{"id":15455,"date":"2017-03-08T12:09:35","date_gmt":"2017-03-08T05:09:35","guid":{"rendered":"https:\/\/www.baohoxanh.com\/blog\/?p=15455"},"modified":"2026-09-04T10:52:25","modified_gmt":"2026-09-04T03:52:25","slug":"phone-chong-on-chat-luong-tai-tphcm","status":"publish","type":"post","link":"https:\/\/www.baohoxanh.com\/blog\/phone-chong-on-chat-luong-tai-tphcm\/","title":{"rendered":"Phone Ch\u1ed1ng \u1ed2n JE201 Superching: Th\u00f4ng S\u1ed1 V\u00e0 C\u00e1ch Ch\u1ecdn"},"content":{"rendered":"<p><strong>Phone ch\u1ed1ng \u1ed3n JE201<\/strong> c\u1ee7a h\u00e3ng Superching (\u0110\u00e0i Loan) l\u00e0 m\u1eabu ch\u1ee5p tai gi\u1ea3m \u1ed3n t\u1ea7m ph\u1ed5 th\u00f4ng \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 m\u00e1y t\u1ea1i TP.HCM ch\u1ecdn l\u00e0m trang b\u1ecb c\u1ea5p ph\u00e1t \u0111\u1ea1i tr\u00e0, nh\u1edd b\u1ed9 \u0111\u1ec7m x\u1ed1p d\u00e0y v\u00e0 khung \u0111i\u1ec1u ch\u1ec9nh v\u1eeba \u0111\u01b0\u1ee3c nhi\u1ec1u v\u00f2ng \u0111\u1ea7u kh\u00e1c nhau. B\u00e0i vi\u1ebft n\u00e0y \u0111i s\u00e2u v\u00e0o th\u00f4ng s\u1ed1 th\u1eadt c\u1ee7a model JE201, c\u00e1ch \u0111\u1ed1i chi\u1ebfu ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n v\u1edbi m\u1ee9c \u1ed3n \u0111o \u0111\u01b0\u1ee3c t\u1ea1i x\u01b0\u1edfng, v\u00e0 th\u1eddi \u0111i\u1ec3m n\u00ean d\u00f9ng ch\u1ee5p tai thay v\u00ec n\u00fat tai.<\/p>\n<h2>&quot;Phone Ch\u1ed1ng \u1ed2n&quot; Th\u1ef1c Ch\u1ea5t L\u00e0 Thi\u1ebft B\u1ecb G\u00ec?<\/h2>\n<p>Trong ti\u1ebfng Vi\u1ec7t ng\u00e0nh b\u1ea3o h\u1ed9, &quot;phone ch\u1ed1ng \u1ed3n&quot; l\u00e0 c\u00e1ch g\u1ecdi quen thu\u1ed9c c\u1ee7a c\u00f4ng nh\u00e2n cho thi\u1ebft b\u1ecb b\u1ecbt tai d\u1ea1ng ch\u1ee5p: hai c\u1ed1c nh\u1ef1a c\u00f3 \u0111\u1ec7m x\u1ed1p bao tr\u1ecdn v\u00e0nh tai, n\u1ed1i b\u1eb1ng khung \u0111\u1ed9i \u0111\u1ea7u. \u0110\u00e2y kh\u00f4ng ph\u1ea3i tai nghe nh\u1ea1c &ndash; thi\u1ebft b\u1ecb kh\u00f4ng ph\u00e1t \u00e2m thanh, ch\u1ec9 l\u00e0m \u0111\u00fang m\u1ed9t vi\u1ec7c: t\u1ea1o m\u1ed9t bu\u1ed3ng k\u00edn quanh tai \u0111\u1ec3 ch\u1eb7n s\u00f3ng \u00e2m truy\u1ec1n v\u00e0o \u1ed1ng tai. V\u1ec1 chu\u1ea9n qu\u1ed1c t\u1ebf, nh\u00f3m n\u00e0y n\u1eb1m trong <strong>EN 352-1<\/strong> (ch\u1ee5p tai), kh\u00e1c v\u1edbi EN 352-2 d\u00e0nh cho n\u00fat tai nh\u00e9t trong.<\/p>\n<p>Ph\u00e2n bi\u1ec7t \u0111\u00fang t\u00ean g\u1ecdi r\u1ea5t quan tr\u1ecdng khi \u0111\u1eb7t h\u00e0ng: c\u00f9ng m\u1ed9t nh\u00f3m thi\u1ebft b\u1ecb n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u1ee5p tai gi\u1ea3m \u1ed3n hay <a href=\"https:\/\/www.baohoxanh.com\/bit-tai-chong-on\">b\u1ecbt tai ch\u1ed1ng \u1ed3n<\/a>, v\u00e0 gi\u00e1 gi\u1eefa c\u00e1c d\u00f2ng ch\u00eanh l\u1ec7ch r\u1ea5t l\u1edbn t\u00f9y m\u1ee9c gi\u1ea3m \u1ed3n c\u00f4ng b\u1ed1.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2015\/11\/op-tai-chong-on-je-201.jpg\" alt=\"Phone ch\u1ed1ng \u1ed3n JE201 v\u1edbi hai c\u1ed1c nh\u1ef1a v\u00e0 khung \u0111\u1ed9i \u0111\u1ea7u \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c\" loading=\"lazy\" width=\"1200\" height=\"1200\" title=\"\"><\/p>\n<h2>C\u1ea5u T\u1ea1o V\u00e0 Th\u00f4ng S\u1ed1 C\u1ee7a Phone Ch\u1ed1ng \u1ed2n JE201<\/h2>\n<ul>\n<li><strong>V\u1ecf c\u1ed1c:<\/strong> nh\u1ef1a t\u1ed5ng h\u1ee3p ph\u1ed1i tr\u1ed9n, tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9, ch\u1ecbu \u0111\u01b0\u1ee3c va \u0111\u1eadp trong m\u00f4i tr\u01b0\u1eddng nh\u00e0 x\u01b0\u1edfng.<\/li>\n<li><strong>M\u00e0u s\u1eafc:<\/strong> \u0111en v\u00e0 \u0111\u1ecf &ndash; m\u00e0u \u0111\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ecdn cho khu v\u1ef1c b\u1eaft bu\u1ed9c \u0111eo b\u1ea3o v\u1ec7 th\u00ednh gi\u00e1c \u0111\u1ec3 gi\u00e1m s\u00e1t d\u1ec5 nh\u1eadn di\u1ec7n t\u1eeb xa.<\/li>\n<li><strong>\u0110\u1ec7m tai:<\/strong> \u0111\u1ed9n x\u1ed1p m\u1ec1m, b\u1ec1 m\u1eb7t r\u1ed9ng \u00f4m tr\u1ecdn v\u00e0nh tai &ndash; y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 k\u00edn v\u00e0 do \u0111\u00f3 quy\u1ebft \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 gi\u1ea3m \u1ed3n th\u1ef1c t\u1ebf.<\/li>\n<li><strong>Khung \u0111\u1ed9i \u0111\u1ea7u:<\/strong> \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c chi\u1ec1u cao hai b\u00ean, ph\u00f9 h\u1ee3p v\u00f2ng \u0111\u1ea7u ng\u01b0\u1eddi Vi\u1ec7t c\u1ea3 nam l\u1eabn n\u1eef.<\/li>\n<li><strong>M\u1ee9c gi\u1ea3m \u1ed3n c\u00f4ng b\u1ed1:<\/strong> trang s\u1ea3n ph\u1ea9m JE-201 c\u1ee7a ch\u00ednh Superching kh\u00f4ng in con s\u1ed1 gi\u1ea3m \u1ed3n n\u00e0o, n\u00ean con s\u1ed1 ph\u1ea3i l\u1ea5y t\u1eeb phi\u1ebfu th\u1eed c\u1ee7a \u0111\u00fang l\u00f4 \u0111ang giao. M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t \u0110\u00e0i Loan kh\u00e1c c\u0169ng b\u00e1n ch\u1ee5p tai mang m\u00e3 JE201, c\u00f4ng b\u1ed1 SNR 26 dB theo EN 352-1:2020 v\u00e0 NRR 25 dB theo ANSI S3.19 &ndash; hai con s\u1ed1 c\u1ee7a hai h\u1ec7 kh\u00e1c nhau, kh\u00f4ng quy \u0111\u1ed5i v\u00e0 kh\u00f4ng so tr\u1ef1c ti\u1ebfp.<\/li>\n<li><strong>Xu\u1ea5t x\u1ee9:<\/strong> th\u01b0\u01a1ng hi\u1ec7u Superching, doanh nghi\u1ec7p \u0110\u00e0i Loan.<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2016\/11\/bit-tai-chong-on-je-201-bvt0009_1.jpg\" alt=\"B\u1ecbt tai ch\u1ed1ng \u1ed3n JE201 nh\u00ecn nghi\u00eang, th\u1ea5y r\u00f5 l\u1edbp \u0111\u1ec7m x\u1ed1p quanh mi\u1ec7ng c\u1ed1c\" loading=\"lazy\" width=\"500\" height=\"500\" title=\"\"><\/p>\n<h2>\u0110\u1ecdc Ch\u1ec9 S\u1ed1 Gi\u1ea3m \u1ed2n V\u00e0 \u0110\u1ed1i Chi\u1ebfu V\u1edbi M\u1ee9c \u1ed2n T\u1ea1i X\u01b0\u1edfng<\/h2>\n<p>Ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 theo hai h\u1ec7: <strong>SNR<\/strong> (h\u1ec7 ch\u00e2u \u00c2u, \u0111o theo EN ISO 4869-2, th\u01b0\u1eddng \u0111i k\u00e8m b\u1ed9 ba H\/M\/L cho ba d\u1ea3i t\u1ea7n) v\u00e0 <strong>NRR<\/strong> (h\u1ec7 M\u1ef9, \u0111o theo ANSI S3.19). Hai h\u1ec7 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p \u0111o v\u00e0 l\u1ed1i t\u00ednh kh\u00e1c nhau n\u00ean kh\u00f4ng quy \u0111\u1ed5i \u0111\u01b0\u1ee3c cho nhau, v\u00e0 m\u1ed7i h\u1ec7 c\u00f3 ph\u00e9p tr\u1eeb ri\u00eang. C\u1ea3 hai \u0111\u1ec1u l\u00e0 s\u1ed1 \u0111o ph\u00f2ng th\u00ed nghi\u1ec7m v\u1edbi ng\u01b0\u1eddi \u0111eo \u0111\u00fang k\u1ef9 thu\u1eadt; t\u1ea1i x\u01b0\u1edfng &ndash; t\u00f3c, k\u00ednh, kh\u1ea9u trang, m\u0169 c\u1ee9ng ch\u00e8n v\u00e0o vi\u1ec1n \u0111\u1ec7m &ndash; hi\u1ec7u qu\u1ea3 lu\u00f4n th\u1ea5p h\u01a1n, n\u00ean ph\u1ea3i tr\u1eeb hao tr\u01b0\u1edbc khi k\u1ebft lu\u1eadn.<\/p>\n<p><em>H\u1ec7 M\u1ef9: m\u1ee9c t\u1ea1i tai &asymp; m\u1ee9c \u1ed3n \u0111o theo thang A &minus; (NRR &minus; 7). Mu\u1ed1n th\u1eadn tr\u1ecdng th\u00ec OSHA cho ph\u00e9p tr\u1eeb hao th\u00eam 50%, th\u00e0nh &minus; (NRR &minus; 7) &divide; 2. Ri\u00eang NIOSH tr\u1eeb hao theo lo\u1ea1i thi\u1ebft b\u1ecb, ch\u1ee5p tai gi\u1eef l\u1ea1i 75% c\u1ee7a ph\u1ea7n (NRR &minus; 7).<\/em><\/p>\n<p><em>H\u1ec7 ch\u00e2u \u00c2u: m\u1ee9c t\u1ea1i tai &asymp; m\u1ee9c \u1ed3n \u0111o theo thang C &minus; SNR.<\/em><\/p>\n<p>V\u00ed d\u1ee5 theo h\u1ec7 M\u1ef9: x\u01b0\u1edfng d\u1eadp kim lo\u1ea1i \u0111o \u0111\u01b0\u1ee3c 100 dB(A), ch\u1ee5p tai c\u00f4ng b\u1ed1 NRR 25 th\u00ec ph\u1ea7n gi\u1ea3m danh ngh\u0129a l\u00e0 25 &minus; 7 = 18, tr\u1eeb hao 50% c\u00f2n 9, m\u1ee9c t\u1ea1i tai \u01b0\u1edbc kho\u1ea3ng 91 dB(A) &ndash; v\u1eabn tr\u00ean ng\u01b0\u1ee1ng h\u00e0nh \u0111\u1ed9ng 85 dB(A). Tr\u01b0\u1eddng h\u1ee3p n\u00e0y c\u1ea7n ch\u1ecdn model c\u00f3 ch\u1ec9 s\u1ed1 cao h\u01a1n ho\u1eb7c k\u1ebft h\u1ee3p \u0111\u1ed3ng th\u1eddi n\u00fat tai b\u00ean trong. M\u1ed1c 85 dB(A) t\u00ednh trung b\u00ecnh theo t\u00e1m gi\u1edd c\u0169ng ch\u00ednh l\u00e0 ng\u01b0\u1ee1ng m\u00e0 c\u01a1 quan qu\u1ea3n l\u00fd an to\u00e0n lao \u0111\u1ed9ng Hoa K\u1ef3 \u0111\u1eb7t ra \u0111\u1ec3 b\u1eaft bu\u1ed9c tri\u1ec3n khai ch\u01b0\u01a1ng tr\u00ecnh b\u1ea3o t\u1ed3n th\u00ednh l\u1ef1c, tr\u00ecnh b\u00e0y trong chuy\u00ean trang <a href=\"https:\/\/www.osha.gov\/noise\" target=\"_blank\" rel=\"noopener nofollow\">ph\u01a1i nhi\u1ec5m ti\u1ebfng \u1ed3n ngh\u1ec1 nghi\u1ec7p c\u1ee7a OSHA<\/a>.<\/p>\n<p>B\u1ea3ng tham chi\u1ebfu nhanh d\u01b0\u1edbi \u0111\u00e2y l\u1ea5y theo h\u01b0\u1edbng d\u1eabn ch\u1ecdn SNR c\u1ee7a c\u01a1 quan an to\u00e0n lao \u0111\u1ed9ng Anh, n\u00ean c\u00e1c con s\u1ed1 b\u00ean ph\u1ea3i l\u00e0 ch\u1ec9 s\u1ed1 h\u1ec7 ch\u00e2u \u00c2u, kh\u00f4ng ph\u1ea3i NRR:<\/p>\n<ul>\n<li><strong>85&ndash;90 dB(A):<\/strong> SNR 20 tr\u1edf xu\u1ed1ng.<\/li>\n<li><strong>90&ndash;95 dB(A):<\/strong> SNR 20&ndash;30 &ndash; ph\u00e2n kh\u00fac JE201 n\u1eb1m \u1edf \u0111\u00e2y.<\/li>\n<li><strong>95&ndash;100 dB(A):<\/strong> SNR 25&ndash;35, \u0111\u1ec7m d\u00e0y.<\/li>\n<li><strong>T\u1eeb 100 dB(A) tr\u1edf l\u00ean:<\/strong> SNR t\u1eeb 30, \u0111\u1ed3ng th\u1eddi t\u00ednh ph\u01b0\u01a1ng \u00e1n \u0111eo k\u00e9p v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian ti\u1ebfp x\u00fac. QCVN 24:2016\/BYT \u0111\u1eb7t tr\u1ea7n 115 dB(A) cho ti\u1ebfng \u1ed3n t\u1ea1i n\u01a1i l\u00e0m vi\u1ec7c.<\/li>\n<\/ul>\n<p>C\u00f2n m\u1ed9t h\u01b0\u1edbng sai n\u1eefa, theo chi\u1ec1u ng\u01b0\u1ee3c l\u1ea1i. \u00c9p m\u1ee9c t\u1ea1i tai xu\u1ed1ng d\u01b0\u1edbi 70 dB(A) l\u00e0 b\u1ea3o v\u1ec7 qu\u00e1 m\u1ee9c: c\u00f4ng nh\u00e2n kh\u00f4ng nghe \u0111\u01b0\u1ee3c ti\u1ebfng c\u1ea3nh b\u00e1o, ti\u1ebfng xe n\u00e2ng hay hi\u1ec7u l\u1ec7nh \u0111\u1ed3ng \u0111\u1ed9i &ndash; v\u00e0 h\u1ecd s\u1ebd t\u1ef1 th\u00e1o ra. Kho\u1ea3ng c\u1ea7n nh\u1eafm l\u00e0 70&ndash;80 dB(A) t\u1ea1i tai, ch\u1ecdn thi\u1ebft b\u1ecb qu\u00e1 m\u1ea1nh cho m\u00f4i tr\u01b0\u1eddng ch\u1ec9 85 dB(A) l\u00e0 r\u01a1i th\u1eb3ng v\u00e0o v\u00f9ng n\u00e0y. B\u1ea3o v\u1ec7 &quot;th\u1eeba&quot; th\u01b0\u1eddng d\u1eabn t\u1edbi kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 g\u00ec c\u1ea3.<\/p>\n<h2>Khi N\u00e0o Ch\u1ecdn Ch\u1ee5p Tai, Khi N\u00e0o Ch\u1ecdn N\u00fat Tai?<\/h2>\n<p>Hai nh\u00f3m thi\u1ebft b\u1ecb n\u00e0y kh\u00f4ng thay th\u1ebf nhau m\u00e0 b\u00f9 cho nhau:<\/p>\n<ul>\n<li><strong>Ch\u1ecdn ch\u1ee5p tai (nh\u01b0 JE201)<\/strong> khi ti\u1ebfng \u1ed3n ng\u1eaft qu\u00e3ng, c\u00f4ng nh\u00e2n ph\u1ea3i th\u00e1o &ndash; \u0111eo li\u00ean t\u1ee5c trong ca; khi c\u1ea7n gi\u00e1m s\u00e1t vi\u1ec7c tu\u00e2n th\u1ee7 b\u1eb1ng m\u1eaft t\u1eeb xa; ho\u1eb7c khi ng\u01b0\u1eddi lao \u0111\u1ed9ng b\u1ecb vi\u00eam \u1ed1ng tai, kh\u00f4ng nh\u00e9t \u0111\u01b0\u1ee3c n\u00fat.<\/li>\n<li><strong>Ch\u1ecdn n\u00fat tai<\/strong> khi ph\u1ea3i \u0111eo su\u1ed1t ca trong m\u00f4i tr\u01b0\u1eddng n\u00f3ng \u1ea9m, khi \u0111\u1ed9i th\u00eam m\u0169 c\u1ee9ng v\u00e0 k\u00ednh l\u00e0m ch\u1ee5p tai h\u1edf vi\u1ec1n, ho\u1eb7c khi kh\u00f4ng gian thao t\u00e1c ch\u1eadt.<\/li>\n<\/ul>\n<p>\u0110\u1ec3 so s\u00e1nh chi ti\u1ebft t\u1eebng nh\u00f3m tr\u01b0\u1edbc khi l\u1eadp \u0111\u1ecbnh m\u1ee9c c\u1ea5p ph\u00e1t, \u0111\u1ed1i chi\u1ebfu th\u00eam d\u1ea3i s\u1ea3n ph\u1ea9m \u1edf danh m\u1ee5c <a href=\"https:\/\/www.baohoxanh.com\/nut-tai-chong-on\">n\u00fat tai ch\u1ed1ng \u1ed3n<\/a> v\u00e0 to\u00e0n b\u1ed9 nh\u00f3m <a href=\"https:\/\/www.baohoxanh.com\/bao-ho-tai\">b\u1ea3o h\u1ed9 tai<\/a>.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2016\/05\/nut-bit-tai-chong-on-fep-03-malaysia-bvt0004_1.jpg\" alt=\"N\u00fat tai ch\u1ed1ng \u1ed3n FEP-03 d\u1ea1ng nh\u00e9t trong k\u00e8m h\u1ed9p \u0111\u1ef1ng b\u1ecf t\u00fai\" loading=\"lazy\" width=\"500\" height=\"500\" title=\"\"><\/p>\n<h3>\u0110eo K\u00e9p N\u00fat Tai V\u00e0 Ch\u1ee5p Tai<\/h3>\n<p>\u0110eo k\u00e9p ngh\u0129a l\u00e0 nh\u00e9t n\u00fat tai v\u00e0o \u1ed1ng tai r\u1ed3i \u00fap th\u00eam ch\u1ee5p tai ra ngo\u00e0i. \u0110i\u1ec3m d\u1ec5 hi\u1ec3u sai: hai ch\u1ec9 s\u1ed1 kh\u00f4ng c\u1ed9ng d\u1ed3n. Ph\u1ea7n t\u0103ng th\u00eam th\u1ef1c t\u1ebf th\u01b0\u1eddng ch\u1ec9 v\u00e0i decibel so v\u1edbi thi\u1ebft b\u1ecb m\u1ea1nh h\u01a1n trong hai m\u00f3n, v\u00ec \u0111\u1ebfn m\u1ed9t m\u1ee9c n\u00e0o \u0111\u00f3 \u00e2m thanh kh\u00f4ng \u0111i qua \u1ed1ng tai n\u1eefa m\u00e0 truy\u1ec1n qua x\u01b0\u01a1ng s\u1ecd. V\u00ec th\u1ebf \u0111eo k\u00e9p ch\u1ec9 \u0111\u1eb7t ra \u1edf ba t\u00ecnh hu\u1ed1ng: m\u1ee9c \u1ed3n v\u01b0\u1ee3t xa kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb, c\u00f4ng vi\u1ec7c va \u0111\u1eadp xung l\u1ef1c nh\u01b0 d\u1eadp v\u00e0 \u0111\u00f3ng c\u1ecdc, ho\u1eb7c ng\u01b0\u1eddi lao \u0111\u1ed9ng \u0111\u00e3 c\u00f3 d\u1ea5u hi\u1ec7u suy gi\u1ea3m th\u00ednh l\u1ef1c trong h\u1ed3 s\u01a1 kh\u00e1m s\u1ee9c kh\u1ecfe.<\/p>\n<p>Khi \u00e1p d\u1ee5ng \u0111eo k\u00e9p, n\u00fat tai ph\u1ea3i l\u00e0 lo\u1ea1i nh\u00e9t \u0111\u00fang s\u00e2u ch\u1ee9 kh\u00f4ng ph\u1ea3i lo\u1ea1i c\u00f3 g\u1ecdng ch\u1eb7n ngo\u00e0i, v\u00ec g\u1ecdng s\u1ebd ch\u00e8n v\u00e0o vi\u1ec1n \u0111\u1ec7m c\u1ee7a ch\u1ee5p tai v\u00e0 ph\u00e1 lu\u00f4n \u0111\u1ed9 k\u00edn c\u1ee7a l\u1edbp ngo\u00e0i.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2017\/03\/nut-bit-tai-chong-on-EP1363.jpg\" alt=\"C\u1eb7p n\u00fat tai EP1363 c\u00f3 d\u00e2y n\u1ed1i, lo\u1ea1i d\u00f9ng khi ph\u1ea3i \u0111eo k\u00e9p c\u00f9ng ch\u1ee5p tai\" loading=\"lazy\" width=\"786\" height=\"570\" title=\"\"><\/p>\n<h3>Ng\u01b0\u1eddi Nghe K\u00e9m M\u1ed9t B\u00ean V\u00e0 Ng\u01b0\u1eddi \u0110eo M\u00e1y Tr\u1ee3 Th\u00ednh<\/h3>\n<p>Nh\u00f3m n\u00e0y hay b\u1ecb b\u1ecf qu\u00ean khi l\u1eadp \u0111\u1ecbnh m\u1ee9c. Ng\u01b0\u1eddi ch\u1ec9 c\u00f2n nghe t\u1ed1t m\u1ed9t b\u00ean tai v\u1eabn ph\u1ea3i b\u1ea3o v\u1ec7 b\u00ean tai l\u00e0nh, nh\u01b0ng n\u1ebfu b\u1ecbt k\u00edn c\u1ea3 hai b\u00ean h\u1ecd s\u1ebd m\u1ea5t ho\u00e0n to\u00e0n kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u01b0\u1edbng \u00e2m thanh trong x\u01b0\u1edfng. C\u00e1ch x\u1eed l\u00fd th\u01b0\u1eddng d\u00f9ng l\u00e0 gi\u1eef m\u1ee9c gi\u1ea3m \u1ed3n v\u1eeba \u0111\u1ee7 so v\u1edbi s\u1ed1 \u0111o th\u1ef1c t\u1ebf, \u0111\u1ed3ng th\u1eddi b\u1ed5 sung t\u00edn hi\u1ec7u b\u1eb1ng \u0111\u00e8n nh\u1ea5p nh\u00e1y t\u1ea1i c\u00e1c v\u1ecb tr\u00ed xe n\u00e2ng v\u00e0 c\u1eeda ra v\u00e0o.<\/p>\n<p>V\u1edbi ng\u01b0\u1eddi \u0111eo m\u00e1y tr\u1ee3 th\u00ednh, ch\u1ee5p tai \u00fap \u0111\u00e8 l\u00ean m\u00e1y th\u01b0\u1eddng g\u00e2y r\u00edt do ph\u1ea3n h\u1ed3i \u00e2m v\u00e0 l\u00e0m h\u1edf vi\u1ec1n \u0111\u1ec7m. Tr\u01b0\u1eddng h\u1ee3p n\u00e0y c\u1ea7n y t\u1ebf lao \u0111\u1ed9ng v\u00e0 nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb tr\u1ee3 th\u00ednh c\u00f9ng xem x\u00e9t, kh\u00f4ng t\u1ef1 quy\u1ebft b\u1eb1ng c\u00e1ch ph\u00e1t th\u00eam m\u1ed9t chi\u1ebfc ch\u1ee5p tai to h\u01a1n.<\/p>\n<h2>\u0110eo \u0110\u00fang C\u00e1ch \u0110\u1ec3 Kh\u00f4ng M\u1ea5t Hi\u1ec7u Qu\u1ea3<\/h2>\n<ol>\n<li>V\u00e9n t\u00f3c v\u00e0 g\u1ee1 v\u1eadt c\u1ea3n ra kh\u1ecfi v\u00f9ng vi\u1ec1n \u0111\u1ec7m &ndash; m\u1ed9t l\u1ecdn t\u00f3c d\u00e0y c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t v\u00e0i dB.<\/li>\n<li>\u0110\u1eb7t c\u1ed1c bao tr\u1ecdn v\u00e0nh tai, kh\u00f4ng \u0111\u1ec3 c\u1ea1nh \u0111\u1ec7m \u0111\u00e8 l\u00ean d\u00e1i tai.<\/li>\n<li>\u0110i\u1ec1u ch\u1ec9nh khung sao cho \u00e1p l\u1ef1c ph\u00e2n b\u1ed1 \u0111\u1ec1u hai b\u00ean, kh\u00f4ng b\u00f3p ch\u1eb7t g\u00e2y \u0111au th\u00e1i d\u01b0\u01a1ng.<\/li>\n<li>N\u1ebfu \u0111eo k\u00ednh b\u1ea3o h\u1ed9, ch\u1ecdn g\u1ecdng d\u1eb9t \u0111\u1ec3 gi\u1ea3m khe h\u1edf t\u1ea1i v\u1ecb tr\u00ed g\u1ecdng \u0111i qua \u0111\u1ec7m.<\/li>\n<li>Ki\u1ec3m tra b\u1eb1ng c\u00e1ch b\u1ecbt &ndash; th\u1ea3: \u00fap tay l\u00ean hai c\u1ed1c, n\u1ebfu \u00e2m thanh gi\u1ea3m th\u00eam r\u00f5 r\u1ec7t th\u00ec \u0111\u1ec7m \u0111ang h\u1edf, c\u1ea7n ch\u1ec9nh l\u1ea1i.<\/li>\n<\/ol>\n<h2>B\u1ea3o Qu\u1ea3n V\u00e0 Th\u1eddi \u0110i\u1ec3m Thay \u0110\u1ec7m Tai<\/h2>\n<ul>\n<li>Lau \u0111\u1ec7m v\u00e0 c\u1ed1c b\u1eb1ng kh\u0103n \u1ea9m sau m\u1ed7i ca; kh\u00f4ng ng\u00e2m n\u01b0\u1edbc, kh\u00f4ng d\u00f9ng c\u1ed3n c\u00f4ng nghi\u1ec7p l\u00e0m gi\u00f2n l\u1edbp x\u1ed1p.<\/li>\n<li>Treo n\u01a1i kh\u00f4 tho\u00e1ng, tr\u00e1nh \u0111\u1ec3 tr\u00ean b\u1ec1 m\u1eb7t n\u00f3ng ho\u1eb7c d\u01b0\u1edbi n\u1eafng &ndash; nhi\u1ec7t l\u00e0m x\u1ed1p chai v\u00e0 co l\u1ea1i.<\/li>\n<li>Thay \u0111\u1ec7m tai khi th\u1ea5y c\u1ee9ng, n\u1ee9t, b\u1ea1c m\u00e0u ho\u1eb7c kh\u00f4ng c\u00f2n \u0111\u00e0n h\u1ed3i; th\u00f4ng th\u01b0\u1eddng 6&ndash;12 th\u00e1ng t\u00f9y \u0111\u1ed9 \u1ea9m v\u00e0 t\u1ea7n su\u1ea5t \u0111eo.<\/li>\n<li>Lo\u1ea1i b\u1ecf c\u1ea3 b\u1ed9 khi khung m\u1ea5t l\u1ef1c \u00e9p (\u0111eo m\u00e0 c\u1ed1c t\u1ef1 tr\u01b0\u1ee3t xu\u1ed1ng), n\u1ee9t c\u1ed1c ho\u1eb7c g\u00e3y ch\u1ed1t \u0111i\u1ec1u ch\u1ec9nh.<\/li>\n<li>Kh\u00f4ng c\u1ea3i ti\u1ebfn t\u1ef1 ph\u00e1t: khoan l\u1ed7, d\u00e1n mi\u1ebfng x\u1ed1p l\u1ea1 hay c\u1eaft b\u1edbt khung \u0111\u1ec1u l\u00e0m sai l\u1ec7ch hi\u1ec7u qu\u1ea3 \u0111\u00e3 th\u1eed nghi\u1ec7m.<\/li>\n<\/ul>\n<h2>L\u01b0u \u00dd Khi Mua Phone Ch\u1ed1ng \u1ed2n<\/h2>\n<p>H\u00e0ng tr\u00f4i n\u1ed5i th\u01b0\u1eddng kh\u00f4ng c\u00f4ng b\u1ed1 ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n, ho\u1eb7c ghi m\u1ed9t con s\u1ed1 &quot;\u0111\u1eb9p&quot; m\u00e0 kh\u00f4ng n\u00f3i theo h\u1ec7 SNR hay NRR. Khi nh\u1eadn h\u00e0ng n\u00ean ki\u1ec3m tra: nh\u00e3n c\u00f3 ghi ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m; \u0111\u1ec7m tai m\u1ec1m \u0111\u1ec1u, kh\u00f4ng c\u00f3 m\u00f9i nh\u1ef1a g\u1eaft; khung b\u1eadt l\u1ea1i d\u1ee9t kho\u00e1t sau khi k\u00e9o gi\u00e3n; v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 cho c\u00f4ng nh\u00e2n \u0111eo th\u1eed \u00edt nh\u1ea5t m\u1ed9t ca &ndash; thi\u1ebft b\u1ecb g\u00e2y \u0111au tai sau 2 gi\u1edd s\u1ebd b\u1ecb th\u00e1o ra d\u00f9 ch\u1ec9 s\u1ed1 c\u00f3 t\u1ed1t \u0111\u1ebfn \u0111\u00e2u.<\/p>\n<h3>\u0110\u1ecdc T\u00e0i Li\u1ec7u K\u00e8m Theo Tr\u01b0\u1edbc Khi Duy\u1ec7t M\u1eabu<\/h3>\n<p>M\u1ed9t m\u1eabu nghi\u00eam t\u00fac lu\u00f4n \u0111i k\u00e8m b\u1ed1n th\u1ee9 gi\u1ea5y t\u1edd: b\u1ea3n c\u00f4ng b\u1ed1 h\u1ee3p chu\u1ea9n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, b\u1ea3ng s\u1ed1 li\u1ec7u gi\u1ea3m \u1ed3n \u0111\u1ea7y \u0111\u1ee7 theo t\u1eebng d\u1ea3i t\u1ea7n k\u00e8m \u0111\u1ed9 l\u1ec7ch chu\u1ea9n, t\u00ean t\u1ed5 ch\u1ee9c \u0111\u00e3 th\u1eed nghi\u1ec7m, v\u00e0 h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng b\u1eb1ng ti\u1ebfng Vi\u1ec7t. Thi\u1ebfu b\u1ea3ng s\u1ed1 li\u1ec7u theo d\u1ea3i t\u1ea7n th\u00ec con s\u1ed1 duy nh\u1ea5t in tr\u00ean h\u1ed9p kh\u00f4ng \u0111\u1ed1i chi\u1ebfu \u0111\u01b0\u1ee3c v\u1edbi ph\u1ed5 ti\u1ebfng \u1ed3n c\u1ee7a x\u01b0\u1edfng.<\/p>\n<p>C\u0169ng n\u00ean bi\u1ebft tr\u01b0\u1edbc r\u1eb1ng s\u1ed1 li\u1ec7u n\u00e0y c\u00f3 bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng: khi c\u00f9ng m\u1ed9t m\u1eabu \u0111\u01b0\u1ee3c th\u1eed l\u1ea1i, ch\u00eanh l\u1ec7ch v\u00e0i decibel v\u1eabn n\u1eb1m trong sai s\u1ed1 c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p \u0111o, nh\u01b0 tr\u00ecnh b\u00e0y trong <a href=\"https:\/\/multimedia.3m.com\/mws\/media\/2245985O\/3m-technical-bulletin-en-352-2020-further-explained.pdf\" target=\"_blank\" rel=\"noopener nofollow\">b\u1ea3n tin k\u1ef9 thu\u1eadt c\u1ee7a 3M v\u1ec1 b\u1ed9 ti\u00eau chu\u1ea9n EN 352<\/a>. V\u00ec v\u1eady \u0111\u1eebng lo\u1ea1i m\u1ed9t m\u1eabu ch\u1ec9 v\u00ec n\u00f3 th\u1ea5p h\u01a1n m\u1eabu kh\u00e1c \u0111\u00fang m\u1ed9t ho\u1eb7c hai \u0111\u01a1n v\u1ecb.<\/p>\n<h3>Ba C\u00e2u H\u1ecfi N\u00ean G\u1eedi Nh\u00e0 Cung C\u1ea5p Tr\u01b0\u1edbc Khi \u0110\u1eb7t S\u1ed1 L\u01b0\u1ee3ng L\u1edbn<\/h3>\n<ul>\n<li><strong>C\u00f3 b\u00e1n r\u1eddi b\u1ed9 \u0111\u1ec7m thay th\u1ebf cho model n\u00e0y kh\u00f4ng, v\u00e0 giao trong bao l\u00e2u?<\/strong> Kh\u00f4ng c\u00f3 \u0111\u1ec7m r\u1eddi th\u00ec sau m\u1ed9t n\u0103m c\u1ea3 l\u00f4 th\u00e0nh h\u00e0ng b\u1ecf.<\/li>\n<li><strong>L\u00f4 k\u1ebf ti\u1ebfp c\u00f3 c\u00f9ng m\u00e3 v\u00e0 c\u00f9ng nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t kh\u00f4ng?<\/strong> C\u00f9ng t\u00ean th\u01b0\u01a1ng m\u1ea1i nh\u01b0ng kh\u00e1c nh\u00e0 m\u00e1y th\u00ec s\u1ed1 li\u1ec7u gi\u1ea3m \u1ed3n c\u00f3 th\u1ec3 kh\u00e1c.<\/li>\n<li><strong>Cho m\u01b0\u1ee3n m\u1eabu \u0111eo th\u1eed bao nhi\u00eau b\u1ed9 v\u00e0 trong bao l\u00e2u?<\/strong> Ba \u0111\u1ebfn n\u0103m b\u1ed9 cho m\u1ed9t t\u1ed5, th\u1eed \u0111\u1ee7 m\u1ed9t tu\u1ea7n, l\u00e0 c\u00e1ch r\u1ebb nh\u1ea5t \u0111\u1ec3 tr\u00e1nh mua nh\u1ea7m c\u1ea3 ngh\u00ecn chi\u1ebfc.<\/li>\n<\/ul>\n<h2>D\u00f9ng Chung M\u1ed9t Chi\u1ebfc Ch\u1ee5p Tai \u0110\u01b0\u1ee3c \u0110\u1ebfn \u0110\u00e2u<\/h2>\n<h3>Phone Ch\u1ed1ng \u1ed2n JE201 C\u00f3 Nghe \u0110\u01b0\u1ee3c Nh\u1ea1c Kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng. \u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 th\u00ednh gi\u00e1c thu\u1ea7n c\u01a1 h\u1ecdc, kh\u00f4ng c\u00f3 loa hay pin. Lo\u1ea1i c\u00f3 radio\/bluetooth thu\u1ed9c d\u00f2ng kh\u00e1c v\u00e0 c\u1ea7n xem x\u00e9t k\u1ef9 v\u00ec c\u00f3 th\u1ec3 che m\u1ea5t t\u00edn hi\u1ec7u c\u1ea3nh b\u00e1o.<\/p>\n<h3>\u0110eo Ch\u1ee5p Tai C\u00f9ng M\u0169 B\u1ea3o H\u1ed9 \u0110\u01b0\u1ee3c Kh\u00f4ng?<\/h3>\n<p>\u0110\u01b0\u1ee3c, nh\u01b0ng khung \u0111\u1ed9i \u0111\u1ea7u d\u1ec5 b\u1ecb v\u00e0nh m\u0169 \u0111\u1ea9y l\u1ec7ch l\u00e0m h\u1edf \u0111\u1ec7m. N\u1ebfu c\u00f4ng vi\u1ec7c b\u1eaft bu\u1ed9c \u0111\u1ed9i m\u0169 c\u1ee9ng c\u1ea3 ca, n\u00ean chuy\u1ec3n sang lo\u1ea1i ch\u1ee5p tai g\u1eafn tr\u1ef1c ti\u1ebfp v\u00e0o khe m\u0169 theo EN 352-3, khe ti\u00eau chu\u1ea9n r\u1ed9ng 30 mm. Lo\u1ea1i n\u00e0y \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn g\u1eafn li\u1ec1n v\u1edbi m\u1ed9t danh s\u00e1ch m\u1eabu m\u0169 c\u1ee5 th\u1ec3; l\u1eafp sang m\u0169 ngo\u00e0i danh s\u00e1ch th\u00ec s\u1ed1 li\u1ec7u gi\u1ea3m \u1ed3n c\u00f4ng b\u1ed1 m\u1ea5t hi\u1ec7u l\u1ef1c.<\/p>\n<h3>M\u1ed9t Chi\u1ebfc Phone D\u00f9ng Chung Nhi\u1ec1u Ng\u01b0\u1eddi C\u00f3 Sao Kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng n\u00ean. \u0110\u1ec7m tai ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi da v\u00e0 m\u1ed3 h\u00f4i, d\u00f9ng chung d\u1ec5 l\u00e2y n\u1ea5m da. N\u1ebfu b\u1eaft bu\u1ed9c d\u00f9ng chung theo ca, ph\u1ea3i v\u1ec7 sinh \u0111\u1ec7m gi\u1eefa hai ca v\u00e0 c\u1ea5p b\u1ecdc \u0111\u1ec7m d\u00f9ng m\u1ed9t l\u1ea7n.<\/p>\n<h3>Bao L\u00e2u Ph\u1ea3i \u0110o L\u1ea1i M\u1ee9c \u1ed2n \u1ede X\u01b0\u1edfng?<\/h3>\n<p>N\u00ean \u0111o l\u1ea1i m\u1ed7i khi thay \u0111\u1ed5i d\u00e2y chuy\u1ec1n, b\u1ed5 sung m\u00e1y m\u1edbi ho\u1eb7c \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n m\u1ed7i n\u0103m. Ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n c\u1ea7n ch\u1ecdn theo s\u1ed1 li\u1ec7u \u0111o th\u1ef1c t\u1ebf t\u1ea1i v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c, kh\u00f4ng \u01b0\u1edbc l\u01b0\u1ee3ng b\u1eb1ng c\u1ea3m nh\u1eadn.<\/p>\n<hr \/>\n<p>\u0110o\u00e0n ki\u1ec3m tra h\u1ecfi t\u1edbi ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n ch\u1ee9 kh\u00f4ng h\u1ecfi t\u00ean h\u00e3ng. B\u1ea3n c\u00f4ng b\u1ed1 c\u1ee7a \u0111\u00fang model, k\u00e8m d\u1ea3i t\u1ea7n \u0111\u00e3 \u0111o, v\u00ec v\u1eady ph\u1ea3i n\u1eb1m s\u1eb5n trong h\u1ed3 s\u01a1 an to\u00e0n lao \u0111\u1ed9ng ngay t\u1eeb \u0111\u1ee3t mua \u0111\u1ea7u ti\u00ean.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ch\u1ee5p tai ch\u1ed1ng \u1ed3n JE201 Superching: c\u1ea5u t\u1ea1o, c\u00e1ch \u0111\u1ecdc ch\u1ec9 s\u1ed1 SNR v\u00e0 NRR theo \u0111\u00fang h\u1ec7, ph\u00e9p tr\u1eeb hao c\u1ee7a OSHA v\u00e0 th\u1eddi \u0111i\u1ec3m n\u00ean d\u00f9ng ch\u1ee5p tai thay cho n\u00fat tai.<\/p>\n","protected":false},"author":969,"featured_media":15457,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6934],"tags":[50,179],"class_list":["post-15455","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-xoa-gsc","tag-bao-ho-lao-dong-chat-luong","tag-nut-tai-chong-on"],"_links":{"self":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/15455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/users\/969"}],"replies":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/comments?post=15455"}],"version-history":[{"count":20,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/15455\/revisions"}],"predecessor-version":[{"id":94980,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/15455\/revisions\/94980"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/media\/15457"}],"wp:attachment":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/media?parent=15455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/categories?post=15455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/tags?post=15455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}