Nīnau pinepine nā mea kūʻai aku iā FMUSER e pili ana i kekahi mau pilikia pili i ka transmitter. Ma waena o lākou, ʻōlelo mau lākou i ka huaʻōlelo distortion. No laila he aha ka distortion? No ke aha he distortion? Inā ʻoe e kūkulu nei i kahi lekiō FM a ke ʻimi nei ʻoe i kahi loea Mea hoʻolele lekiō FM, hiki iā ʻoe ke loaʻa i kekahi mau ʻōlelo aʻoaʻo nui mai kēia ʻaoʻao.

maʻiʻo

He aha ka Audio Distortion?

ʻO ke ʻano ʻenehana, ʻo ka distortion kekahi ʻokoʻa i ke ʻano o ka nalu leo ​​ma waena o ʻelua mau kiko ma ke ala hōʻailona. Hiki iā ʻoe ke hoʻomaopopo i ka hoʻololi ʻana i ke ʻano kumu (a i ʻole nā ​​​​ʻano ʻē aʻe) o kekahi mea.

Ma ka leo, ʻo ka distortion kekahi o nā huaʻōlelo maʻamau ma mua o ka ʻike ʻana o ka hapa nui o ka poʻe ke hoʻohana lākou.

Ma ke kamaʻilio a me ka uila, ʻo ia ke ʻano o ka hoʻololi ʻana i ke ʻano nalu o kahi hōʻailona e lawe ana i ka ʻike ma kahi mea uila a i ʻole kaila kamaʻilio, e like me ka hōʻailona leo e hōʻike ana i ke kani a i ʻole kahi hōʻailona wikiō e hōʻike ana i kahi kiʻi.

I ka wā o ka hoʻopaʻa ʻana a me ka pāʻani ʻana, hiki ke hoʻololi ʻia ma nā wahi he nui o ke kaulahao hōʻailona leo. Inā hoʻokani ʻia kahi alapine hoʻokahi (leo hoʻāʻo) i ka ʻōnaehana a loaʻa i ka pukana nā alapine he nui, e hiki mai ka distortion nonlinear. Inā ʻaʻole kūlike kekahi puka i ka pae hōʻailona hoʻokomo i hoʻopili ʻia, ʻo ia ka walaʻau.

Ma ka ʻōlelo maʻamau, e hoʻololi ʻia nā leo leo āpau i kekahi ʻano. ʻO nā lako me ka maʻalahi nonlinearity e hana i ka distortion maʻalahi; Hoʻopuka nā mea paʻakikī i nā distortions paʻakikī i maʻalahi ke lohe. He huila ka distortion. ʻO ka hoʻohana mau ʻana i ʻelua mau mea pono ʻole e hoʻonui i ka distortion auditory ma mua o ka hoʻohana ʻana i kekahi mea hana wale nō.

ʻO ke ala o ka hoʻoheheʻe ʻana i ka hōʻailona leo he ʻano like ia me ka wā e hele ai ke kiʻi ma kahi leki lepo lepo a poino paha, a i ʻole i ka wā i piha ai ke kiʻi a i ʻole "overexposed".

Ma ka ʻike ʻana i kēia ʻike, ʻaneʻane kekahi ʻano hoʻoili leo (equalization, compression) kahi ʻano o ka distortion. Ua maikaʻi kekahi. ʻO nā ʻano distortion ʻē aʻe (harmonic distortion, aliasing, clipping, crossover distortion) ʻaʻole makemake ʻia, ʻoiai i kekahi manawa ua hoʻohana maikaʻi ʻia a manaʻo ʻia he mea maikaʻi.

No ke aha he mea nui ka distortion?

ʻAʻole pono ka distortion, no laila e hoʻoikaika nā ʻenekinia e hoʻopau a hōʻemi paha. Eia nō naʻe, i kekahi mau hihia, koi ʻia paha ka distortion, no ka laʻana, hoʻohana ʻia ka distortion ma ke ʻano he hopena mele, ʻoi aku hoʻi ma nā kīkā uila.

ʻO ka hoʻohui ʻana i ka walaʻau a i ʻole nā ​​​​hōʻailona waho ʻē aʻe (humming, interference) ʻaʻole i manaʻo ʻia he distortion, ʻoiai ʻo ka mana o ka distortion quantization i kekahi manawa e hoʻokomo ʻia i ka walaʻau. ʻO nā metric maikaʻi e hōʻike ana i ka walaʻau a me ka distortion e pili ana i ka ratio signal-to-noise ratio a me distortion (SINAD) a me ka huina harmonic distortion me ka walaʻau (THD+N).

I loko o nā ʻōnaehana hoʻohaʻahaʻa walaʻau, e like me ka ʻōnaehana Dolby, pono e hoʻokūpaʻa ʻia ka hōʻailona leo, a ʻo nā ʻano āpau o ka hōʻailona e kuhi hewa ʻia e ka walaʻau uila. A laila ua like ia me ka "undistorted" ma hope o ka hele ʻana i ke ala kamaʻilio walaʻau. E hoʻopau i ka walaʻau i ka hōʻailona i loaʻa.

Akā ʻaʻole makemake ʻia ka distortion i ka wā o ka hālāwai kūkā no ka mea makemake mākou i ke kani e like me ka hiki. No ka laʻana, ma ke mele, hiki i ka distortion ke hāʻawi i kekahi mau hiʻohiʻona i ka mea kani, akā no ka haʻi ʻōlelo, hiki i ka distortion ke hōʻemi nui i ka ʻike.

ʻO ka distortion kahi haʻalele ʻana mai ka pihi kani kūpono. Hoʻololi ka distortion i ke ʻano o ka hawewe leo, ʻo ia hoʻi, ʻokoʻa ka hoʻopuka mai ka hoʻokomo.

I mea e pale aku ai i ka distortion, he mea nui ka hoʻolālā mechanical o nā mea hana i hoʻohana ʻia. E hoʻohana mau i kahi hoʻolālā ikaika a paʻa e pale i ka deformation. Pono pū ka hoʻohana ʻana i nā mea uila. Pono maikaʻi loa ka lakio hōʻailona-a-noise a me nā hiʻohiʻona ikaika, ma ka liʻiliʻi loa i ka maikaʻi CD, no ka hana pono.

Eia kekahi, pono nā mea haʻi'ōlelo maikaʻi me ka haʻahaʻa haʻahaʻa i hiki i nā hana e like me ka hoʻopau ʻana i ke kani ke hana e like me ka mea i manaʻo ʻia.

He aha ka hana ʻino?

Inā ʻaʻole hiki i ka mea hoʻopuka o kahi mea leo ke hahai pono i ka hoʻokomo ʻana me ka pololei a me ka pololei, e hoʻololi ʻia ka hōʻailona. ʻO nā ʻāpana uila maʻemaʻe (amplifiers, DACS) o kā mākou kaulahao hōʻailona ʻoi aku ka pololei ma mua o nā mea electroacoustic (i kapa ʻia nā transducers). Hoʻololi nā mea ʻike i nā hōʻailona uila i ka neʻe mīkini e hana ai i ke kani, e like me nā mea haʻi'ōlelo - a ʻo ia hoʻi, e like me nā microphones. ʻO nā ʻāpana hoʻoneʻe a me nā mea hoʻokalakupua o ka transducer maʻamau e lilo i nonlinear ma waho o ka pae hana haiki. Eia nō naʻe, inā ʻoe e pana i kahi mea uila e hoʻonui i ka hōʻailona ma mua o kona hiki, e hoʻomaka koke nā mea i ka ʻino.

Eia nā kumu o ka distortion:

• Nawaliwali transistors/paipu
• Hoʻopiha ʻia o nā kaapuni
• Nā pale pale hemahema
• Hoʻopili leaky a i ʻole nā ​​capacitors leaky
• Hoʻohālikelike kūpono ʻole o nā ʻāpana uila ma PCB

Hoʻohana ʻia ka distortion i ka hana mele, akā he kumuhana piha ia iā ia iho. ʻO ka mea a mākou e nānā nei ma aneʻi, ʻo ka distortion i ka hana hou leo ​​- ʻike ʻia hoʻi ʻo ke ala pāʻani - ʻo ia ke ʻano o kāu hoʻolohe ʻana ma o nā mea leo a i ʻole nā ​​​​headheads. No ka hana hou ʻana i ke kani pololei, ʻo ia ka pahuhopu nui o nā huahana Hi-fi. Manaʻo ʻia nā hewa a pau. ʻO ka pahuhopu o nā mea hana hana ʻo ka hoʻopau ʻana i ka distortion e like me ka hiki.

Nā ʻano o ka hoʻoheheʻe

• ʻO ka amplitude a i ʻole ka distortion nonlinear
• Hoʻokaʻawale pinepine
• ʻĀpana pae
• Kea ma luna o ka distortion
• ʻAʻohe laina laina
• Hoʻokaʻawale pinepine
• ʻO ka hoʻoneʻe ʻana o ka pae

ʻOi aku ka maikaʻi o ka haʻahaʻa haʻahaʻa haʻahaʻa FM Transmitter

E like me kekahi o nā alakaʻi kaulana loa o ka honua lako hoʻolele lekiō Manufacturers a me nā mea hoʻolako, ua hoʻolako kūleʻa ʻo FMUSER i mau kaukani o nā hale hoʻolaha mai nā ʻāina ʻoi aku ma mua o 200 a puni ka honua me ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa kiʻekiʻe-mana FM radio transmitters, FM transmitting antenna system, a me nā ʻōnaehana turnkey radio piha, me ke kākoʻo ʻenehana pūnaewele a me ka lawelawe ma hope o ke kūʻai aku. . Inā makemake ʻoe i kekahi ʻike e pili ana i ke kūkulu ʻana i ka lekiō, e ʻoluʻolu e ʻoluʻolu hoʻopili iā FMUSER a e pane koke aku makou ia oe!