1. Isithethi: ukuze sikwazi ukumelana nempembelelo ye-pulse enamandla ngequbuliso kwisignali yenkqubo ngaphandle komonakalo okanye ukugqwetheka. Nantsi ixabiso elibalulekileyo ekufuneka libhekiswe kulo: amandla alinganiselweyo esithethi esikhethiweyo kufuneka abe mathathu kunalawo ebalo lethiyori.
2. I-Power amplifier: xa ithelekiswa ne-transistor power amplifier, indawo yokugcina amandla efunekayo yahlukile. Oku kungenxa yokuba i-overload curve ye-tube amplifier ithambile. Kwincopho yesignali yomculo egcwele kakhulu, i-tube amplifier ayivelisi ngokucacileyo into ye-cutting wave, kodwa yenza incam yencopho ibe yi-round. Oku yiloo nto sihlala siyibiza ngokuba zii-flexible shearing peaks. Emva kwe-transistor power amplifier kwindawo yokugqithisa, i-nonlinear distortion iyanda ngokukhawuleza, nto leyo evelisa i-wave cutting enzima kwisignali. Ayenzi i-peak ibe yi-round, kodwa iyicoca kakuhle. Abanye abantu basebenzisa i-compound impedance yokumelana, i-inductance kunye ne-capacitance ukulinganisa i-loudspeaker, kwaye bavavanye amandla okwenyani emveliso yeentlobo ezahlukeneyo zee-amplifiers zamandla e-transistor ezikumgangatho ophezulu. Iziphumo zibonisa ukuba xa umthwalo une-phase shift, kukho i-power amplifier ebizwa ngokuba yi-100W, kwaye amandla okwenyani emveliso yi-5W kuphela xa i-distortion iyi-1%! Ke ngoko, ukhetho lwesixa esigciniweyo se-transistor power amplifier:
I-amplifier yokuthembeka okuphezulu: amaxesha ali-10
Isandisi-mandla samandla esikumgangatho ophezulu sendlu: amaxesha ama-6
I-amplifier yamandla aphakathi yoluntu: amaxesha ama-3 amaxesha ama-4
I-amplifier yamandla etyhubhu inokuba ncinci kakhulu kunomlinganiselo ongentla.
3. Ingakanani i-margin ekufuneka ishiywe kwinqanaba eliphakathi loxinzelelo lwesandi kunye nenqanaba eliphezulu loxinzelelo lwesandi lenkqubo. Kufuneka kuxhomekeke kumxholo kunye nendawo yokusebenza kwenkqubo yosasazo. Le 10dB incinci ingafunekiyo, kumculo we-pop wanamhlanje, ukutsiba kwe-bungee kunye neminye umculo, kufuneka ishiye i-20 ~ 25dB ephindaphindayo, ukuze inkqubo yesandi. Isebenze ngokukhuselekileyo nangokuzinzileyo.

Isandisi-sandisi seCinema esingu-5.1/7.1

Uthotho lwe-CT lwesithethi sesinema yasekhaya