{"id":43852,"date":"2023-04-25T16:48:22","date_gmt":"2023-04-25T21:48:22","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-blocks-ultrasonic-sound-waves\/"},"modified":"2025-01-21T07:27:10","modified_gmt":"2025-01-21T12:27:10","slug":"what-blocks-ultrasonic-sound-waves","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-blocks-ultrasonic-sound-waves\/","title":{"rendered":"Nh\u1eefng V\u1eadt Li\u1ec7u Ng\u0103n Ch\u1eb7n S\u00f3ng Si\u00eau \u00c2m"},"content":{"rendered":"<p>S\u00f3ng si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Tuy nhi\u00ean, kh\u1ea3 n\u0103ng lan truy\u1ec1n c\u1ee7a s\u00f3ng si\u00eau \u00e2m b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o c\u1ea3n tr\u1edf s\u00f3ng si\u00eau \u00e2m l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 ng\u0103n ch\u1eb7n s\u1ef1 lan truy\u1ec1n c\u1ee7a s\u00f3ng si\u00eau \u00e2m.<\/p>\n<h3>V\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh<\/h3>\n<p>M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a s\u00f3ng si\u00eau \u00e2m, chuy\u1ec3n \u0111\u1ed5i n\u00f3 th\u00e0nh nhi\u1ec7t n\u0103ng.  V\u1eadt li\u1ec7u x\u1ed1p, nh\u01b0 len, b\u00f4ng, cao su x\u1ed1p, v\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i nh\u1ef1a \u0111\u1eb7c bi\u1ec7t, th\u01b0\u1eddng l\u00e0 nh\u1eefng ch\u1ea5t h\u1ea5p th\u1ee5 \u00e2m thanh hi\u1ec7u qu\u1ea3. \u0110\u1ed9 d\u00e0y v\u00e0 m\u1eadt \u0111\u1ed9 c\u1ee7a v\u1eadt li\u1ec7u c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u00e2m.<\/p>\n<h3>B\u1ec1 m\u1eb7t ph\u1ea3n x\u1ea1<\/h3>\n<p>B\u1ec1 m\u1eb7t c\u1ee9ng v\u00e0 nh\u1eb5n, nh\u01b0 kim lo\u1ea1i, k\u00ednh, v\u00e0 b\u00ea t\u00f4ng, c\u00f3 xu h\u01b0\u1edbng ph\u1ea3n x\u1ea1 s\u00f3ng si\u00eau \u00e2m. G\u00f3c t\u1edbi c\u1ee7a s\u00f3ng si\u00eau \u00e2m c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn g\u00f3c ph\u1ea3n x\u1ea1. Hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 n\u00e0y \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00e1c k\u1ef9 thu\u1eadt si\u00eau \u00e2m nh\u01b0 ki\u1ec3m tra khuy\u1ebft t\u1eadt trong v\u1eadt li\u1ec7u ho\u1eb7c h\u00ecnh \u1ea3nh y t\u1ebf.<\/p>\n<h3>Kho\u1ea3ng c\u00e1ch v\u00e0 m\u00f4i tr\u01b0\u1eddng lan truy\u1ec1n<\/h3>\n<p>C\u01b0\u1eddng \u0111\u1ed9 s\u00f3ng si\u00eau \u00e2m gi\u1ea3m d\u1ea7n theo kho\u1ea3ng c\u00e1ch do s\u1ef1 ph\u00e2n t\u00e1n n\u0103ng l\u01b0\u1ee3ng. M\u00f4i tr\u01b0\u1eddng lan truy\u1ec1n c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. Kh\u00f4ng kh\u00ed, v\u1edbi m\u1eadt \u0111\u1ed9 th\u1ea5p, l\u00e0m suy gi\u1ea3m s\u00f3ng si\u00eau \u00e2m nhanh h\u01a1n so v\u1edbi n\u01b0\u1edbc ho\u1eb7c ch\u1ea5t r\u1eafn.<\/p>\n<h3>Nhi\u1ec5u x\u1ea1 v\u00e0 t\u00e1n x\u1ea1<\/h3>\n<p>Khi s\u00f3ng si\u00eau \u00e2m g\u1eb7p c\u00e1c v\u1eadt th\u1ec3 c\u00f3 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c nh\u1ecf h\u01a1n b\u01b0\u1edbc s\u00f3ng, ch\u00fang b\u1ecb nhi\u1ec5u x\u1ea1 v\u00e0 t\u00e1n x\u1ea1 theo nhi\u1ec1u h\u01b0\u1edbng kh\u00e1c nhau.  \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a s\u00f3ng theo h\u01b0\u1edbng ban \u0111\u1ea7u.<\/p>\n<h3>B\u1ea3ng so s\u00e1nh kh\u1ea3 n\u0103ng c\u1ea3n tr\u1edf s\u00f3ng si\u00eau \u00e2m c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>V\u1eadt li\u1ec7u<\/th>\n<th>Kh\u1ea3 n\u0103ng c\u1ea3n tr\u1edf<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u00f4ng kh\u00ed<\/td>\n<td>Th\u1ea5p<\/td>\n<td>S\u00f3ng si\u00eau \u00e2m suy gi\u1ea3m nhanh ch\u00f3ng do m\u1eadt \u0111\u1ed9 th\u1ea5p.<\/td>\n<\/tr>\n<tr>\n<td>N\u01b0\u1edbc<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Suy gi\u1ea3m \u00edt h\u01a1n so v\u1edbi kh\u00f4ng kh\u00ed.<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e9p<\/td>\n<td>Cao<\/td>\n<td>Ph\u1ea3n x\u1ea1 s\u00f3ng si\u00eau \u00e2m r\u1ea5t t\u1ed1t.<\/td>\n<\/tr>\n<tr>\n<td>Cao su x\u1ed1p<\/td>\n<td>Cao<\/td>\n<td>H\u1ea5p th\u1ee5 s\u00f3ng si\u00eau \u00e2m hi\u1ec7u qu\u1ea3.<\/td>\n<\/tr>\n<tr>\n<td>Len<\/td>\n<td>Cao<\/td>\n<td>H\u1ea5p th\u1ee5 s\u00f3ng si\u00eau \u00e2m hi\u1ec7u qu\u1ea3.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ea2nh h\u01b0\u1edfng c\u1ee7a t\u1ea7n s\u1ed1<\/h3>\n<p>T\u1ea7n s\u1ed1 c\u1ee7a s\u00f3ng si\u00eau \u00e2m c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng b\u1ecb c\u1ea3n tr\u1edf. S\u00f3ng si\u00eau \u00e2m t\u1ea7n s\u1ed1 cao b\u1ecb h\u1ea5p th\u1ee5 nhanh h\u01a1n trong m\u00f4i tr\u01b0\u1eddng so v\u1edbi s\u00f3ng t\u1ea7n s\u1ed1 th\u1ea5p.  V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c y t\u1ebf, s\u00f3ng si\u00eau \u00e2m t\u1ea7n s\u1ed1 cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 quan s\u00e1t c\u00e1c c\u1ea5u tr\u00fac b\u1ec1 m\u1eb7t, trong khi s\u00f3ng t\u1ea7n s\u1ed1 th\u1ea5p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 quan s\u00e1t c\u00e1c c\u1ea5u tr\u00fac s\u00e2u h\u01a1n b\u00ean trong c\u01a1 th\u1ec3.<\/p>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c y\u1ebfu t\u1ed1 c\u1ea3n tr\u1edf s\u00f3ng si\u00eau \u00e2m, t\u1eeb \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u \u0111\u1ebfn t\u1ea7n s\u1ed1 s\u00f3ng, l\u00e0 r\u1ea5t quan tr\u1ecdng cho vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 si\u00eau \u00e2m hi\u1ec7u qu\u1ea3. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 t\u1ea7n s\u1ed1 ph\u00f9 h\u1ee3p s\u1ebd t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng, t\u1eeb ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y \u0111\u1ebfn ch\u1ea9n \u0111o\u00e1n y t\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u00f3ng si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Tuy nhi\u00ean, kh\u1ea3 n\u0103ng lan truy\u1ec1n c\u1ee7a s\u00f3ng si\u00eau \u00e2m b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1<\/p>\n","protected":false},"author":1,"featured_media":26471,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43852","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=43852"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43852\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26471"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}