01 ngo-07
I-Oppo Digital PM-1 Izimpendulo Zemivamisa
Ngilinganise ukusebenza kwe-Oppo Digital PM-1 ngendlela engilinganisela ngayo ama-headphones angaphezu kwezindlebe, ngisebenzisa i-GRAS 43AG indlebe / isifuba simulator, isicwaningi somsindo se-Clio FW, isofthiwe yekhompyutha ye-TrueRTA ekhompyutheni ephathekayo ne-audio M-Audio MobilePre USB isikhombikubona, kanye ne-Musical Fidelity V-Can isikhulumi sekhanda le-headphone. Ngalinganisa izilinganiso ze-point reference reference (ERP), cishe iphuzu esikhaleni lapho intendeni yesandla yakho ihamba khona nge-axal ye-earal canal uma ucindezela isandla sakho ngokumelene nendlebe yakho. Ayikho isinxephezelo se-EQ - okungukuthi, i-diffuse-field EQ - yaqashwa. Zonke izilinganiso zenziwa nge-earpads ezenziwe ngezikhwama ezenziwe.
Ishadi elingenhla libonisa impendulo yemvamisa ye-PM-1 ngakwesokunxele (okwesibhakabhaka) nakwesokudla (iziteshi ezibomvu), nezinga lokuhlola elibhekiswe kuma-94 dB @ 500 Hz. Ayikho indinganiso yalokho okushiwo "impendulo" yezimvamisa ezinhlokweni zekhanda, kepha lesi silinganiso sikhombisa umsindo ongathathi hlangothi. Ama-headphones amaningi anephutha lokuphendula nge-3 kHz noma ngaphezulu (okucatshangelwa ukuthi wenze umsindo wekhandaphone kufane neyezikhulumi ekamelweni langempela), futhi lo uwenza, kodwa ukuphakama kwawo okungu-3 kHz kunomusa cishe ku-+6 dB (a eziningi zazo zifana no -12 dB). Kunomunye umnene, futhi uphansi kakhulu, uphezulu ku-8.8 kHz.
Ukuzwela kwe-PM-1, kulinganiswa phakathi kuka-300 Hz no-3 kHz ngesignali esingu-1 mW ebalwe i-32 ohms impedance elinganiselwa ku-101.6 dB, ephezulu kakhulu kumakhono wekhanda lomhlaba.
Uma unayo imibono noma imibuzo ephathelene nalezi zilinganiso, sicela uzithumele kubhulogi lokuqala elibhekisela kulesi sihloko.
02 ngo-07
I-Oppo Digital PM-1 vs. Audeze I-LCD-X vs. HiFiMan HE-6
Leli shidi libonisa impendulo yesilinganiso esinesidingo sezintambo ezintathu eziphezulu eziphezulu ze-headset magnetic headphones: i-Oppo Digital PM-1 (i-trace blue), i-Audeze LCD-X (i-red trace) ne-HiFiMan HE-6 (i-trace eluhlaza). Zonke izilinganiso ezintathu cishe zifile flat phakathi 50 Hz no 1.5 kHz. Ngaphezulu kwalokho, i-PM-1 ihlukanisa ngokuphambene umehluko phakathi kwe-LCD-X ne-HE-6, ebonisa ukuthi kungenzeka ukuthi iphonephone yekhanda elingenayo i-neutral kakhulu kuleli qembu.
03 ka-07
I-Oppo Digital PM-1 Ukuphindaphinda Ukuvama, 5 vs. 75 Imithombo Ye-Ohms
Lokhu kubonisa impendulo yemvamisa ye-PM-1 esiteshini esifanele lapho idliwe ngqo yi-Musical Fidelity V-Can amp 5-ohm impedance yokukhipha (ukulandelela obomvu), futhi nokuxhaswa okungu-70 ohms okungeziwe ukwakha imiphetho engu-75 ohms yokuphuma kwemifino (eluhlaza ukulandelela). Umphumela ophelele lapha uzoba imigqa emibili ehamba ngokugcwele, okuzobonisa ukuthi ibhalansi ye-tonal ye-PM-1 ayishintshi uma ushintsha amadivayisi omthombo. Futhi njengoba ubona lapha, umphumela we-PM-1 kulesi sivivinyo ususondele kakhulu.
04 ka 07
I-Oppo Digital PM-1 I-Decay Decayral
Isakhiwo se-spectral (waterfall) se-PM-1, isiteshi esifanele. Izindebe ezindala eziluhlaza okwesibhakabhaka / aluhlaza zikhombisa ukuhlaselwa, okuvamile okungathandeki. Le sephone ingabonisi ama-resonances aphawulekayo. (Yebo, ubona ukubola okude emasimini, kodwa lokho kuyinto evamile.) Qaphela ukuthi ishadi langempela engilithumele libonise ukubola okude kuwo wonke amabhande alalelwayo; esilinganisweni sokuqala ngicabanga ukuthi ngikhohliwe ukubeka izinto zokugcoba phezu kwe-PM-1 evulekile emuva, engivame ukwenza ngama-headphone evulekile ukuze umsindo wabo ungabuyiselwa emuva ebhodini lami.
05 ka-07
I-Oppo Digital PM-1 Ukuphambana nomfutho ku-100 dBA
Ukuphazamiseka okuphelele kwe-harmonic (THD) kwe-PM-1, isiteshi sesokunxele, kulinganiswa ezingeni lokuhlola lika-100 dBA (i-trace orange) kanye ne-90 dBA (i-trace green). Yini ofuna ukubona lapha yimizila egijima phansi kakhulu eshadini. I-PM-1 ayinayo ukuphazamiseka okukude okubonakale kuma-headphone Audeze, kodwa i-PM-1 yembula ukuphazamiseka kuphela kwibhande elilinganiselwe phakathi kuka-220 no-300 Hz, okwenyuka kumaphesenti angu-6 ku-100 dBA no-2 amaphesenti at 90 dBA.
Ngiye ngabona ukuphawula nokucabangela mayelana nalesi silinganiso kumaforamu e-inthanethi, futhi ngifuna ukucindezela izinto ezimbalwa ezidingekayo ukuze ngiqonde lokhu kulinganiswa - okufana nokulinganisa okuningi kwe-acoustical, kulula ukungaqondakali kahle.
Okokuqala, i-100 dBA yizinga elilalele kakhulu lokulalela. Ngikhetha lokho njengezinga lami lokuhlola hhayi ngoba liyizinga elilalelayo lokulalela, kodwa ngoba lizinga ukuthi ezinye i-headphones zingakwazi ukukhiqiza ngaphandle kokuphazamiseka kanti ezinye azikwazi. Ngangivame ukulinganisa wonke ama-headphones emazingeni aphansi kodwa ngathola ukuthi kumazinga ajwayelekile okulalela, ukuphazamiseka cishe akukaze kube khona kunoma yikuphi izinga elibalulekile.
Okwesibili, lapho ngikwazi ukukala ama-headphone amaningi futhi ngiqhathanise imiphumela yokulinganisa ekubonweni okubonakalayo kwamaphothilili okulalela engangiwasebenzisa, ngafunda ukuthi yikuphi okuningi nokuthi yiziphi izinhlobo zokuphazamiseka ezazizwakala kalula. Ngokwezilinganiso zami (ama-headphones angu-174 kuze kube yimanje), ngithole ukuthi abalaleli babika ukuphazamiseka kokuzwa kuphela ezimweni ezimbi kunazo zonke, njengezinhloko zekhanda ezikhuphukela kuma-10 amaphesenti noma ngaphezulu kwe-THD emazansi.
Okwesithathu, sisesimweni sokuqala sokuqonda ukulinganisa kwezilinganiso ze-transducers zomsindo. Ngicabanga ukuthi imboni yenze kahle kahle nge- CEA-2010 subwoofer yokukhishwa / ukulinganisa izilinganiso , kodwa ngaphandle kwalokho, izilinganiso zokuhlanekezela kwezinguquko ze-audio transducers azivamile ukwenza. Sizenza nge-headphones ngoba kulula ukuhlukanisa abathengi abavela emiphumeleni yomsindo wemvelo; nezikhulumi, ezizodinga ikamelo le-anechoic. Kodwa ngenxa yokuthi senza izilinganiso akusho ukuthi sinokuqonda okuphelele impikiswano yabo.
Okwesine, ngiyazi abantu abaningi abenza izikrini zekhanda, futhi bonke engibaziyo banqika ukudweba iziphetho ezithile ezilinganisweni zabo. (Njengoba bonke abantu abaqhuba isayensi kufanele babe.) Isilinganiso senombolo yeselula sisesekuqaleni; sinamathela ezindinganisweni ezingapheli futhi ezingaphelele, ngakho-ke wonke ochwepheshe uphoqeleka ukuba alandele isahlulelo sakhe nemikhuba emihle, futhi alungise amasu akhe kunoma imuphi imishini yokulinganisa anakho. Ngakho-ke uma ungakaze wenze isilinganisi sekhanda empilweni yakho futhi udweba zonke izinhlobo zeziphetho eziqondile, eziqinisekisiwe ezivela kwisethi yemisindo yekhanda, uhlaziya ulwazi lwakho nobuchwepheshe bakho.
06 ka-07
I-Oppo Digital PM-1 Impedance
Ukuphakama kwemfucuza (ukulandelana okuluhlaza obumnyama) nesigaba (ukukhanya okuluhlaza okwedlulele) kwe-PM-1, isiteshi esifanele. Kungcono uma zombili lezi zindlela zibukeka njengezithenga ngoba kungenzeka ukuthi impedance ephelele emafrijini ngokuvamile ikunikeza impendulo ehambisanayo uma ushintsha amadivayisi omthombo. Futhi ngempela, i-PM-1 ihamba njenge-flat as headphones, i-impedance yama-32 ohms (efana nesilinganiso) kuyo yonke ibhodi yomsindo, kanye nesigaba sokungabi nalutho esincane.
07 ka-07
I-Oppo Digital PM-1 Isolation
Nasi indawo ebuthakathaka yekhanda lokubuyiselwa emuva. Ishadi lapha libonisa ukuhlukaniswa kwesiteshi esifanele se-PM-1, okungukuthi, ikhono layo lokuvimba umsindo wangaphandle. Izinga elingezansi ku-75 dB likhombisa ukunakekelwa komsindo wangaphandle - okusho ukuthi, 65 dB eshadini kusho ukunciphisa -10 dB emisindeni engaphandle kule mvamisa. I-line engezansi ishadi, kungcono. Ukuhlukaniswa kwe-PM-1 empeleni kungcono kunokulinganisa i-headar magnetic headphone evulekile, nakuba kunjalo, cishe akukho ukuhlukaniswa ngezikhathi ezingezansi kwe-3 kHz.