{"id":491236,"date":"2025-09-19T09:46:47","date_gmt":"2025-09-19T02:46:47","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=491236"},"modified":"2025-09-19T09:46:47","modified_gmt":"2025-09-19T02:46:47","slug":"anc-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/anc-la-gi\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng ANC tr\u00ean tai nghe g\u00ec? C\u00f3 c\u1ea7n thi\u1ebft kh\u00f4ng?"},"content":{"rendered":"

ANC l\u00e0 g\u00ec?<\/b> \u0110\u00e2y c\u00f3 th\u1ec3 l\u00e0 th\u1eafc m\u1eafc \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n khi nghe \u0111\u1ebfn c\u1ee5m t\u1eeb \u201cc\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng\u201d tr\u00ean c\u00e1c m\u1eabu tai nghe hi\u1ec7n \u0111\u1ea1i. Kh\u00f4ng \u0111\u01a1n thu\u1ea7n ch\u1ec9 l\u00e0 m\u1ed9t t\u00ednh n\u0103ng ph\u1ee5, ANC \u0111ang d\u1ea7n tr\u1edf th\u00e0nh m\u1ed9t ti\u00eau chu\u1ea9n m\u1edbi trong tr\u1ea3i nghi\u1ec7m \u00e2m thanh c\u00e1 nh\u00e2n.B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 c\u00e1ch ANC ho\u1ea1t \u0111\u1ed9ng, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 li\u1ec7u n\u00f3 c\u00f3 x\u1ee9ng \u0111\u00e1ng tr\u1edf th\u00e0nh y\u1ebfu t\u1ed1 b\u1ea1n n\u00ean c\u00e2n nh\u1eafc khi ch\u1ecdn mua tai nghe hay kh\u00f4ng.<\/span><\/p>\n

Hi\u1ec3u v\u1ec1 c\u01a1 ch\u1ebf ch\u1ed1ng \u1ed3n tr\u00ean tai nghe<\/b><\/h2>\n

\u0110\u1ec3 hi\u1ec3u r\u00f5 gi\u00e1 tr\u1ecb c\u1ee7a c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng, tr\u01b0\u1edbc h\u1ebft c\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c c\u00e1ch tai nghe lo\u1ea1i b\u1ecf ti\u1ebfng \u1ed3n nh\u01b0 th\u1ebf n\u00e0o. Tr\u00ean th\u1ef1c t\u1ebf, tai nghe hi\u1ec7n nay th\u01b0\u1eddng s\u1eed d\u1ee5ng hai c\u01a1 ch\u1ebf ch\u00ednh: ch\u1ed1ng \u1ed3n th\u1ee5 \u0111\u1ed9ng v\u00e0 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng. M\u1ed7i ph\u01b0\u01a1ng ph\u00e1p c\u00f3 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng ri\u00eang, mang l\u1ea1i hi\u1ec7u qu\u1ea3 kh\u00e1c nhau t\u00f9y theo m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng.<\/span><\/p>\n

V\u00ec sao tai nghe c\u1ea7n c\u00f3 c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n?<\/b><\/h3>\n

ANC l\u00e0 g\u00ec?<\/b> Trong nh\u1ecbp s\u1ed1ng hi\u1ec7n \u0111\u1ea1i, con ng\u01b0\u1eddi ng\u00e0y c\u00e0ng c\u00f3 xu h\u01b0\u1edbng s\u1eed d\u1ee5ng tai nghe nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n thi\u1ebft y\u1ebfu \u0111\u1ec3 nghe nh\u1ea1c, xem phim, h\u1ecdc ngo\u1ea1i ng\u1eef hay tham gia c\u00e1c cu\u1ed9c g\u1ecdi tr\u1ef1c tuy\u1ebfn. Tuy nhi\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng tai nghe trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec1u ti\u1ebfng \u0111\u1ed9ng l\u1ea1i g\u00e2y kh\u00f4ng \u00edt phi\u1ec1n to\u00e1i. \u00c2m thanh t\u1eeb xe c\u1ed9, ti\u1ebfng ng\u01b0\u1eddi tr\u00f2 chuy\u1ec7n, ti\u1ebfng m\u00e1y m\u00f3c… th\u01b0\u1eddng xuy\u00ean len l\u1ecfi v\u00e0 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m nghe, khi\u1ebfn \u00e2m thanh b\u1ecb lo\u00e3ng, m\u1ea5t chi ti\u1ebft ho\u1eb7c kh\u00f3 t\u1eadp trung. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 gi\u1ea3i tr\u00ed hay l\u00e0m vi\u1ec7c m\u00e0 c\u00f2n khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng c\u1ea3m th\u1ea5y m\u1ec7t m\u1ecfi khi ph\u1ea3i t\u0103ng \u00e2m l\u01b0\u1ee3ng \u0111\u1ec3 nghe r\u00f5 h\u01a1n.<\/span><\/p>\n

\"anc-1\"<\/p>\n

Ch\u00ednh t\u1eeb nhu c\u1ea7u th\u1ef1c t\u1ebf \u0111\u00f3, c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p h\u1eefu hi\u1ec7u nh\u1eb1m c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh v\u00e0 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng c\u00e1ch ly ti\u1ebfng \u1ed3n. C\u00e1c d\u00f2ng tai nghe t\u00edch h\u1ee3p t\u00ednh n\u0103ng n\u00e0y c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng nh\u1eadn di\u1ec7n, x\u1eed l\u00fd v\u00e0 lo\u1ea1i b\u1ecf t\u1ea1p \u00e2m tr\u01b0\u1edbc khi ch\u00fang k\u1ecbp t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn tai ng\u01b0\u1eddi nghe. C\u00f4ng ngh\u1ec7 n\u00e0y ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang l\u1ea1i hi\u1ec7u qu\u1ea3 r\u00f5 r\u1ec7t h\u01a1n trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng kh\u00e1c nhau.<\/span><\/p>\n

Nh\u1edd v\u1eady, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1eadn h\u01b0\u1edfng \u00e2m thanh m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng, ch\u00e2n th\u1ef1c v\u00e0 tho\u1ea3i m\u00e1i h\u01a1n trong nhi\u1ec1u ho\u00e0n c\u1ea3nh \u2013 t\u1eeb th\u01b0 vi\u1ec7n y\u00ean t\u0129nh cho \u0111\u1ebfn ga t\u00e0u nh\u1ed9n nh\u1ecbp. C\u00f3 th\u1ec3 n\u00f3i, c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n kh\u00f4ng ch\u1ec9 n\u00e2ng t\u1ea7m tr\u1ea3i nghi\u1ec7m nghe m\u00e0 c\u00f2n g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 th\u00ednh gi\u00e1c v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c, h\u1ecdc t\u1eadp trong m\u00f4i tr\u01b0\u1eddng hi\u1ec7n \u0111\u1ea1i ng\u00e0y nay.<\/span><\/p>\n

Ph\u00e2n bi\u1ec7t ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng v\u00e0 b\u1ecb \u0111\u1ed9ng<\/b><\/h3>\n

C\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n tr\u00ean tai nghe hi\u1ec7n \u0111\u1ea1i \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh hai d\u1ea1ng ch\u00ednh: ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng (Active Noise Cancelling \u2013 <\/span>ANC l\u00e0 g\u00ec<\/b>) v\u00e0 ch\u1ed1ng \u1ed3n b\u1ecb \u0111\u1ed9ng (Passive Noise Cancelling \u2013 PNC l\u00e0 g\u00ec). M\u1eb7c d\u00f9 \u0111\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn m\u1ee5c ti\u00eau gi\u1ea3m thi\u1ec3u ti\u1ebfng \u1ed3n t\u1eeb m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i, nh\u01b0ng c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng v\u00e0 m\u1ee9c \u0111\u1ed9 hi\u1ec7u qu\u1ea3 c\u1ee7a hai ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/span><\/p>\n

\"anc-2\"<\/p>\n

Ch\u1ed1ng \u1ed3n b\u1ecb \u0111\u1ed9ng ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o thi\u1ebft k\u1ebf v\u1eadt l\u00fd c\u1ee7a tai nghe \u0111\u1ec3 ng\u0103n c\u1ea3n \u00e2m thanh b\u00ean ngo\u00e0i l\u1ecdt v\u00e0o tai. Nh\u1eefng v\u1eadt li\u1ec7u nh\u01b0 m\u00fat \u0111\u1ec7m d\u00e0y, l\u1edbp c\u00e1ch \u00e2m ho\u1eb7c ki\u1ec3u d\u00e1ng \u00f4m s\u00e1t tai s\u1ebd gi\u00fap h\u1ea1n ch\u1ebf ph\u1ea7n n\u00e0o ti\u1ebfng \u0111\u1ed9ng xung quanh. PNC ho\u1ea1t \u0111\u1ed9ng \u0111\u01a1n gi\u1ea3n, kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n hay chip x\u1eed l\u00fd, v\u00e0 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n tr\u00ean c\u00e1c tai nghe d\u1ea1ng ch\u1ee5p tai ho\u1eb7c in-ear c\u00f3 thi\u1ebft k\u1ebf k\u00edn. Tuy nhi\u00ean, kh\u1ea3 n\u0103ng ng\u0103n ti\u1ebfng \u1ed3n c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ch\u1ec9 th\u1ef1c s\u1ef1 hi\u1ec7u qu\u1ea3 v\u1edbi c\u00e1c \u00e2m thanh t\u1ea7n s\u1ed1 cao nh\u01b0 ti\u1ebfng n\u00f3i chuy\u1ec7n hay ti\u1ebfng g\u00f5 b\u00e0n ph\u00edm.<\/span><\/p>\n

Ng\u01b0\u1ee3c l\u1ea1i, c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng s\u1eed d\u1ee5ng micro t\u00edch h\u1ee3p \u0111\u1ec3 ghi nh\u1eadn ti\u1ebfng \u1ed3n b\u00ean ngo\u00e0i, sau \u0111\u00f3 t\u1ea1o ra s\u00f3ng \u00e2m ng\u01b0\u1ee3c pha nh\u1eb1m tri\u1ec7t ti\u00eau nh\u1eefng t\u1ea1p \u00e2m \u0111\u00f3 tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn tai ng\u01b0\u1eddi d\u00f9ng. Nh\u1edd v\u1eady, ANC \u0111\u1eb7c bi\u1ec7t hi\u1ec7u qu\u1ea3 v\u1edbi c\u00e1c \u00e2m thanh t\u1ea7n s\u1ed1 th\u1ea5p nh\u01b0 ti\u1ebfng \u0111\u1ed9ng c\u01a1, m\u00e1y l\u1ea1nh hay ti\u1ebfng xe c\u1ed9 \u2013 nh\u1eefng lo\u1ea1i \u00e2m m\u00e0 PNC kh\u00f3 x\u1eed l\u00fd.<\/span><\/p>\n

T\u00ecm hi\u1ec3u c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng ANC<\/b><\/h2>\n

C\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng \u0111ang ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c d\u00f2ng tai nghe hi\u1ec7n \u0111\u1ea1i<\/strong><\/a> nh\u1edd kh\u1ea3 n\u0103ng lo\u1ea1i b\u1ecf t\u1ea1p \u00e2m hi\u1ec7u qu\u1ea3. Thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o thi\u1ebft k\u1ebf c\u00e1ch \u00e2m, ANC s\u1eed d\u1ee5ng micro v\u00e0 s\u00f3ng \u00e2m \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 tri\u1ec7t ti\u00eau ti\u1ebfng \u1ed3n b\u00ean ngo\u00e0i. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u1eadn h\u01b0\u1edfng \u00e2m thanh r\u00f5 r\u00e0ng, ch\u00e2n th\u1ef1c h\u01a1n trong m\u00f4i tr\u01b0\u1eddng \u1ed3n \u00e0o.<\/span><\/p>\n

ANC l\u00e0 g\u00ec?<\/b><\/h3>\n

Ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng (Active Noise Cancelling) l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 \u00e2m thanh ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p tr\u00ean nhi\u1ec1u m\u1eabu tai nghe hi\u1ec7n \u0111\u1ea1i nh\u1eb1m mang l\u1ea1i tr\u1ea3i nghi\u1ec7m nghe v\u01b0\u1ee3t tr\u1ed9i. Kh\u00f4ng gi\u1ed1ng nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p c\u00e1ch \u00e2m th\u1ee5 \u0111\u1ed9ng ch\u1ec9 d\u1ef1a v\u00e0o thi\u1ebft k\u1ebf v\u00e0 v\u1eadt li\u1ec7u \u0111\u1ec3 ng\u0103n ti\u1ebfng \u1ed3n, ANC ho\u1ea1t \u0111\u1ed9ng theo c\u01a1 ch\u1ebf \u0111i\u1ec7n t\u1eed \u2013 s\u1eed d\u1ee5ng micro \u0111\u1ec3 thu \u00e2m thanh t\u1eeb m\u00f4i tr\u01b0\u1eddng xung quanh, sau \u0111\u00f3 t\u1ea1o ra s\u00f3ng \u00e2m ng\u01b0\u1ee3c pha \u0111\u1ec3 tri\u1ec7t ti\u00eau c\u00e1c t\u1ea1p \u00e2m \u0111\u00f3 tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn tai ng\u01b0\u1eddi d\u00f9ng.<\/span><\/p>\n

\"anc-3\"<\/p>\n

Qu\u00e1 tr\u00ecnh x\u1eed l\u00fd n\u00e0y di\u1ec5n ra g\u1ea7n nh\u01b0 t\u1ee9c th\u00ec nh\u1edd v\u00e0o b\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1 (DSP), cho ph\u00e9p tai nghe lo\u1ea1i b\u1ecf hi\u1ec7u qu\u1ea3 nh\u1eefng \u00e2m thanh t\u1ea7n s\u1ed1 th\u1ea5p nh\u01b0 ti\u1ebfng xe c\u1ed9, \u0111\u1ed9ng c\u01a1, qu\u1ea1t gi\u00f3 hay ti\u1ebfng \u1ed3n trong khoang m\u00e1y bay. Nh\u1edd v\u1eady, ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 nghe nh\u1ea1c, xem phim, h\u1ecdc t\u1eadp ho\u1eb7c l\u00e0m vi\u1ec7c trong kh\u00f4ng gian t\u0129nh l\u1eb7ng h\u01a1n, ngay c\u1ea3 khi \u0111ang \u1edf n\u01a1i c\u00f4ng c\u1ed9ng ho\u1eb7c nh\u1eefng khu v\u1ef1c nhi\u1ec1u ti\u1ebfng \u0111\u1ed9ng.<\/span><\/p>\n

C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng<\/b><\/h3>\n

C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng <\/span>ANC l\u00e0 g\u00ec<\/b>? Th\u1ef1c t\u1ebf c\u00f4ng ngh\u1ec7 n\u00e0y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd tri\u1ec7t ti\u00eau s\u00f3ng \u00e2m b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t t\u00edn hi\u1ec7u \u00e2m thanh ng\u01b0\u1ee3c pha v\u1edbi ti\u1ebfng \u1ed3n xung quanh. B\u00ean trong m\u1ed7i tai nghe t\u00edch h\u1ee3p ANC \u0111\u1ec1u c\u00f3 c\u00e1c micro thu \u00e2m nh\u1ecf, th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf b\u00ean ngo\u00e0i ho\u1eb7c b\u00ean trong housing. Nh\u1eefng micro n\u00e0y c\u00f3 nhi\u1ec7m v\u1ee5 ghi nh\u1eadn ti\u1ebfng \u0111\u1ed9ng t\u1eeb m\u00f4i tr\u01b0\u1eddng \u2013 nh\u01b0 ti\u1ebfng xe ch\u1ea1y, ti\u1ebfng \u0111i\u1ec1u h\u00f2a, ti\u1ebfng \u1ed3n giao th\u00f4ng \u2013 v\u00e0 g\u1eedi d\u1eef li\u1ec7u \u0111\u00f3 \u0111\u1ebfn b\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1 (DSP).<\/span><\/p>\n

\"anc-4\"<\/p>\n

B\u1ed9 x\u1eed l\u00fd sau \u0111\u00f3 s\u1ebd ph\u00e2n t\u00edch \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a \u00e2m thanh b\u00ean ngo\u00e0i v\u00e0 ngay l\u1eadp t\u1ee9c t\u1ea1o ra m\u1ed9t s\u00f3ng \u00e2m c\u00f3 pha \u0111\u1ea3o ng\u01b0\u1ee3c, c\u00f2n g\u1ecdi l\u00e0 \u201cs\u00f3ng kh\u1eed nhi\u1ec5u\u201d. Khi hai s\u00f3ng \u00e2m n\u00e0y g\u1eb7p nhau \u2013 m\u1ed9t t\u1eeb m\u00f4i tr\u01b0\u1eddng v\u00e0 m\u1ed9t t\u1eeb h\u1ec7 th\u1ed1ng ANC \u2013 ch\u00fang tri\u1ec7t ti\u00eau l\u1eabn nhau, khi\u1ebfn tai ng\u01b0\u1eddi g\u1ea7n nh\u01b0 kh\u00f4ng nghe th\u1ea5y ti\u1ebfng \u1ed3n g\u1ed1c. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra li\u00ean t\u1ee5c v\u00e0 t\u1ef1 \u0111\u1ed9ng trong th\u1eddi gian th\u1ef1c, \u0111\u1ea3m b\u1ea3o vi\u1ec7c kh\u1eed ti\u1ebfng \u1ed3n lu\u00f4n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt, th\u00edch \u1ee9ng v\u1edbi m\u1ecdi ho\u00e0n c\u1ea3nh.<\/span><\/p>\n

L\u1ee3i \u00edch khi tai nghe c\u00f3 ANC<\/b><\/h3>\n

Tai nghe t\u00edch h\u1ee3p c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch thi\u1ebft th\u1ef1c, \u0111\u1eb7c bi\u1ec7t trong b\u1ed1i c\u1ea3nh cu\u1ed9c s\u1ed1ng ng\u00e0y c\u00e0ng b\u1eadn r\u1ed9n v\u00e0 \u1ed3n \u00e0o. Kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 c\u00f4ng c\u1ee5 \u0111\u1ec3 th\u01b0\u1edfng th\u1ee9c \u00e2m nh\u1ea1c, tai nghe ANC c\u00f2n \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t \u201cl\u00e1 ch\u1eafn \u00e2m thanh\u201d, gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u00e1ch bi\u1ec7t kh\u1ecfi s\u1ef1 xao nh\u00e3ng t\u1eeb m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i. D\u00f9 \u0111ang l\u00e0m vi\u1ec7c t\u1ea1i qu\u00e1n c\u00e0 ph\u00ea \u0111\u00f4ng ng\u01b0\u1eddi, di chuy\u1ec3n tr\u00ean t\u00e0u \u0111i\u1ec7n hay ch\u1edd \u0111\u1ee3i t\u1ea1i s\u00e2n bay, ng\u01b0\u1eddi d\u00f9ng v\u1eabn c\u00f3 th\u1ec3 t\u1eadn h\u01b0\u1edfng kh\u00f4ng gian ri\u00eang t\u01b0, y\u00ean t\u0129nh \u0111\u1ec3 t\u1eadp trung cao \u0111\u1ed9 ho\u1eb7c th\u01b0 gi\u00e3n tinh th\u1ea7n.<\/span><\/p>\n

\"anc-5\"<\/p>\n

Ngo\u00e0i vi\u1ec7c n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng tr\u1ea3i nghi\u1ec7m nghe, c\u00f4ng ngh\u1ec7 ANC c\u00f2n h\u1ed7 tr\u1ee3 c\u1ea3i thi\u1ec7n s\u1ee9c kh\u1ecfe th\u00ednh gi\u00e1c. Thay v\u00ec ph\u1ea3i t\u0103ng \u00e2m l\u01b0\u1ee3ng \u0111\u1ec3 l\u1ea5n \u00e1t ti\u1ebfng \u1ed3n xung quanh, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 gi\u1eef \u00e2m thanh \u1edf m\u1ee9c v\u1eeba ph\u1ea3i m\u00e0 v\u1eabn nghe r\u00f5 n\u1ed9i dung. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m nguy c\u01a1 t\u1ed5n th\u01b0\u01a1ng tai khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u00e2m thanh trong th\u1eddi gian d\u00e0i.<\/span><\/p>\n

C\u00e1c lo\u1ea1i ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng ANC ph\u1ed5 bi\u1ebfn<\/b><\/h3>\n

C\u00e1c lo\u1ea1i ch\u1ed1ng \u1ed3n <\/span>ANC l\u00e0 g\u00ec?<\/b> V\u1edbi lo\u1ea1i c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n \u0111\u1eb7t micro b\u00ean ngo\u00e0i, thi\u1ebft b\u1ecb s\u1ebd thu nh\u1eadn \u00e2m thanh m\u00f4i tr\u01b0\u1eddng tr\u01b0\u1edbc khi truy\u1ec1n \u0111\u1ebfn b\u1ed9 x\u1eed l\u00fd ANC \u0111\u1ec3 t\u1ea1o s\u00f3ng \u00e2m ng\u01b0\u1ee3c pha, tri\u1ec7t ti\u00eau ti\u1ebfng \u1ed3n tr\u01b0\u1edbc khi \u00e2m thanh g\u1ed1c \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb driver. Ki\u1ec3u n\u00e0y x\u1eed l\u00fd kh\u00e1 t\u1ed1t c\u00e1c \u00e2m thanh t\u1ea7n s\u1ed1 cao, tuy nhi\u00ean v\u1eabn c\u00f3 th\u1ec3 \u0111\u1ec3 l\u1ecdt m\u1ed9t s\u1ed1 t\u1ea1p \u00e2m nh\u1eb9 m\u00e0 h\u1ec7 th\u1ed1ng kh\u00f4ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n.<\/span><\/p>\n

\"anc-6\"<\/p>\n

Ng\u01b0\u1ee3c l\u1ea1i, khi micro \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean trong tai nghe \u2013 ngay ph\u00eda tr\u01b0\u1edbc loa \u2013 n\u00f3 s\u1ebd ti\u1ebfp nh\u1eadn \u00e2m thanh theo c\u00e1ch t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ng\u01b0\u1eddi nghe c\u1ea3m nh\u1eadn. Nh\u1edd \u0111\u00f3, h\u1ec7 th\u1ed1ng ph\u1ea3n h\u1ed3i v\u00e0 x\u1eed l\u00fd ch\u00ednh x\u00e1c h\u01a1n \u0111\u1ed1i v\u1edbi t\u1ea1p \u00e2m th\u1ef1c t\u1ebf. D\u00f9 v\u1eady, ki\u1ec3u n\u00e0y l\u1ea1i k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n v\u1edbi c\u00e1c nhi\u1ec5u \u00e2m t\u1ea7n s\u1ed1 cao.<\/span><\/p>\n

Cu\u1ed1i c\u00f9ng, c\u00f4ng ngh\u1ec7 ANC lai l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ea3 hai v\u1ecb tr\u00ed micro b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i, gi\u00fap m\u1edf r\u1ed9ng kh\u1ea3 n\u0103ng kh\u1eed ti\u1ebfng \u1ed3n tr\u00ean nhi\u1ec1u d\u1ea3i t\u1ea7n, mang l\u1ea1i hi\u1ec7u qu\u1ea3 to\u00e0n di\u1ec7n nh\u1ea5t. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho ng\u01b0\u1eddi d\u00f9ng c\u1ea7n s\u1ef1 y\u00ean t\u0129nh t\u1ed1i \u01b0u trong m\u1ecdi \u0111i\u1ec1u ki\u1ec7n.<\/span><\/p>\n

C\u00f4ng ngh\u1ec7 ch\u1ed1ng \u1ed3n ch\u1ee7 \u0111\u1ed9ng ANC c\u00f3 tr\u00ean nh\u1eefng d\u00f2ng tai nghe n\u00e0o?<\/b><\/h2>\n

Kh\u00f4ng ch\u1ec9 xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c m\u1eabu ch\u1ee5p tai (over-ear), ANC c\u00f2n \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p r\u1ed9ng r\u00e3i trong c\u00e1c d\u00f2ng tai nghe nh\u00e9t tai (in-ear) kh\u00f4ng d\u00e2y hi\u1ec7n \u0111\u1ea1i. T\u00f9y theo th\u01b0\u01a1ng hi\u1ec7u v\u00e0 ph\u00e2n kh\u00fac, ch\u1ea5t l\u01b0\u1ee3ng kh\u1eed ti\u1ebfng \u1ed3n c\u00f3 th\u1ec3 kh\u00e1c nhau, nh\u01b0ng h\u1ea7u h\u1ebft \u0111\u1ec1u h\u01b0\u1edbng t\u1edbi m\u1ee5c ti\u00eau mang l\u1ea1i tr\u1ea3i nghi\u1ec7m \u00e2m thanh t\u0129nh l\u1eb7ng v\u00e0 tr\u1ecdn v\u1eb9n h\u01a1n.<\/span><\/p>\n

Tai nghe Bluetooth True Wireless JBL Tour Pro 3<\/b><\/h3>\n

Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/span><\/p>\n