Vatengi vazhinji vanogara vachibvunza FMUSER nezve mamwe matambudziko ane chekuita nekutapurirana. Pakati pavo, vanogara vachitaura shoko rokuti kukanganisa. Saka chii chinonzi distortion? Sei pane kukanganisa? Kana iwe uri kuvaka nhepfenyuro yeFM uye uri kutsvaga nyanzvi FM radio transmitter, unogona kuwana mamwe matipi akakosha kubva papeji ino.

gutsikana

Chii chinonzi Audio Distortion?

Nehunyanzvi, kukanganisa chero kutsauka muchimiro cheaudio waveform pakati pemapoinzi maviri munzira yechiratidzo. Iwe unogona zvakare kunzwisisa kuti kukanganisa ndiko kushandura chimiro chepakutanga (kana mamwe maitiro) echinhu.

Mukuteerera, kukanganisa nderimwe remazwi anowanzo zivikanwa kupfuura zvinozivikanwa nevanhu vazhinji pavanoishandisa.

Pakutaurirana nemagetsi, zvinoreva kushandura waveform yechiratidzo chinotakura ruzivo mumudziyo wemagetsi kana nzira yekutaurirana, senge redhiyo inomiririra ruzha kana vhidhiyo inomiririra mufananidzo.

Panguva yekurekodha nekutamba, kukanganisa kunogona kuitika panzvimbo dzakawanda muketani yechiratidzo. Kana imwe frequency (test toni) ichiridzwa musystem uye iyo inobuda ine akawanda ma frequency, nonlinear kukanganisa kuchaitika. Kana chero chinobuda chisina kuenzana neyakaiswa chiratidzo chegiyori, iruzha.

Kazhinji kutaura, ese maodhiyo edhiyo anozokanganiswa kusvika pamwero wakati. Equipment ine nyore nonlinearity inoburitsa nyore kukanganisa; Midziyo yakaoma inoburitsa kukanganisa kwakaoma kuri nyore kunzwa. Iko kukanganisa kunowedzera. Kushandisa midziyo miviri isina kukwana nguva dzose kunoburitsa kukanganiswa kwekunzwa pane kushandisa chero mudziyo wega.

Iyo nzira yekumisikidzwa kwechiratidzo cheodhiyo yakangofanana kana mufananidzo uchipfuura nepakati netsvina kana yakakuvadzwa lens, kana mufananidzo wacho wakazara kana "kunyanya kufumurwa".

Tichifunga nezvekunzwisisa uku, kunenge chero kunzwikwa kwemazwi (equalization, compression) inzira yekukanganisa. Zvimwe zvinoitika kuti zvakanaka. Mamwe marudzi ekukanganiswa (harmonic distortion, aliasing, clipping, crossover distortion) anoonekwa seasingadiwi, kunyangwe dzimwe nguva anoshandiswa zvakanaka uye anoonekwa sechinhu chakanaka.

Nei Kukanganisa Kuchikosha?

Kukanganisa kazhinji hakudiwi, saka mainjiniya anoedza kuibvisa kana kuideredza. Zvisinei, mune dzimwe nguva, kukanganisa kunogona kudiwa, somuenzaniso, kukanganisa kunoshandiswawo semutambo wemimhanzi, kunyanya pamagitare emagetsi.

Kuwedzera ruzha kana mamwe masaini ekunze (kuhumming, kupindira) hakuonekwe sekukanganisa, kunyangwe pesvedzero yekukanganisa kwehuwandu dzimwe nguva inosanganisirwa muruzha. Hunhu metrics anoratidza ruzha uye kukanganisa anosanganisira chiratidzo-kune-ruzha reshiyo uye kukanganisa (SINAD) reshiyo uye yakazara harmonic kukanganisa pamwe neruzha (THD+N).

Mune masisitimu ekuderedza ruzha, senge Dolby system, chiratidzo chekuteerera chinofanira kusimbiswa, uye zvese zvikamu zvechiratidzo zvinokanganiswa nemaune neruzha rwemagetsi. Zvadaro inofananidzwa "isina kukanganiswa" mushure mekupfuura nemugero wekukurukurirana une ruzha. Kubvisa ruzha muchiratidzo chakagamuchirwa.

Asi kukanganisa hakugamuchirwe zvakanyanya panguva yekufona kwemusangano nekuti isu tinoda kuti ruzha ruve rwechisikigo sezvinobvira. Somuenzaniso, munziyo, kukanganisa kunogona kupa humwe unhu kuchiridzwa, asi pakutaura, kukanganisa kunogona kuderedza zvikuru kunzwisisa.

Distortion kutsauka kubva kune yakanakira ruzha curve. Distortion inokonzeresa kuti chimiro cheodhiyo waveform chichinje, zvinoreva kuti chinobuda chakasiyana nekupinza.

Kuti udzivise kukanganisa, kugadzirwa kwemichina yemidziyo inoshandiswa yakakosha zvikuru. Nguva dzose shandisa yakasimba uye yakagadzikana chimiro kudzivirira deformation. Kushandiswa kwemidziyo yemagetsi kunodiwa zvakare. Chiratidzo-ku-ruzha reshiyo uye hunhu hunochinja hunofanira kunge hwakanaka kwazvo, kanenge CD mhando, kuti ishande nemazvo.

Pamusoro pezvo, vatauri vakanaka chaizvo vane kushomeka kwakaderera vanodiwa kuitira kuti mabasa akadai sekudzima echo ashande sezvaitarisirwa.

Chii Chinokonzera Kukanganisa?

Kana iyo yakabuda yemudziyo weodhiyo isingakwanise kuteedzera inopinza zvakakwana uye nemazvo, chiratidzo chinozokanganiswa. Izvo zvakachena zvemagetsi zvikamu (amplifiers, DACS) echeni yedu yechiratidzo kazhinji yakanyanya kurongeka kupfuura electroacoustic components (zvinonzi transducers). Masensa anoshandura masiginecha emagetsi kuita machaniko ekufamba kuti abudise ruzha, semataurirwo - uye zvichipesana, semamaikorofoni. Zvikamu zvinofamba uye magineti zvinhu zvetransducer zvinowanzova zvisina mutsara kunze kweiyo nhete yekushanda. Zvisinei, kana ukasunda mudziyo wemagetsi kuti ukudze chiratidzo kupfuura chaungagona, zvinhu zvichakurumidza kutanga kuipa.

Zvinotevera ndizvo zvikonzero zvekukanganisa:

• Transistors/machubhu asina simba
• Kuremerwa nematunhu
• Defective resistors
• Leaky coupling kana leaky capacitors
• Kufananidzwa kwakashata kwezvinhu zvemagetsi paPCB

Distortion inoshandiswa nekugadzira mukugadzira mimhanzi, asi iri dingindira rakazara pacharo. Zvatiri kutarisa pano ndezvekuti kukanganisa mukuburitsa odhiyo - inozivikanwawo senzira yekutamba - zvinoreva kuti unoteerera sei kuburikidza nevatauri kana mahedhifoni. Kuti uwane kudhindwa kwakaringana, ichi ndicho chinangwa chikuru cheHi-fi zvigadzirwa. Kukanganiswa kwese kunonzi kwakaipa. Chinangwa chevagadziri vemidziyo ndechekubvisa kukanganisa zvakanyanya sezvinobvira.

Mhando dzeKukanganisa

• The amplitude kana nonlinear kukanganisa
• Frequency kukanganisa
• Phase distortion
• Yambuka nekutsveyamisa
• Nonlinear kukanganisa
• Frequency kukanganisa
• Phase shift kukanganisa

Yakanyanya Yakaderera Yakadzika Distortion FM Transmitter Mugadziri

Semumwe weanonyanyo zivikanwa pasirese anotungamira midziyo yekutepfenyura redhiyo vagadziri uye vatengesi, FMUSER yakabudirira kupa zviuru zvenhepfenyuro kubva kunyika dzinopfuura mazana maviri pasirese nekushomeka kwepamusoro-simba redhiyo FM, masisitimu ekutepfenyura antenna, uye yakazara redhiyo turnkey mhinduro, kusanganisira online tekinoroji rutsigiro uye yakazara mushure mekutengesa sevhisi. . Kana iwe uchida chero ruzivo nezve redhiyo chiteshi kuvaka, ndapota sununguka bata FMUSER uye isu tichakupindura iwe nekukurumidza sezvinobvira!