C\u00f9ng v\u1edbi s\u1ef1 n\u00e2ng cao c\u1ee7a m\u1ee9c s\u1ed1ng v\u0103n h\u00f3a c\u1ee7a m\u1ecdi ng\u01b0\u1eddi, thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng (hi-fi set) c\u0169ng l\u1eb7ng l\u1ebd b\u01b0\u1edbc v\u00e0o h\u00e0ng v\u1ea1n gia \u0111\u00ecnh. Thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng thao t\u00e1c r\u1ea5t \u0111\u01a1n gi\u1ea3n. Ch\u1ec9 c\u1ea7n \u1ea5n nh\u1eb9 m\u1ea5y c\u00e1i l\u00ean b\u1ec1 m\u1eb7t ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u00e0 n\u00f3 s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u00ecm \u0111\u0129a, \u0111\u1ed5i \u0111\u0129a; t\u1ef1 \u0111\u1ed9ng ph\u00e1t ch\u01b0\u01a1ng tr\u00ecnh \u00e2m nh\u1ea1c m\u00e0 ta mu\u1ed1n th\u01b0\u1edfng th\u1ee9c. Thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c vi\u1ec7c \u0111\u00f3, \u0111i\u1ec3m m\u1ea5u ch\u1ed1t l\u00e0 do n\u00f3 c\u00f3 m\u1ed9t con chip nho nh\u1ecf – b\u1ed9 vi x\u1eed l\u00ed.<\/p>\n\n\n\n
Tr\u01b0\u1edbc h\u1ebft h\u00e3y xem x\u00e9t ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng \u0111\u1ed5i \u0111\u0129a c\u1ee7a d\u00e0n \u00e2m h\u01b0\u1edfng. Ch\u1ee9c n\u0103ng n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 nh\u1eb1m v\u00e0o d\u00e0n c\u00f3 c\u1ea5u tr\u00fac nhi\u1ec1u \u0111\u0129a (th\u01b0\u1eddng l\u00e0 ba \u0111\u0129a). V\u1ecb tr\u00ed c\u1ee7a ba \u0111\u0129a \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh t\u1eeb tr\u01b0\u1edbc v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u ph\u00e2n bi\u1ec7t 1, 2, 3. B\u00ecnh th\u01b0\u1eddng “\u0111\u0129a s\u1ed1 1” \u0111\u1eb7t d\u01b0\u1edbi “\u0111\u1ea7u thu, th\u00f4ng tin quang h\u1ecdc”.<\/p>\n\n\n\n
Khi ta ch\u1ecdn 1 th\u00ec b\u1ed9 vi x\u1eed l\u00ed l\u1eadp t\u1ee9c s\u1ebd ph\u00e1n \u0111o\u00e1n: “B\u1ea5t \u0111\u1ed9ng”. Khi ta ch\u1ecdn 2 th\u00ec b\u1ed9 vi x\u1eed l\u00ed kh\u1edfi \u0111\u1ed9ng ngay m\u00f4t\u01a1, quay 120o khi\u1ebfn \u0111\u0129a s\u1ed1 2 chuy\u1ec3n \u0111\u00fang v\u00e0o v\u1ecb tr\u00ed v\u1ed1n c\u1ee7a \u0111\u0129a 1. C\u0169ng nh\u01b0 v\u1eady, khi ta ch\u1ecdn 3 th\u00ec n\u00f3 s\u1ebd l\u1ec7nh cho m\u00f4t\u01a1 quay 240o, khi\u1ebfn \u0111\u0129a s\u1ed1 3 v\u00e0o v\u1ecb tr\u00ed c\u1ee7a \u0111\u0129a s\u1ed1 1. V\u1ecb tr\u00ed c\u1ee7a \u0111\u0129a quang \u0111\u00e3 di \u0111\u1ed9ng xong, li\u1ec1n c\u00f3 th\u1ec3 b\u01b0\u1edbc v\u00e0o tr\u1ea1ng th\u00e1i ph\u00e1t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
V\u1eady th\u00ec, d\u00e0n \u00e2m h\u01b0\u1edfng \u0111\u00e3 t\u1ef1 \u0111\u1ed9ng t\u00ecm ch\u01b0\u01a1ng tr\u00ecnh tr\u00ean m\u1ed9t \u0111\u0129a quang nh\u01b0 th\u1ebf n\u00e0o? \u1ede \u0111\u00e2y, ch\u00fang ta h\u00e3y t\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c ghi l\u00ean \u0111\u0129a quang c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh \u00e2m nh\u1ea1c \u0111\u00e3. Th\u00f4ng th\u01b0\u1eddng tr\u00ean \u0111\u0129a quang m\u1ed7i m\u1ed9t ti\u1ebft m\u1ee5c chi\u1ebfm ba khu: khu d\u1eabn v\u00e0o, khu ti\u1ebft m\u1ee5c v\u00e0 khu \u0111\u01b0a ra. Khu d\u1eabn v\u00e0o v\u00e0 khu \u0111\u01b0a ra th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh b\u1edfi nhi\u1ec1u cung (sect\u01a1) tr\u1ed1ng. B\u1ed1 tr\u00ed khu d\u1eabn v\u00e0o v\u00e0 khu \u0111\u01b0a ra l\u00e0 \u0111\u1ec3 ti\u1ec7n cho vi\u1ec7c ph\u00e2n bi\u1ec7t v\u00e0 nh\u1eadn bi\u1ebft khu ti\u1ebft m\u1ee5c. N\u1ebfu tr\u00ean \u0111\u0129a quang c\u00f3 10 ti\u1ebft m\u1ee5c \u00e2m nh\u1ea1c th\u00ec 10 khu ti\u1ebft m\u1ee5c n\u00e0y s\u1ebd b\u1ecb chia c\u1eaft ra b\u1edfi 9 cung tr\u1ed1ng. \u0110\u00f3 l\u00e0 c\u1ea3i t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c t\u1ef1 \u0111\u1ed9ng ch\u1ecdn t\u00ecm ti\u1ebft m\u1ee5c s\u1ed1 m\u1ea5y.<\/p>\n\n\n\n
B\u00e2y gi\u1edd ch\u00fang ta h\u00e3y th\u1eed xem qu\u00e1 tr\u00ecnh t\u1ef1 \u0111\u1ed9ng t\u00ecm ch\u1ecdn. Gi\u1ea3 th\u1eed ta ch\u1ecdn ti\u1ebft m\u1ee5c s\u1ed1 3 th\u00ec ta b\u1ea5m v\u00e0o ph\u00edm s\u1ed1 3 tr\u00ean b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c tr\u00ean m\u00e1y. L\u00fac \u0111\u00f3 “b\u1ed9 \u0111\u1ebfm” trong thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng l\u1eadp t\u1ee9c s\u1ebd ghi l\u1ea1i con s\u1ed1 n\u00e0y, b\u1ed9 vi x\u1eed l\u00ed l\u1eadp t\u1ee9c b\u1eaft \u0111\u1ea7u c\u00f4ng vi\u1ec7c t\u00ecm ki\u1ebfm: N\u00f3 kh\u1edfi \u0111\u1ed9ng \u0111\u0129a quang theo tu\u1ea7n t\u1ef1 \u0111\u1ec3 t\u00ecm khu d\u1eabn v\u00e0o tr\u1ed1ng. M\u1ed7i l\u1ea7n n\u00f3 g\u1eb7p m\u1ed9t khu d\u1eabn v\u00e0o th\u00ec m\u00e1y t\u00ednh tr\u1eeb \u0111i 1 v\u00e0 l\u1ea1i ph\u00e1n \u0111o\u00e1n b\u1ed9 \u0111\u1ebfm \u0111\u00e3 l\u00e0 0 ch\u01b0a. N\u1ebfu kh\u00f4ng ph\u1ea3i th\u00ec n\u00f3 ti\u1ebfp t\u1ee5c qu\u00e9t v\u00e0 t\u00ecm ti\u1ebfp. \u0110\u01b0\u01a1ng nhi\u00ean, khi t\u00ecm \u0111\u1ebfn khu d\u1eabn v\u00e0o th\u1ee9 3 th\u00ec b\u1ed9 \u0111\u1ebfm bi\u1ebfn th\u00e0nh 0, n\u00f3i r\u1eb1ng n\u00f3 \u0111\u00e3 t\u00ecm th\u1ea5y khu ti\u1ebft m\u1ee5c n\u00e0y r\u1ed3i. Sau \u0111\u00f3, n\u00f3 l\u1eadp t\u1ee9c kh\u1edfi \u0111\u1ed9ng h\u1ec7 th\u1ed1ng ph\u00e1t, m\u1edf thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng h\u1eefu quan v\u00e0 b\u1eaft \u0111\u1ea7u ph\u00e1t ti\u1ebft m\u1ee5c \u00e2m nh\u1ea1c n\u00e0y.<\/p>\n\n\n\n
N\u1ebfu ta ch\u1ecdn ti\u1ebft m\u1ee5c theo c\u00e1ch li\u00ean t\u1ee5c hay gi\u00e1n \u0111o\u1ea1n th\u00ec c\u00e1ch ch\u1ecdn t\u00ecm c\u0169ng t\u01b0\u01a1ng t\u1ef1. \u0110\u00f3 l\u00e0 v\u00ec trong b\u1ed9 vi x\u1eed l\u00ed \u0111\u00e3 so\u1ea1n s\u1eb5n ch\u01b0\u01a1ng tr\u00ecnh r\u1ea5t ch\u1eb7t ch\u1ebd, c\u00f3 th\u1ec3 \u1ee9ng ph\u00f3 c\u00e1c t\u00ecnh h\u00ecnh m\u1ed9t c\u00e1ch kh\u00e9o l\u00e9o.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a: \u00c2m h\u01b0\u1edfng; Khu d\u1eabn v\u00e0o; Khu \u0111\u01b0a ra.<\/p>\n","protected":false},"excerpt":{"rendered":"
C\u00f9ng v\u1edbi s\u1ef1 n\u00e2ng cao c\u1ee7a m\u1ee9c s\u1ed1ng v\u0103n h\u00f3a c\u1ee7a m\u1ecdi ng\u01b0\u1eddi, thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng (hi-fi set) c\u0169ng l\u1eb7ng l\u1ebd b\u01b0\u1edbc v\u00e0o h\u00e0ng v\u1ea1n gia \u0111\u00ecnh. Thi\u1ebft b\u1ecb \u00e2m h\u01b0\u1edfng thao t\u00e1c r\u1ea5t \u0111\u01a1n gi\u1ea3n. Ch\u1ec9 c\u1ea7n \u1ea5n nh\u1eb9 m\u1ea5y c\u00e1i l\u00ean b\u1ec1 m\u1eb7t ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u00e0 n\u00f3 s\u1ebd t\u1ef1 \u0111\u1ed9ng […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,13],"tags":[],"class_list":["post-10408","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tin-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=10408"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10408\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=10408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=10408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=10408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}