49.152MHz a me 45.1584MHz: ʻO nā puʻuwai o nā leo kikohoʻe ma ka ʻoihana leo.

9.152MHz a me 45.1584MHz: ʻO nā "Heartbeats" o Digital Audio i ka ʻoihana leo

ʻO 49.152MHz a me 45.1584MHz ʻelua mau kī nui -kaomi pololei, i hoʻohana nui ʻia no ka hana ʻana i nā helu hōʻailona hōʻike no nā ʻōnaehana leo kikohoʻe. ʻO kā lākou hana koʻikoʻi, ʻo ia ka hāʻawi ʻana i nā hōʻailona kumu -waʻa paʻa no nā ʻano leo like ʻole ma o ka ʻenehana māhele alapine, a laila e hōʻemi ana i ka jitter manawa (Jitter) a me ka hōʻoia ʻana i ka maikaʻi o ka leo. Eia ka palapala noi a me ka hoʻohālikelike ʻenehana o nā mea ʻelua ma nā ʻano ʻokoʻa:

1. ʻO ka pilina a me nā kūlana leo leo

1. ʻO ka mahele pinepine a me ka helu laʻana

· 49.152MHz:

o Nā pahuhopu māhele alapine: 48kHz (maʻamau leo ​​ʻoihana), 96kHz, 192kHz.

o Nā ʻōkuhi:

§ 48kHz=49.152MHz ÷ 1024

§ 96kHz=49.152MHz ÷ 512

§ 192kHz=49.152MHz ÷ 256

o Nā kūlana kūpono: Hana kiʻiʻoniʻoni a me ke kīwī (48kHz), nā lawelawe hoʻoheheʻe (e laʻa, Netflix, Spotify), nā lako hoʻopaʻa leo ʻoihana.

· 45.1584MHz:

o Nā pahuhopu māhele alapine: 44.1kHz (CD sound quality), 88.2kHz, 176.4kHz.

o Nā ʻōkuhi:

§ 44.1kHz=45.1584MHz ÷ 1024

§ 88.2kHz=45.1584MHz ÷ 512

§ 176.4kHz=45.1584MHz ÷ 256

o Nā kūlana kūpono: pāʻani CD/SACD, nā ʻano waihona mālama mele kahiko (e laʻa, WAV, FLAC).

2. Nui -La'ana Ho'olikelike

· Hoʻolālā ʻelua-uaki: ʻO nā mea kiʻekiʻe -hopena kiʻekiʻe (e laʻa, dCS Vivaldi DAC) hoʻohui i ʻelua kristal i ka manawa like, hiki ke hoʻololi ʻakomi e kākoʻo i nā kumu leo ​​44.1kHz a me 48kHz.

· Asynchronous Sample Rate Conversion (ASRC): Hoʻohui i ka uaki ma o FPGA a i ʻole nā ​​ʻāpana i hoʻolaʻa ʻia, akā hiki ke hoʻokomo i ka jitter manawa hou, e pili ana i ka maikaʻi o ke kani.

2. Nā Kūlana Noi a me nā Koina ʻenehana

1. Lako Leo ʻOihana

· Lako Studio:

Ho'ohana 'ia ka 49.152MHz no ka ho'opuka 'ana i ka uaki 48kHz, me ka ho'onohonoho 'ana me ka - hope no ke ki'i'oni'oni a me ke kīwī.

Pono nā lako hana akamai (e laʻa, Prism Sound ADA-8XR) e kākoʻo i ka 44.1kHz a me 48kHz, e hoʻohana ana i ka hoʻolālā ʻelua-uaki.

· Pūnaehana hoʻolaha:

Hoʻohui ʻia nā ʻoliʻoli (e laʻa, Lawo mc²56) hilinaʻi ma 49.152MHz e hana i nā hōʻailona 48kHz, e hālāwai me nā kūlana leo leo kīwī hoʻolaha (e laʻa, AES3).

2. Nā Mea Hana Elele

· Aloha -Fi Audio System:

·

Hoʻohana nā mea pāʻani CD/SACD (e laʻa, Esoteric K-01XD) i ka 45.1584MHz no ka hoʻokō ʻana i ka pāʻani 44.1kHz.

Kākoʻo nā mea hoʻoholo hoʻoheheʻe kahawai (e laʻa, Linn Klimax DSM) i ka 48kHz kiʻekiʻe-hoʻonā kahe ma o 49.152MHz.

· Nā hale kiʻiʻoniʻoni:

Pono nā mea hoʻonui AV (e laʻa, Denon AVR-X8500H) me nā alapine ʻelua e hoʻohālikelike i ka maʻiʻo Blu-ray (48kHz) a me CD (44.1kHz).

3. Leo kaʻa a me nā mea lawe lima

· I loko o -kaʻa Nā Mea Hana Hōʻailona Kikohoʻe (DSP):

E hoʻohana i ka 49.152MHz no ka hoʻopuka ʻana i nā hōʻailona 48kHz, e hōʻemi ana i ka Jitter ma muli o ka -keakea i ka lako mana.

· Nā mea hoʻonui kelepona DAC paʻa (e laʻa, iFi Audio Hip-DAC):

E hoʻohui i ka mana haʻahaʻa 45.1584MHz kristal no ka hoʻopololei ʻana i ka pāʻani kumu leo ​​44.1kHz ma nā polokalamu kelepona.

## 3. Hoʻohālikelike ʻenehana a me nā manaʻo koho

Manaʻo koho:

· Kiʻiʻoniʻoni a me Television/Streaming Media: E hoʻokumu i ka 49.152MHz e hōʻoia i ka hoʻohālikelike ʻana me ka moʻo 48kHz.

· Pāʻani Mele a me CD/SACD: E koho i ka 45.1584MHz no ka hoʻolālā ʻana.

· Nui -Nūnaehana Kūlike: Hoʻohana i ʻelua -uaki + FPGA hoʻololi ikaika (e laʻa, MSB Reference DAC).

ʻO 49.152MHz a me 45.1584MHz ka "naʻau puʻuwai" o ka leo kikohoʻe ma ka ʻoihana leo, e lawelawe ana i ʻelua ʻōnaehana nui: kiʻiʻoniʻoni/telewele/streaming media (48kHz series) a me ka mālama mele (44.1kHz series). ʻO nā mea kiʻekiʻe -e hoʻemi i ka Jitter a hoʻihoʻi i ka maikaʻi o ka leo maʻemaʻe ma o ka -ʻelua papa hana uaki, -haʻahaʻa haʻahaʻa-mana, a me nā hoʻolālā PCB pololei. I ka wā e hiki mai ana, me ka ho'olaha 'ana i nā leo ho'onā ki'eki'e a me nā hopena leo immersive, e ho'omau 'ia ka ulu 'ana o ka 'enehana uaki i ka leo ultra{11}}ha'aha'a.