Oppo Digital PM-1 Matakan Wayoyin

01 na 07

Oppo Digital PM-1 Yanayin Sauyawa

Brent Butterworth

Na auna aiki na Oppo Digital PM-1 yadda zan auna sauran kunne kunne, ta amfani da na'urar GRAS 43AG / kunne, mai jarida Clio FW, mai kwakwalwa mai kwakwalwa mai amfani da software na TrueRTA tare da M-Audio MobilePre na USB. dubawa, da kuma Gaskiya na Musamman V-Za a iya ƙarawa mai karawa. Na ƙaddamar da ma'auni don kulawa da kunne (ERP), maimakon ma'anar sararin samaniya inda hannunka ya rataya tare da bayanan kunnen kunnenka idan ka danna hannunka a kunne. Babu ramuwa ga EQ - watau filin EQ - an yi aiki. An yi dukkan ma'aunai tare da kawunansu wadanda aka sanya su.

Shafin da ke sama yana nuna nunawa na mita na PM-1 a gefen hagu (blue) da dama (ja) tashoshi, tare da matakin gwajin da aka rubuta zuwa 94 dB @ 500 Hz. Babu daidaituwa ga abin da ya haifar da mayar da martani a cikin kunne a kunne, amma wannan nauyin ya nuna sauti mai tsaka. Yawancin masu kunnuwa suna da karin amsawa a 3 kHz ko haka (wanda aka yi tunanin yin sautin muryar sauti kamar na masu magana a cikin daki na ainihi), kuma wannan yana yin, amma 3 kHz hawan yana da m a game +6 dB (a yawancin su sun fi kamar +12 dB). Akwai sauran m, kuma matukar raguwa, mafi girma a tsakiya a 8.8 kHz.

Sensitivity of PM-1, wanda aka auna tsakanin 300 Hz da 3 kHz tare da siginar 1 mW da aka ƙayyade ga ƙaddarar 32 ohms ne aka ƙaddara shi ne 101.6 dB, wanda yake da kyau ga maɓalli mai mahimmanci.

Idan kana da wani bayani ko tambayoyi game da waɗannan ma'auni, don Allah a saka su a kan asalin asalin da ke magana akan wannan labarin.

02 na 07

Oppo Digital PM-1 vs. Audeze LCD-X vs. HiFiMan HE-6

Brent Butterworth

Wannan shafukan yana nuna adadin mota na tashoshin murya mai sauƙi na murya mai girma na uku: Fitilar Oppo na PM-1 (alama mai launi), Akeze LCD-X (red trace) da HiFiMan HE-6 (kore alama). Dukkanin ma'auni guda uku kusan 50 Hz da 1.5 kHz. Fiye da haka, PM-1 yana ƙaddamar da bambanci tsakanin LCD-X da HE-6, wanda ya nuna cewa yana iya kasancewa mafi maɓalli a cikin wannan bunch.

03 of 07

Oppo Digital PM-1 Yanayin Yanayin, 5 vs. 75 Ohms Sources

Brent Butterworth

Wannan yana nuna amsawar mita na PM-1 a tashar dama lokacin da Fidelity na Musical V-Can amp 5-ohm (red trace) ya samu, kuma tare da 70 ohms juriya da aka ƙaddara don ƙirƙirar 75 ohms total impedance output (kore alama). Kyakkyawan sakamako a nan zai zama layi biyu wanda ya ɓace gaba ɗaya, wanda zai nuna cewa ma'aunin ton na PM-1 bai canza ba lokacin da kake canza na'urori masu tushe. Kuma kamar yadda kake gani a nan, sakamakon PM-1 game da wannan gwaji yana kusa da cikakke.

04 of 07

Oppo Digital PM-1 Spectral Decay

Brent Butterworth

Rikicin launi (ruwan ruwa) mãkirci na PM-1, dama tashar. Dogon blue / kore streaks nuna alamar, wanda yawanci wanda ba a so. Wannan muryar ba ta nuna alamar abin da ke faruwa ba. (Haka ne, kuna ganin cin hanci da raguwa a cikin bass, amma wannan na al'ada ne.) Ka lura cewa asalin asalin da na buga ya nuna ƙarancin lalacewa a duk fadin murya; a kan ainihin asalin Ina tsammanin na manta da in sanya kayan damping akan budewar PM-1, wanda na sabawa tare da masu kunnuwa masu kunnawa don kada muryar su ta sake juyo a cikin labarina.

05 of 07

Oppo Digital PM-1 Zubar da ciki vs. Frequency a 100 dBA

Brent Butterworth

Ƙasar jituwar jituwa (THD) na PM-1, tashar hagu, aka auna a matakin gwaji na 100 dba (alamar orange) da 90 dba (kore alama). Abin da kake son ganin a nan shi ne layin da ke aiki sosai a kan chart. PM-1 ba shi da murya mai kusa kusa da zane a cikin muryar Audeze, amma PM-1 ya nuna rikici ne kawai a cikin wani nau'i mai zurfi tsakanin 220 da 300 Hz, yana zuwa zuwa kashi 6 cikin dari a 100 dBA da 2 kashi a 90 dba.

Na ga wasu sharuddan da sharuddan game da wannan jita a kan dandalin Intanet, kuma ina so in jaddada wasu abubuwa da suke da muhimmanci don fahimtar wannan karfin - wanda, kamar yawancin ma'aunin ƙira, yana da sauƙi a kuskure.

Na farko, 100 DBA shine matakin sauraron ƙararrawa. Na zabi cewa a matsayin gwajin gwaji ba saboda shine matakin sauraron ra'ayi ba, amma saboda matakin da wasu kunne zasu iya haifar ba tare da rikici ba kuma wasu baza su iya ba. Na yi amfani da ma'auni na kowane wayo a matakan ƙananan amma na gane cewa a al'amuran sauraron al'ada, karuwar kusan ba ta da wata mahimmanci.

Abu na biyu, lokacin da na iya auna nau'ukan kunne masu yawa da kuma kwatanta sakamakon binciken ga ra'ayoyin ra'ayi na masu sauraro na da nake amfani dashi, na koyi yadda kuma irin nauyin murya ya fi saurara. A cikin ma'aunin (174 kullun kunne har zuwa yau), Na gano cewa masu sauraro sun ji labarin jin murya ne kawai a cikin lokutta mafi tsanani, kamar muryoyin kunne wanda ya kai kashi 10 cikin dari ko THD mafi girma a cikin bass.

Abu na uku, muna har yanzu a cikin mataki na farko na ganewa game da matakan juyawa na masu karɓan sauti. Ina tsammanin masana'antu sunyi kyau sosai tare da kayan aiki na CEA-2010 na kayan aiki / kayan ƙaddamarwa , amma in ba haka ba, matakan juyayi na masu sassaucin ra'ayi masu sauƙi suna da wuya. Muna yin su da masu kunnuwa don yana da sauƙi don ware masu sassauci daga tasirin muhalli; tare da masu magana, wanda zai buƙaci ɗakin ɗakin. Amma saboda kawai muna yin ma'aunai ba ma'ana muna da cikakkun fahimtar abubuwan da suke faruwa.

Na huɗu, Na san mutane da yawa waɗanda suke yin matakan wayar hannu, kuma duk waɗanda na sani ba su da kuskure su kusantar da ƙayyadaddun ƙaddara daga ma'auninsu. (Kamar yadda duk masu yin aikin kimiyya ya kamata su kasance.) Har ila yau, muryar lasifikar yana cikin jariri; muna makaranta tare da ka'idojin da ba a cika ba, don haka kowane mai sana'a ya tilasta bin bin hukuncinsa da mafi kyawun ayyukansa, da kuma daidaita hanyoyin da ya dace da kayan aikin da ya mallaka. Don haka idan ba ka taba yin amfani da murya ba a cikin rayuwanka kuma kana zane duk wasu ƙididdiga, ƙuduri mai ƙarfi daga salo na ma'auni, za ka ci gaba da fahimtar saninka da kwarewa.

06 of 07

Oppo Firayim Minista PM-1

Brent Butterworth

Girman ƙarancin duhu (launi mai duhu) da kuma lokaci (haske mai haske) na PM-1, tashar dama. Zai fi kyau idan duka waɗannan layi sunyi la'akari da la'akari saboda yiwuwar abin da ke cikin kullun yana ba ka amsa mai mahimmanci lokacin da kake canza na'urori masu tushe. Kuma lalle ne, PM-1 yana kusa da layi kamar yadda masu sauraron kunne suka samu, tare da rashin daidaituwa na 32 ohms (daidai da ƙidayar) a duk faɗin ɗayan murya, da kuma matsala maras lokaci.

07 of 07

Oppo Digital PM-1 Ragowa

Brent Butterworth

A nan ne matakan rauni na murya mai kunnawa. Tasirin nan ya nuna rabuwa da tashar hanyar PM-1, watau, ikonsa don toshe sauti na waje. Matakan da ke ƙasa 75 dB suna nuna alamar muryar waje - watau, 65 dB a kan ginshiƙi yana nufin rage -10 dB a waje da sauti a wannan sautin mitar. Ƙananan layin yana kan chart, mafi kyau. Rawancin PM-1 shine mafi kyau fiye da matsakaici ga maɓalli mai kwakwalwa mai ban mamaki, ko da yake har yanzu, akwai kusan babu rabuwa a ƙananan ƙananan ƙananan kHz 3 kHz.