{"id":494039,"date":"2025-10-02T15:22:31","date_gmt":"2025-10-02T08:22:31","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=494039"},"modified":"2025-10-02T15:22:31","modified_gmt":"2025-10-02T08:22:31","slug":"compressor","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/compressor\/","title":{"rendered":"Compressor l\u00e0 g\u00ec? C\u00e1ch ch\u1ec9nh Compressor \u00e2m thanh “chu\u1ea9n b\u00e0i”"},"content":{"rendered":"

Compressor l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng nh\u1ea5t trong l\u0129nh v\u1ef1c thu \u00e2m v\u00e0 s\u1ea3n xu\u1ea5t \u00e2m nh\u1ea1c. Thi\u1ebft b\u1ecb n\u00e0y gi\u00fap c\u00e2n b\u1eb1ng \u00e2m l\u01b0\u1ee3ng, gi\u1eef cho b\u1ea3n thu tr\u1edf n\u00ean m\u01b0\u1ee3t m\u00e0, chuy\u00ean nghi\u1ec7p h\u01a1n. N\u1ebfu b\u1ea1n \u0111ang b\u0103n kho\u0103n b\u1ed9 l\u1ecdc \u00e2m thanh l\u00e0 g\u00ec, ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 \u1ee9ng d\u1ee5ng th\u1ebf n\u00e0o trong th\u1ef1c t\u1ebf, b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u1ea3i \u0111\u00e1p chi ti\u1ebft cho b\u1ea1n.<\/span><\/p>\n

Compressor l\u00e0 g\u00ec?<\/span><\/h2>\n

Compressor hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 l\u1ecdc \u00e2m thanh. \u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb x\u1eed l\u00fd t\u00edn hi\u1ec7u \u00e2m thanh \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong ph\u00f2ng thu v\u00e0 qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t nh\u1ea1c. Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 n\u00e9n d\u1ea3i \u0111\u1ed9ng, t\u1ee9c gi\u1ea3m kho\u1ea3ng c\u00e1ch ch\u00eanh l\u1ec7ch gi\u1eefa \u00e2m thanh nh\u1ecf nh\u1ea5t v\u00e0 l\u1edbn nh\u1ea5t trong b\u1ea3n thu.<\/span><\/p>\n

Trong th\u1ef1c t\u1ebf, khi thu gi\u1ecdng h\u00e1t hay nh\u1ea1c c\u1ee5, \u00e2m l\u01b0\u1ee3ng th\u01b0\u1eddng thay \u0111\u1ed5i th\u1ea5t th\u01b0\u1eddng theo t\u1eebng \u0111o\u1ea1n. B\u1ed9 l\u1ecdc \u00e2m thanh s\u1ebd can thi\u1ec7p \u0111\u1ec3 l\u00e0m gi\u1ea3m s\u1ef1 dao \u0111\u1ed9ng n\u00e0y, gi\u00fap b\u1ea3n thu \u1ed5n \u0111\u1ecbnh v\u00e0 d\u1ec5 nghe h\u01a1n.<\/span><\/p>\n

Thi\u1ebft b\u1ecb n\u00e0y t\u1ea1o ra m\u1ed9t m\u1ee9c \u00e2m l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng, gi\u1eef cho t\u00edn hi\u1ec7u lu\u00f4n trong v\u00f9ng nghe d\u1ec5 ch\u1ecbu, \u0111\u1ed3ng th\u1eddi gi\u00fap b\u1ea3n ph\u1ed1i tr\u1edf n\u00ean m\u01b0\u1ee3t m\u00e0 v\u00e0 chuy\u00ean nghi\u1ec7p h\u01a1n. Ngo\u00e0i ra,\u00a0 b\u1ed9 l\u1ecdc \u00e2m thanh c\u00f2n th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng trong kh\u00e2u mix nh\u1ea1c, gi\u00fap ki\u1ec3m so\u00e1t nh\u1ea1c c\u1ee5, gi\u1ecdng h\u00e1t ho\u1eb7c t\u00e1ch b\u1edbt t\u1ea1p \u00e2m m\u00e0 kh\u00f4ng l\u00e0m thay \u0111\u1ed5i ch\u1ea5t \u00e2m g\u1ed1c.<\/span><\/p>\n

\"compressor-1\"<\/picture><\/p>\n

Vai tr\u00f2 c\u1ee7a Compressor trong h\u1ec7 th\u1ed1ng \u00e2m thanh<\/span><\/h2>\n

B\u1ed9 l\u1ecdc \u00e2m thanh ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e9n d\u1ea3i \u0111\u1ed9ng: khi \u00e2m thanh v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng \u0111\u00e3 c\u00e0i \u0111\u1eb7t, thi\u1ebft b\u1ecb s\u1ebd t\u1ef1 \u0111\u1ed9ng h\u1ea1 m\u1ee9c \u00e2m l\u01b0\u1ee3ng xu\u1ed1ng, trong khi nh\u1eefng \u0111o\u1ea1n t\u00edn hi\u1ec7u nh\u1ecf h\u01a1n ng\u01b0\u1ee1ng v\u1eabn \u0111\u01b0\u1ee3c gi\u1eef nguy\u00ean. Nh\u1edd v\u1eady, \u00e2m thanh tr\u1edf n\u00ean c\u00e2n \u0111\u1ed1i h\u01a1n v\u00e0 tr\u00e1nh t\u00ecnh tr\u1ea1ng qu\u00e1 to ho\u1eb7c qu\u00e1 nh\u1ecf g\u00e2y kh\u00f3 ch\u1ecbu cho ng\u01b0\u1eddi nghe.<\/span><\/p>\n

Trong h\u1ec7 th\u1ed1ng \u00e2m thanh, b\u1ed9 l\u1ecdc n\u00e0y gi\u00fap gi\u1eef cho gi\u1ecdng h\u00e1t v\u00e0 nh\u1ea1c c\u1ee5 c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, l\u00e0m cho t\u1ed5ng th\u1ec3 b\u1ea3n ph\u1ed1i m\u01b0\u1ee3t m\u00e0, d\u1ec5 nghe h\u01a1n. \u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 h\u1eefu \u00edch \u0111\u1ec3 gi\u1ea3m s\u1ef1 dao \u0111\u1ed9ng th\u1ea5t th\u01b0\u1eddng v\u1ec1 \u00e2m l\u01b0\u1ee3ng, \u0111\u1eb7c bi\u1ec7t trong nh\u1eefng b\u1ea3n thu c\u00f3 nhi\u1ec1u l\u1edbp nh\u1ea1c c\u1ee5 v\u00e0 hi\u1ec7u \u1ee9ng.<\/span><\/p>\n

Kh\u00f4ng ch\u1ec9 v\u1eady, b\u1ed9 l\u1ecdc \u00e2m thanh c\u00f2n h\u1ed7 tr\u1ee3 l\u00e0m gi\u1ea3m ti\u1ebfng \u1ed3n kh\u00f4ng mong mu\u1ed1n, \u0111\u1ed3ng th\u1eddi t\u1ea1o ra m\u1ed9t s\u1ed1 hi\u1ec7u \u1ee9ng \u0111\u1eb7c bi\u1ec7t gi\u00fap \u00e2m nh\u1ea1c gi\u00e0u c\u1ea3m x\u00fac h\u01a1n. Thi\u1ebft b\u1ecb n\u00e0y c\u0169ng \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 ki\u1ec3m so\u00e1t t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng tinh ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng theo mong mu\u1ed1n.<\/span><\/p>\n

\"compressor-2\"<\/picture><\/p>\n

C\u00e1c th\u00f4ng s\u1ed1 c\u1ea7n quan t\u00e2m khi \u0111i\u1ec1u ch\u1ec9nh Compressor<\/span><\/h2>\n

Khi l\u00e0m vi\u1ec7c v\u1edbi b\u1ed9 l\u1ecdc \u00e2m thanh, b\u1ea1n kh\u00f4ng ch\u1ec9 b\u1eadt v\u00e0 d\u00f9ng ngay m\u00e0 c\u1ea7n n\u1eafm r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u00e2m thanh mong mu\u1ed1n. M\u1ed7i th\u00f4ng s\u1ed1 \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1ch t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c n\u00e9n, t\u1eeb \u0111\u1ed9 t\u1ef1 nhi\u00ean, s\u1ef1 c\u00e2n b\u1eb1ng cho \u0111\u1ebfn c\u1ea3m gi\u00e1c tho\u1ea3i m\u00e1i khi nghe:<\/span><\/p>\n

Ratio<\/span><\/h3>\n

T\u1ef7 l\u1ec7 n\u00e9n cho bi\u1ebft m\u1ee9c \u0111\u1ed9 m\u1ea1nh m\u1ebd c\u1ee7a b\u1ed9 l\u1ecdc \u00e2m thanh khi x\u1eed l\u00fd t\u00edn hi\u1ec7u v\u01b0\u1ee3t ng\u01b0\u1ee1ng. V\u00ed d\u1ee5, v\u1edbi t\u1ec9 l\u1ec7 4:1, n\u1ebfu t\u00edn hi\u1ec7u v\u01b0\u1ee3t ng\u01b0\u1ee1ng 4 dB th\u00ec ch\u1ec9 c\u00f2n 1 dB \u0111\u01b0\u1ee3c ph\u00e1t ra. T\u1ef7 l\u1ec7 c\u00e0ng cao th\u00ec \u00e2m thanh c\u00e0ng b\u1ecb \u00e9p ch\u1eb7t, trong khi t\u1ef7 l\u1ec7 th\u1ea5p s\u1ebd gi\u1eef \u0111\u01b0\u1ee3c s\u1ef1 t\u1ef1 nhi\u00ean h\u01a1n.<\/span><\/p>\n

Release<\/span><\/h3>\n

Release l\u00e0 th\u1eddi gian \u0111\u1ec3 b\u1ed9 l\u1ecdc \u00e2m thanh d\u1eebng n\u00e9n sau khi t\u00edn hi\u1ec7u tr\u1edf v\u1ec1 m\u1ee9c b\u00ecnh th\u01b0\u1eddng. Gi\u00e1 tr\u1ecb n\u00e0y th\u01b0\u1eddng t\u1eeb 1 \u2013 5000 ms. N\u1ebfu qu\u00e1 nhanh, \u00e2m thanh nghe s\u1ebd g\u01b0\u1ee3ng g\u1ea1o, c\u00f2n qu\u00e1 ch\u1eadm c\u00f3 th\u1ec3 khi\u1ebfn b\u1ea3n thu b\u1ecb thi\u1ebfu \u0111\u1ed9 tho\u00e1ng.<\/span><\/p>\n

\"compressor-3\"<\/picture><\/p>\n

Noise Gate<\/span><\/h3>\n

Noise Gate \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ed9 l\u1ecdc, lo\u1ea1i b\u1ecf c\u00e1c t\u00edn hi\u1ec7u nh\u1ecf d\u01b0\u1edbi m\u1ee9c thi\u1ebft l\u1eadp. \u0110\u00e2y l\u00e0 c\u00e1ch h\u1eefu hi\u1ec7u \u0111\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n n\u1ec1n, nh\u01b0ng n\u1ebfu c\u00e0i \u0111\u1eb7t kh\u00f4ng chu\u1ea9n s\u1ebd v\u00f4 t\u00ecnh lo\u1ea1i b\u1ecf lu\u00f4n nh\u1eefng chi ti\u1ebft nh\u1ecf nh\u01b0ng quan tr\u1ecdng trong b\u1ea3n thu.<\/span><\/p>\n

Peak<\/span><\/h3>\n

Peak cho bi\u1ebft m\u1ee9c t\u00edn hi\u1ec7u \u0111\u1ec9nh m\u00e0 compressor x\u1eed l\u00fd. \u0110\u00e2y l\u00e0 gi\u1edbi h\u1ea1n quan tr\u1ecdng \u0111\u1ec3 ng\u0103n t\u00ecnh tr\u1ea1ng \u00e2m thanh v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng cho ph\u00e9p, tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng m\u00e9o ti\u1ebfng ho\u1eb7c g\u00e2y h\u1ecfng thi\u1ebft b\u1ecb ph\u00e1t.<\/span><\/p>\n

Attack<\/span><\/h3>\n

Attack l\u00e0 kho\u1ea3ng th\u1eddi gian b\u1ed9 l\u1ecdc \u00e2m thanh b\u1eaft \u0111\u1ea7u ph\u1ea3n \u1ee9ng khi t\u00edn hi\u1ec7u v\u01b0\u1ee3t ng\u01b0\u1ee1ng. Th\u00f4ng s\u1ed1 n\u00e0y t\u00ednh b\u1eb1ng mili gi\u00e2y (ms) v\u00e0 th\u01b0\u1eddng \u0111i\u1ec1u ch\u1ec9nh trong kho\u1ea3ng 1 \u2013 500 ms. N\u1ebfu Attack nhanh, b\u1ed9 l\u1ecdc \u00e2m thanh s\u1ebd b\u1eaft ngay c\u00e1c \u0111\u1ec9nh t\u00edn hi\u1ec7u, c\u00f2n Attack ch\u1eadm s\u1ebd gi\u1eef l\u1ea1i s\u1ef1 t\u1ef1 nhi\u00ean c\u1ee7a \u00e2m thanh.<\/span><\/p>\n

\"compressor-4\"<\/picture><\/p>\n

Bypass<\/span><\/h3>\n

Bypass cho ph\u00e9p t\u00edn hi\u1ec7u \u0111i qua m\u00e0 kh\u00f4ng b\u1ecb n\u00e9n. Ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng s\u1eed d\u1ee5ng ch\u1ebf \u0111\u1ed9 n\u00e0y \u0111\u1ec3 so s\u00e1nh s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u00e2m thanh g\u1ed1c v\u00e0 \u00e2m thanh sau khi \u0111\u01b0\u1ee3c b\u1ed9 l\u1ecdc \u00e2m thanh x\u1eed l\u00fd, t\u1eeb \u0111\u00f3 t\u00ecm ra thi\u1ebft l\u1eadp t\u1ed1i \u01b0u nh\u1ea5t.<\/span><\/p>\n

Saturation<\/span><\/h3>\n

Saturation l\u00e0 \u0111i\u1ec3m b\u00e3o h\u00f2a c\u1ee7a t\u00edn hi\u1ec7u \u2013 n\u01a1i m\u00e0 \u00e2m l\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 t\u0103ng th\u00eam. \u0110i\u1ec1u ch\u1ec9nh \u0111\u00fang m\u1ee9c saturation gi\u00fap t\u00edn hi\u1ec7u an to\u00e0n h\u01a1n v\u00e0 tr\u00e1nh t\u00ecnh tr\u1ea1ng b\u1ecb n\u00e9n qu\u00e1 m\u1ee9c l\u00e0m m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh.<\/span><\/p>\n

Threshold<\/span><\/h3>\n

Threshold l\u00e0 ng\u01b0\u1ee1ng x\u00e1c \u0111\u1ecbnh khi n\u00e0o compressor b\u1eaft \u0111\u1ea7u ho\u1ea1t \u0111\u1ed9ng. N\u1ebfu t\u00edn hi\u1ec7u v\u01b0\u1ee3t ng\u01b0\u1ee1ng n\u00e0y, b\u1ed9 l\u1ecdc \u00e2m thanh s\u1ebd n\u00e9n l\u1ea1i theo t\u1ef7 l\u1ec7 \u0111\u00e3 thi\u1ebft l\u1eadp. \u0110\u00e2y l\u00e0 th\u00f4ng s\u1ed1 quy\u1ebft \u0111\u1ecbnh to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh n\u00e9n c\u00f3 di\u1ec5n ra hay kh\u00f4ng.<\/span><\/p>\n

Input\/Output Gain<\/span><\/h3>\n

Input\/Output Gain cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng v\u00e0o v\u00e0 ra c\u1ee7a b\u1ed9 l\u1ecdc \u00e2m thanh. Ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng b\u1eadt Bypass \u0111\u1ec3 so s\u00e1nh nh\u1eb1m gi\u1eef cho \u00e2m l\u01b0\u1ee3ng \u0111\u1ea7u ra c\u00e2n b\u1eb1ng v\u1edbi \u00e2m l\u01b0\u1ee3ng g\u1ed1c, \u0111\u1ea3m b\u1ea3o b\u1ea3n thu kh\u00f4ng b\u1ecb nh\u1ecf \u0111i ho\u1eb7c qu\u00e1 l\u1edbn sau khi x\u1eed l\u00fd.<\/span><\/p>\n

C\u00e1ch ch\u1ec9nh Compressor chu\u1ea9n cho ng\u01b0\u1eddi m\u1edbi<\/span><\/h2>\n

B\u1ed9 l\u1ecdc \u00e2m thanh l\u00e0 thi\u1ebft b\u1ecb x\u1eed l\u00fd t\u00edn hi\u1ec7u \u00e2m thanh, gi\u00fap thu h\u1eb9p kho\u1ea3ng c\u00e1ch gi\u1eefa nh\u1eefng \u0111o\u1ea1n nh\u1ecf v\u00e0 l\u1edbn, t\u1ea1o n\u00ean s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 d\u1ec5 ch\u1ecbu khi nghe. V\u1edbi ng\u01b0\u1eddi m\u1edbi, vi\u1ec7c ch\u1ec9nh b\u1ed9 l\u1ecdc \u00e2m thanh c\u00f3 th\u1ec3 g\u00e2y b\u1ed1i r\u1ed1i, nh\u01b0ng n\u1ebfu b\u1ea1n l\u00e0m theo t\u1eebng b\u01b0\u1edbc d\u01b0\u1edbi \u0111\u00e2y th\u00ec s\u1ebd th\u1ea5y kh\u00e1 d\u1ec5 d\u00e0ng.<\/span><\/p>\n

B\u01b0\u1edbc 1: Kh\u1edfi \u0111\u1ed9ng v\u1edbi thi\u1ebft l\u1eadp m\u1eb7c \u0111\u1ecbnh<\/span><\/h3>\n

\u0110\u1eb7t t\u1ea5t c\u1ea3 c\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a b\u1ed9 l\u1ecdc \u00e2m thanh v\u1ec1 m\u1ee9c trung b\u00ecnh ho\u1eb7c ch\u1ebf \u0111\u1ed9 m\u1eb7c \u0111\u1ecbnh. \u0110\u00e2y l\u00e0 c\u00e1ch an to\u00e0n nh\u1ea5t \u0111\u1ec3 b\u1ea1n b\u1eaft \u0111\u1ea7u m\u00e0 kh\u00f4ng l\u00e0m bi\u1ebfn d\u1ea1ng \u00e2m thanh.<\/span><\/p>\n

\"compressor-5\"<\/picture><\/p>\n

B\u01b0\u1edbc 2: C\u00e0i \u0111\u1eb7t ng\u01b0\u1ee1ng (Threshold)<\/span><\/h3>\n

H\u00e3y \u0111\u1ec3 ng\u01b0\u1ee1ng ban \u0111\u1ea7u \u1edf m\u1ee9c cao (v\u00ed d\u1ee5 0dB), sau \u0111\u00f3 h\u1ea1 d\u1ea7n xu\u1ed1ng. Khi th\u1ea5y \u0111\u00e8n b\u00e1o Gain Reduction ho\u1ea1t \u0111\u1ed9ng, ngh\u0129a l\u00e0 b\u1ed9 l\u1ecdc \u00e2m thanh \u0111\u00e3 b\u1eaft \u0111\u1ea7u x\u1eed l\u00fd c\u00e1c \u0111\u1ec9nh \u00e2m thanh v\u01b0\u1ee3t ng\u01b0\u1ee1ng.<\/span><\/p>\n

\"compressor-6\"<\/picture><\/p>\n

B\u01b0\u1edbc 3: \u0110i\u1ec1u ch\u1ec9nh t\u1ef7 l\u1ec7 n\u00e9n (Ratio)<\/span><\/h3>\n

Kh\u1edfi \u0111\u1ed9ng nh\u1eb9 nh\u00e0ng v\u1edbi t\u1ef7 l\u1ec7 2:1 ho\u1eb7c 3:1 \u0111\u1ec3 d\u1ec5 ki\u1ec3m so\u00e1t. Trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n mu\u1ed1n gi\u1ea3m m\u1ea1nh s\u1ef1 ch\u00eanh l\u1ec7ch, c\u00f3 th\u1ec3 t\u0103ng d\u1ea7n, nh\u01b0ng tr\u00e1nh ch\u1ecdn t\u1ef7 l\u1ec7 qu\u00e1 l\u1edbn \u0111\u1ec3 \u00e2m thanh kh\u00f4ng b\u1ecb g\u00f2 b\u00f3.<\/span><\/p>\n

\"compressor-7\"<\/picture><\/p>\n

B\u01b0\u1edbc 4: Tinh ch\u1ec9nh Attack v\u00e0 Release<\/span><\/h3>\n