00eb gjendet nj\u00eb fillim i pranuesh\u00ebm brenda prefiksit ciklik prej 66.6 ms. K\u00ebrkuesit v\u00ebrejn\u00eb se marr\u00ebsi (n\u00eb k\u00ebt\u00eb eksperiment, nj\u00eb smartphone) merr parasysh se simbolet OFDM reprodukohen periodicisht, gj\u00eb q\u00eb p\u00ebrmir\u00ebson zbulimin e tyre.<\/p>\n

E para q\u00eb duhet verifikuar ishte ndikimi i distanc\u00ebs n\u00eb koeficientin e gabimeve p\u00ebr bit (BER). P\u00ebr k\u00ebt\u00eb u kryen tri teste n\u00eb lloje t\u00eb ndryshme hap\u00ebsirash: nj\u00eb korridor me qilim, nj\u00eb zyr\u00eb me linoleum n\u00eb dysheme dhe nj\u00eb auditore me dysheme druri.<\/p>\n

\r\n \"Luaj\r\n
<\/div>\r\n <\/div><\/center>
\nSi \"testues\" u zgjodh k\u00ebnga \"And The Cradle Will Rock\" nga grupi Van Halen. <\/i><\/p>\n

Volumet e tingullit u rregulluan n\u00eb nj\u00eb m\u00ebnyr\u00eb q\u00eb niveli i z\u00ebrit i matur nga smartphone-i n\u00eb nj\u00eb distanc\u00eb prej 2 m nga altoparlanti t\u00eb ishte 63 dB.<\/p>\n

\"Lexoni
\nImazhi Nr. 5: treguesit BER n\u00eb var\u00ebsi t\u00eb distanc\u00ebs nd\u00ebrmjet altoparlantit dhe mikrofonit (linja blu \u2014 auditore, e gjelb\u00ebr \u2014 korridor, e portokallt\u00eb \u2014 zyr\u00eb).<\/i><\/p>\n

N\u00eb koridor, tingulli n\u00eb 40 dB u kap nga smartfoni deri n\u00eb 24 metra nga zhurma. N\u00eb auditore, n\u00eb distanc\u00ebn 15 m, tingulli ishte 55 dB, dhe n\u00eb zyr\u00eb, n\u00eb nj\u00eb distanc\u00eb prej 8 metrash, niveli i tingullit t\u00eb perceptuar nga smartfoni arriti 57 dB. <\/p>\n

Duke marr\u00eb parasysh se auditoret dhe zyra jan\u00eb m\u00eb reverberante, sinjalet e vonuara t\u00eb eko-sigmaleve OFDM tejkalojn\u00eb gjat\u00ebsin\u00eb e prefiksit ciklik dhe rrisin BER.<\/p>\n

Reverberimi*<\/b> \u2014 reduktimi gradual i intensitetit t\u00eb tingullit p\u00ebr shkak t\u00eb reflektimit t\u00eb tij t\u00eb shumt\u00eb. <\/p><\/blockquote>\n

M\u00eb pas, studiuesit demonstruan universalisht t\u00eb sistemit t\u00eb tyre, duke e aplikuar at\u00eb n\u00eb 6 k\u00ebng\u00eb t\u00eb ndryshme n\u00eb tri zhanre (tabela m\u00eb posht\u00eb).<\/p>\n

\"Lexoni
\nTabela nr. 1: k\u00ebng\u00ebt e p\u00ebrdorura n\u00eb test.<\/i><\/p>\n

Gjithashtu, p\u00ebrmes t\u00eb dh\u00ebnave t\u00eb tabel\u00ebs mund t\u00eb shohim shpejt\u00ebsin\u00eb e transmetimit dhe koeficient\u00ebt e gabimeve p\u00ebr \u00e7do k\u00ebng\u00eb. Shpejt\u00ebsia e transmetimit ndryshon sepse BPSK diferencial (manipulimi i faz\u00ebs) funksionon m\u00eb mir\u00eb kur p\u00ebrdoren t\u00eb nj\u00ebjtat n\u00ebn-oshtja. Kjo \u00ebsht\u00eb e mundur kur segmentet fqinje p\u00ebrmbajn\u00eb elemente maskuese t\u00eb nj\u00ebjta. K\u00ebng\u00ebt q\u00eb jan\u00eb vazhdimisht t\u00eb forta ofrojn\u00eb nj\u00eb baz\u00eb optimale p\u00ebr fshehjen e t\u00eb dh\u00ebnave, pasi frekuencat maskuese jan\u00eb m\u00eb t\u00eb pranishme n\u00eb nj\u00eb gam\u00eb t\u00eb gjer\u00eb frekuencash. Muzika q\u00eb ndryshon shpejt mund t\u00eb mashtroj\u00eb simbolet OFDM vet\u00ebm pjes\u00ebrisht p\u00ebr shkak t\u00eb gjat\u00ebsi t\u00eb fiksuar t\u00eb dritares s\u00eb analiz\u00ebs.<\/p>\n

M\u00eb pas, testimi i sistemit u mor nga njer\u00ebzit q\u00eb duhej t\u00eb p\u00ebrcaktonin se cila melodit\u00eb ishte origjinale dhe cila ishte modifikuar me informacionin e integruar n\u00eb t\u00eb. P\u00ebr k\u00ebt\u00eb, fragmente 12-sekond\u00ebshe t\u00eb k\u00ebng\u00ebve nga tabela nr. 1 u vendos\u00ebn n\u00eb nj\u00eb sajt t\u00eb ve\u00e7ant\u00eb. <\/p>\n

N\u00eb eksperimentin e par\u00eb (E1), \u00e7do pjes\u00ebmarr\u00ebs kishte p\u00ebr t\u00eb d\u00ebgjuar ose nj\u00eb fragment t\u00eb modifikuar ose origjinal dhe duhet t\u00eb vendoste n\u00ebse ky fragment ishte origjinal apo i modifikuar. N\u00eb eksperimentin e dyt\u00eb (E2), pjes\u00ebmarr\u00ebsit kishin mund\u00ebsin\u00eb t\u00eb d\u00ebgjonin t\u00eb dy variantet sa her\u00eb q\u00eb d\u00ebshironin, e pastaj t\u00eb vendosnin se cili prej tyre ishte origjinali dhe cili ishte i ndryshuar.<\/p>\n

\"Lexoni
\nTabela Nr.2: rezultatet e eksperimentet E1 dhe E2.<\/i><\/p>\n

N\u00eb rezultatet e eksperimentit t\u00eb par\u00eb, ka dy tregues: p(O|O) \u2013 p\u00ebrqindja e pjes\u00ebmarr\u00ebsve q\u00eb identifikuan sakt\u00eb melodin\u00eb origjinale dhe p(O|M) \u2013 p\u00ebrqindja e pjes\u00ebmarr\u00ebsve q\u00eb identifikuan versionin e ndryshuar t\u00eb melodis\u00eb si origjinal.<\/p>\n

\u00cbsht\u00eb interesante q\u00eb disa pjes\u00ebmarr\u00ebs, sipas studiuesve, e konsideronin disa melodi t\u00eb modifikuara m\u00eb origjinale se vet\u00eb origjinali. Treguesi mesatar i t\u00eb dy eksperimentet sugjeron se d\u00ebgjuesi mesatar nuk do t\u00eb v\u00ebrej\u00eb ndryshimin mes melodis\u00eb normale dhe asaj n\u00eb t\u00eb cil\u00ebn jan\u00eb integruar t\u00eb dh\u00ebnat.<\/p>\n

Natyrisht, njoh\u00ebsit e muzik\u00ebs dhe muzikant\u00ebt do t\u00eb hetojn\u00eb disa sakt\u00ebsi dhe elemente t\u00eb dyshimta n\u00eb melodit\u00eb e modifikuara, por k\u00ebto elemente nuk jan\u00eb aq t\u00eb r\u00ebnd\u00ebsishme sa t\u00eb shkaktojn\u00eb shqet\u00ebsim.<\/p>\n

Tani ne mund t\u00eb marrim pjes\u00eb n\u00eb eksperimentin vet\u00eb. M\u00eb posht\u00eb jan\u00eb paraqitur dy versione t\u00eb s\u00eb nj\u00ebjt\u00ebs melodi \u2014 origjinali dhe i modifikuari. A e d\u00ebgjoni ndryshimin?<\/p>\n

Versioni origjinal i melodi<\/a><\/noindex>
\nndaj
\nVersioni i modifikuar i melodi<\/a><\/noindex><\/p>\n

P\u00ebr nj\u00eb njohje m\u00eb t\u00eb detajuar me nuancat e hulumtimit, rekomandoj t\u00eb shikoni n\u00eb raport<\/a><\/noindex> grupit k\u00ebrkimor.<\/p>\n

Gjithashtu, mund t\u00eb shkarkoni arkivin ZIP t\u00eb skedar\u00ebve audio t\u00eb melodive origjinale dhe t\u00eb modifikuara t\u00eb p\u00ebrdorura n\u00eb k\u00ebrkim nga kjo lidhje<\/a><\/noindex>.<\/p>\n

Epilogu<\/h3>\n

\nN\u00eb k\u00ebt\u00eb punim, doktorant\u00ebt e Shkoll\u00ebs s\u00eb Lart\u00eb Teknike t\u00eb Zvicr\u00ebs n\u00eb Cyrih p\u00ebrshkruan nj\u00eb sistem t\u00eb mrekulluesh\u00ebm t\u00eb transmetimit t\u00eb t\u00eb dh\u00ebnave brenda muzik\u00ebs. P\u00ebr k\u00ebt\u00eb ata p\u00ebrdor\u00ebn maskimin e frekuencave, q\u00eb mund\u00ebsoi integrimin e t\u00eb dh\u00ebnave n\u00eb melodi, q\u00eb luhet nga altoparlanti. Kjo melodi perceptohet nga mikrofonin e pajisjes, e cila njeh t\u00eb dh\u00ebnat e fshehura dhe i dekodon ato, nd\u00ebrsa d\u00ebgjuesi mesatar nuk do t\u00eb v\u00ebrej\u00eb asnj\u00eb ndryshim. N\u00eb t\u00eb ardhmen, grupi planifikon t\u00eb zhvilloj\u00eb sistemin e tyre duke p\u00ebrzgjedhur metoda m\u00eb t\u00eb avancuara p\u00ebr integrimin e t\u00eb dh\u00ebnave n\u00eb audio. <\/p>\n

Kur dikush shpik di\u00e7ka t\u00eb pazakont\u00eb, ve\u00e7an\u00ebrisht di\u00e7ka funksionale, ne gjithmon\u00eb jemi t\u00eb g\u00ebzuar. Por shum\u00eb m\u00eb tep\u00ebr g\u00ebzim sjell fakti se ky shpikim ishte krijuar nga t\u00eb rinjt\u00eb. Shkenca nuk ka kufij moshe. N\u00ebse t\u00eb rinjt\u00eb e konsiderojn\u00eb shkenc\u00ebn t\u00eb m\u00ebrzitshme, at\u00ebher\u00eb ajo paraqitet nga nj\u00eb k\u00ebndv\u00ebshtrim jo t\u00eb duhur, p\u00ebr ta th\u00ebn\u00eb k\u00ebshtu. Sepse, si\u00e7 e dim\u00eb, shkenca \u00ebsht\u00eb nj\u00eb bot\u00eb e mrekullueshme q\u00eb kurr\u00eb nuk ndalon s\u00eb befasuari. <\/p>\n

Of-topi i premtes:<\/b>

\r\n \"Luaj\r\n
<\/div>\r\n <\/div><\/center>
\nDhe tani q\u00eb fol\u00ebm p\u00ebr muzik\u00ebn, m\u00eb sakt\u00ebsisht p\u00ebr rock muzik\u00ebn, ja nj\u00eb udh\u00ebtim t\u00eb mrekulluesh\u00ebm p\u00ebrmes hap\u00ebsirave t\u00eb rockut.<\/i><\/p>\n

\r\n \"Luaj\r\n
<\/div>\r\n <\/div><\/center>
\nQueen, \u00abRadio Ga Ga\u00bb (1984).<\/i><\/p>\n

Faleminderit p\u00ebr v\u00ebmendjen, mbani kuriozitetin n\u00eb jet\u00eb dhe shijoni fundjav\u00ebn, shok\u00eb! \ud83d\ude42<\/p>\n

\nFaleminderit q\u00eb jeni me ne. Ju p\u00ebrqejn\u00eb artikujt tan\u00eb? Doni t\u00eb shihni m\u00eb shum\u00eb materiale interesante? Na mb\u00ebshtesni me nj\u00eb porosi ose duke na rekomanduar miqve tuaj, 30% zbritje p\u00ebr p\u00ebrdoruesit e Habra p\u00ebr nj\u00eb alternativ\u00eb unike t\u00eb server\u00ebve entry-level, e cila \u00ebsht\u00eb krijuar nga ne p\u00ebr ju:<\/b> E gjith\u00eb e v\u00ebrteta rreth VPS (KVM) E5-2650 v4 (6 Ndot\u00ebs) 10GB DDR4 240GB SSD 1Gbps nga $20, ose si ta ndash n\u00eb m\u00ebnyr\u00eb t\u00eb duhur serverin?<\/a><\/noindex> (disponohen variante me RAID1 dhe RAID10, deri n\u00eb 24 b\u00ebrthama dhe deri n\u00eb 40GB DDR4).<\/p>\n

Dell R730xd p\u00ebr dy her\u00eb m\u00eb lir\u00eb?<\/b> Vet\u00ebm k\u00ebtu 2 x Intel TetraDeca-Core Xeon 2x E5-2697v3 2.6GHz 14C 64GB DDR4 4x960GB SSD 1Gbps 100 TB nga $199<\/a><\/noindex> n\u00eb Holand\u00eb! Dell R420 \u2014 2x E5-2430 2.2Ghz 6C 128GB DDR3 2x960GB SSD 1Gbps 100TB \u2014 nga $99!<\/b><\/b> Lexoni rreth Si t\u00eb nd\u00ebrtosh nj\u00eb infrastruktur\u00eb t\u00eb klas\u00ebs korporative me p\u00ebrdorimin e server\u00ebve Dell R730xd E5-2650 v4 me \u00e7mim prej 9000 euro p\u00ebr pak para?<\/a><\/noindex>
\n
Burimi: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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