Beyond The Volume Control - Dynamic Range, Compression, uye Headroom
Zvinhu zvakawanda zvinoita kuti uwane mazwi akanaka mu stereo kana kumba yemitambo yekuteerera. Izwi rekutonga ndiyo nzira huru iyo vakawanda vanowana nhamba yakanyatsoteerera yekuteerera, asi haigoni kuita basa rose nguva dzose. Nyaya yemusoro yakasimba, simba rakakura, uye kushandiswa kwakasimba kune zvimwe zvikonzero zvinogona kubatsira pakuteerera nyaradzo.
Musoro Wakasimba-Iko Simba Rakawedzerwa Apo Paunenge Uchida?
Nokuda kwekamuri-kuzadza inzwi, stereo kana imba yemitambo yakagamuchirwa inoda kubudisa simba rakakwana kuvaridzi vako kuitira kuti unzwe zviri mukati. Zvisinei, sezvo mazwi anonzwika achigara achichinja mumabhuku ose emimhanzi uye mafirimu, mupikiri anofanirwa kuchinja simba rayo rinobuda nokukurumidza nenzira isingachinji.
Dzimba huru yemusoro inoreva kukwanisa kwekugamuchira mutsara we stereo / kumba, kana kuti amplifier, kuti abudise simba panzvimbo yakakwirira zvikuru kwenguva pfupi kuti agadzirire zvipikano zvemimhanzi kana zvakanyanya kuitika mumavhidhiyo. Izvi zvinonyanya kukosha muimba yemitambo, uko kuwedzerwa kwemhepo kuchinja kunoitika munguva yefirimu.
Dzimba huru yemusoro inoyerwa muDecibels (dB) . Kana anogamuchira / amplifier ane kodzero yekuwedzera kaviri simba rayo rinopfuurira simba rinobudiswa kwenguva pfupi kuti agadzire mapuranga emvura, ine 3db yeimba huru yemusoro. Zvisinei, kubatanidza simba rinobudiswa hakurevi kupetanidza huwandu. Kuti uite kaviri yevhesi kubva pane imwe nzvimbo yakagadzirwa, anogamuchira / amplifier anoda kuwedzera simba rayo rinobuda nechimwe chegumi.
Izvi zvinoreva kuti kana munhu akagamuchira / amplifier ari kubudisa 10 watts pane imwe nzvimbo uye kushanduka kamwe-kamwe mumhanzi inoda kaviri vhuni kwenguva shoma, mukumikidziridzi / mutambi inoda kukwanisa kukurumidza kubudisa watts zana.
Dynamic headroom capable yakabikwa mu hardware yeaigamuchira kana kuti amplifier, uye haigoni kuchinjwa. Zvakanaka, mvumo yemusha yemitambo iyo inenge iine 3db kana kuti yakawanda yeimba huru yemusoro ndizvo zvaungatarisa. Izvi zvinogona kuratidzirwawo nemupikiri wepamusoro-simba simba rinobudiswa-sekuti, nhepfenyuro, kana kuti simba, simba rekubudiswa kwezvinhu rinowedzera kuwanda kwehuwandu hwakataurwa kana kuyerwa RMS, Continuous, kana kuti FTC simba rekuita, izvi zvingava kuenzanirana kwe 3db kusimba musoro.
Kana iwe usingazivi kuti simba rekugadzirisa simba rinoshanda sei, tarisa nyaya yedu pamusoro pekuti simba re amplifier rinosanganiswa sei nekushanda kwemazwi .
Dynamic Range-Soft vs Loud
Mumutinhimira, ruzivo rwakakura ndiro chiyero chezwi guru-risina kusimbiswa rinobudiswa maererano nezwi rakanyorova rinenge richiri kunzwika. 1dB ndiwo mutsara muduku kudarika iyo nzeve yomunhu inogona kuona. Misiyano pakati pekonikiti nezwi rakanyanya rock (pamakiromita akafanana kubva munzeve yako) inenge 100dB.
Izvi zvinoreva kuti kushandisa dB chikamu, kambani ye rock ndiyo yakareba mabhiriyoni gumi kupfuura yakanyanyisa. Nokuda kwemimhanzi yakanyorwa, CD yakakwana inokwanisa kuburitsa 100db emhando yakasimba, nepo LP rekodhi iri pamusoro pe 70db.
Stereo, imba yemitambo yakagamuchirwa, uye zvigadziri zvinogona kubereka ruzivo rwakawanda rweCD kana rumwe ruzivo runogona kukonzera hurefu hwakakura hwakakura hunodiwa zvikuru.
Zvechokwadi, dambudziko rimwe chete rine zvinyorwa zvakanyorwa neruzhinji rukuru rune simba rukuru nderokuti "kure" pakati pezvikamu zvakaderera uye zvinokurudzira zvinogona kuvhiringidza.
Semuenzaniso, mumhanzi usina kukanganiswa, izwi rinogona kuonekwa richidirwa kunze kwezvinhu zvakasikwa uye mumabhaisikopo, iyo hurukuro inogona kuva yakanyanyisa kunzwisisika, nepo ruzha rukuru runogona kunge rusingagoni kukurira iwe asi vavakidzani vako, zvakare.
Apa ndipo apo Dynamic Compression inouya.
Dynamic Compression-Kunyanya Dynamic Range
Kudzvinyirira kwakasimba hakutauri kumhando dzekugadzirisa mafashoni anoshandiswa mumutauro we digital (funga MP3). Pane kudaro, kudzvinyirira kwakasimba ndiro chibvumirano chinobvumira vateereri kuti vachinje ukama huri pakati pepamusoro zvikamu zvezwi rwiyo uye zvikamu zvakanyanyisa zvezwi rwiyo paunenge uchitamba CD, DVD, Blu-ray Disc, kana imwe faira yefaira yemimhanzi.
Semuenzaniso, kana iwe ukaona kuti kuputika kana zvimwe zvikamu zvezwi rinonzwika zvikuru uye hurukuro inonyorova, iwe unoda kuderedza mhepo yakasimba iripo mumhanzi. Kuita izvi kuchaita kuti manzwiro emapapuriro asati aita seanzwika, asi iyo hurukuro icharira zvakanyanya. Izvi zvichaita kuti ruzha rukuru ruwedzere kunyange, runonyanya kukosha paunenge uchitamba CD, DVD, kana Blu-ray Disc pazasi pasi.
Paimba yemitambo yakagamuchirwa kana zviyero zvakafanana, chiyero chekugadzirisa kwakasimba kunoshandiswa kushandiswa kwekugadzirisa zvigaro zvinogona kunyorwa kushandiswa kwakasimba, shanje, kana kuti DRC chete.
Saizvozvowo zita rezita rinoshandiswa kudzvinyirira kushandiswa kwezvirongwa zvinosanganisira DTS TruVolume, Dolby Volume, Zvox Accuvoice, uye Audyssey Dynamic Volume. Mukuwedzera, mamwe maitiro akaoma / maitiro ekudzora masimba anogona kushanda munzvimbo dzakasiyana-siyana (zvakadai apo pachinoshandura mitsara paTVV kuitira kuti mitsara yose iine imwechete yepamusoro yepamusoro, kana kuti kugadzirisa mabhizimisi makuru mune purogiramu yeTV).
The Bottom Line
Nyaya yemusoro yakasimba, simba rakakura, uye kushandiswa kwakasimba kune zvinhu zvinokosha zvinokonzera huwandu hwehuwandu hwezwi hunoonekwa mumamiriro ekuteerera. Kana kugadzirisa mazinga aya hakugadziri matambudziko aripo, funga kutarisa kune zvimwe zvinhu zvakadai sekusavhiringidza uye nzvimbo acoustics .