Songa ngekhompyutheni yomenzi-okanye mhlawumbi kunye nokufakelwa kweevenkile zomsindo - kunye nokuba unokufunda into ebizwa ngokuba yi-Total Harmonic Distortion (echanekileyo njenge-THD). Unokukufumana oku kubhalwe kwiithethi, i-headphones, abadlali be-media / MP3, abakhuliseli, abaphambili, abawamukeliyo kunye nokunye. Eyona nto, ukuba kubandakanya ukuvelisa isandi nomculo, kuya ku (kufaneleke) kube nale nkcazo ekhoyo. Ukubaluleka kwamaHarmonic kubalulekile xa ucinga izixhobo, kodwa kuphela kwindawo ethile.
Yintoni Iyonke Impazamo yeHarmonic?
I-Specification ye-Total Harmonic Distortion enye eyalekisa iimpawu zomsindo kunye neziphumo, ngokuhlukileyo kwizigaba ezilinganiswe njengepesenti. Ngoko unokubona i-THD ibhalwe njengama-0.02 ekhulwini kunye neemeko ezichaziweyo zohluli kunye nombane olinganayo kwi-parenthesis emva kwayo (umz. 1 kHz 1 Vrms). Kukho ngokwenene isibalo sematriki esibandakanyekayo ukubala i-Total Harmonic Distortion, kodwa yonke into efuna ukuyiqonda kukuba ipesenti ibonisa ukuphazamiseka kwe-harmoniki okanye ukuphambuka kwesalathisi semveliso - iipesenti eziphantsi zingcono. Khumbula, umqondiso wokuvelisa uveliso kwaye awuzange ube nekopi epheleleyo yegalelo, ngakumbi xa izakhi ezininzi zibandakanya kwinkqubo yomsindo. Xa uthelekisa iimpawu zombini kwigrafu, unokuthi uqaphele ulwahlulo oluncinane.
Umculo wenziwa ngamaziko asemgangathweni kunye nama- harmonic . Ukuhlanganiswa kwezixhobo ezisisiseko kunye nama-harmonic zinika izixhobo zomculo ezihlukeneyo kwaye zivumela indlebe yabantu ukuba bahlule phakathi kwabo. Umzekelo, i-violin edlala i-A note ishicilela i-frequency frequency ye-440 Hz ngelixa iphinda ivelise ii-harmonics (ukuphindaphinda kwe-frequency frequency) kwi-880 Hz, i-1220 Hz, i-1760 Hz, njalonjalo. I-cello idlala ngokulinganayo Isalathisi njengoko i-violin isandila ngathi i-cello ngenxa yeefom ekhethekileyo kunye ne-harmonic.
Kutheni i-Distribution yeHarmonic ibaluleke kakhulu
Xa i-Distribution Harmonic esebenzileyo iye yanda kwinqanaba elithile, ungalindela ukuba ukuchaneka kwesandi kutyeshelwe. Oku kwenzekayo xa iifom ze-harmonic ezingafunekiyo - ezingabonakali kwimbonakalo yangempela yokufakelwa - zenziwe kwaye zongezwa kwisiphumo. Ngoko i-THD ye-0.1 yepesenti yayiza kuthetha ukuba iipesenti eziyi-0.1 zesalathisi esiphumelayo zinyani kwaye ziqukethe ukuphazamiseka okungafunekiyo. Ukuguqulwa okunjalo kungakhokelela kumava apho izandi zivakala zingekho ngokwemvelo kwaye azifani nokuba zifanele njani.
Kodwa ngokwenene, i-Total Harmonic Distortion ayinakuqonda kwiindlebe zabantu, ingakumbi kuba abavelisi benza izinto kunye neenkcukacha ze-THD eziziincinci ezincinci zepesenti. Ukuba awukwazi ukuqhubeka uvahluko wepesenti yepesenti, ngoko awukwazi ukujonga isilinganiselo se-THD se-0.001 pesenti (okungenokuba nzima ukulinganisa ngokuchanekileyo). Akunjalo kuphela, kodwa inkcazo ye-Total Harmonic Distortion iyinani lexabiso eliqhelekileyo elingaqwalaselanga ukuba i-harmonics ye-even-and-down-order iyanzima ukuba abantu bakuve ngokumelene nabahlobo babo abangaqhelekanga nabangaphezulu. Uhlobo lomculo ludlala indima encinci.
Zonke iicandelo zongeza enye inqanaba lokuphazamiseka, ngoko kuqikelele ukuvavanya amanani ukwenzela ukuba kugcinwe ukuhlambuluka komsindo. Nangona kunjalo, ipesenteji ye-Total Harmonic Distortion ayibalulekanga inkcazo xa ikhangele umfanekiso omkhulu, ngakumbi ekubeni ixabiso elininzi lihlala lingaphantsi kwama-0.005 ekhulwini. Ulwahlulo oluncinci kwi-THD ukusuka kwelinye iqela lenkampani ukuya kwelinye lingaba lukhulu ngokubhekisele kwezinye izinto, njengemithombo yemisindo esemgangathweni, i- acoustics yamagumbi , kunye nokukhetha izithethi ezifanelekileyo , ukuqala.