{"id":49612,"date":"2023-04-21T15:53:18","date_gmt":"2023-04-21T20:53:18","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-create-ultrasonic-sound-at-home\/"},"modified":"2025-01-21T07:15:27","modified_gmt":"2025-01-21T12:15:27","slug":"how-to-create-ultrasonic-sound-at-home","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-create-ultrasonic-sound-at-home\/","title":{"rendered":"T\u1ef1 t\u1ea1o \u00e2m thanh si\u00eau \u00e2m t\u1ea1i nh\u00e0: M\u1eb9o & H\u01b0\u1edbng d\u1eabn"},"content":{"rendered":"

\u00c2m thanh si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, t\u1eeb vi\u1ec7c \u0111u\u1ed5i c\u00f4n tr\u00f9ng \u0111\u1ebfn l\u00e0m s\u1ea1ch \u0111\u1ed3 trang s\u1ee9c. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch t\u1ea1o ra \u00e2m thanh si\u00eau \u00e2m t\u1ea1i nh\u00e0 b\u1eb1ng nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 th\u1ef1c hi\u1ec7n.<\/p>\n

S\u1eed d\u1ee5ng m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/h3>\n

Ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra \u00e2m thanh si\u00eau \u00e2m l\u00e0 s\u1eed d\u1ee5ng m\u1ea1ch \u0111i\u1ec7n t\u1eed v\u1edbi c\u00e1c linh ki\u1ec7n nh\u01b0 b\u1ed9 dao \u0111\u1ed9ng, transistor v\u00e0 loa si\u00eau \u00e2m (transducer). B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm mua c\u00e1c b\u1ed9 kit t\u1ea1o s\u00f3ng si\u00eau \u00e2m \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf s\u1eb5n tr\u00ean th\u1ecb tr\u01b0\u1eddng ho\u1eb7c t\u1ef1 l\u1eafp r\u00e1p m\u1ea1ch theo s\u01a1 \u0111\u1ed3 h\u01b0\u1edbng d\u1eabn. Vi\u1ec7c s\u1eed d\u1ee5ng m\u1ea1ch \u0111i\u1ec7n t\u1eed cho ph\u00e9p b\u1ea1n ki\u1ec3m so\u00e1t t\u1ea7n s\u1ed1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a s\u00f3ng si\u00eau \u00e2m m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n

T\u1eadn d\u1ee5ng loa piezo<\/h3>\n

Loa piezo l\u00e0 m\u1ed9t lo\u1ea1i loa nh\u1ecf g\u1ecdn, gi\u00e1 th\u00e0nh r\u1ebb v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra \u00e2m thanh \u1edf t\u1ea7n s\u1ed1 cao, bao g\u1ed3m c\u1ea3 si\u00eau \u00e2m. B\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i loa piezo v\u1edbi m\u1ed9t m\u1ea1ch dao \u0111\u1ed9ng \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m. Tuy nhi\u00ean, \u00e2m thanh t\u1ea1o ra t\u1eeb loa piezo th\u01b0\u1eddng c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 th\u1ea5p h\u01a1n so v\u1edbi m\u1ea1ch \u0111i\u1ec7n t\u1eed chuy\u00ean d\u1ee5ng.<\/p>\n

S\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m v\u00e0 m\u00e1y t\u00ednh<\/h3>\n

M\u1ed9t s\u1ed1 ph\u1ea7n m\u1ec1m m\u00e1y t\u00ednh c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra s\u00f3ng \u00e2m \u1edf t\u1ea7n s\u1ed1 si\u00eau \u00e2m th\u00f4ng qua card \u00e2m thanh. B\u1ea1n ch\u1ec9 c\u1ea7n k\u1ebft n\u1ed1i m\u00e1y t\u00ednh v\u1edbi m\u1ed9t loa c\u00f3 d\u1ea3i t\u1ea7n s\u1ed1 r\u1ed9ng \u0111\u1ec3 ph\u00e1t ra \u00e2m thanh. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00e1 \u0111\u01a1n gi\u1ea3n nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh si\u00eau \u00e2m t\u1ea1o ra ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng card \u00e2m thanh v\u00e0 loa.<\/p>\n\n\n\n\n\n\n\n
Ph\u01b0\u01a1ng ph\u00e1p<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
M\u1ea1ch \u0111i\u1ec7n t\u1eed<\/td>\nKi\u1ec3m so\u00e1t t\u1ed1t t\u1ea7n s\u1ed1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9<\/td>\nC\u1ea7n ki\u1ebfn th\u1ee9c \u0111i\u1ec7n t\u1eed c\u01a1 b\u1ea3n<\/td>\n<\/tr>\n
Loa piezo<\/td>\n\u0110\u01a1n gi\u1ea3n, gi\u00e1 r\u1ebb<\/td>\nC\u01b0\u1eddng \u0111\u1ed9 \u00e2m thanh th\u1ea5p<\/td>\n<\/tr>\n
Ph\u1ea7n m\u1ec1m m\u00e1y t\u00ednh<\/td>\nD\u1ec5 th\u1ef1c hi\u1ec7n<\/td>\nCh\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8ng d\u1ee5ng c\u1ee7a \u00e2m thanh si\u00eau \u00e2m t\u1ef1 t\u1ea1o<\/h3>\n

\u00c2m thanh si\u00eau \u00e2m t\u1ef1 t\u1ea1o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong m\u1ed9t s\u1ed1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 xua \u0111u\u1ed5i c\u00f4n tr\u00f9ng, l\u00e0m s\u1ea1ch \u0111\u1ed3 trang s\u1ee9c nh\u1ecf, ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m khoa h\u1ecdc \u0111\u01a1n gi\u1ea3n. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng vi\u1ec7c ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi \u00e2m thanh si\u00eau \u00e2m c\u01b0\u1eddng \u0111\u1ed9 cao trong th\u1eddi gian d\u00e0i c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i cho s\u1ee9c kh\u1ecfe.<\/p>\n

T\u1ea1o ra \u00e2m thanh si\u00eau \u00e2m t\u1ea1i nh\u00e0 kh\u00f4ng qu\u00e1 kh\u00f3 kh\u0103n n\u1ebfu b\u1ea1n \u00e1p d\u1ee5ng \u0111\u00fang ph\u01b0\u01a1ng ph\u00e1p. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng ki\u1ebfn th\u1ee9c c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1eaft \u0111\u1ea7u kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi th\u00fa v\u1ecb c\u1ee7a \u00e2m thanh si\u00eau \u00e2m. H\u00e3y lu\u00f4n c\u1ea9n tr\u1ecdng v\u00e0 t\u00ecm hi\u1ec3u k\u1ef9 v\u1ec1 an to\u00e0n khi l\u00e0m vi\u1ec7c v\u1edbi \u00e2m thanh si\u00eau \u00e2m.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c2m thanh si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, t\u1eeb vi\u1ec7c \u0111u\u1ed5i c\u00f4n tr\u00f9ng \u0111\u1ebfn l\u00e0m s\u1ea1ch \u0111\u1ed3 trang s\u1ee9c. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch t\u1ea1o ra \u00e2m thanh si\u00eau \u00e2m t\u1ea1i nh\u00e0<\/p>\n","protected":false},"author":1,"featured_media":26473,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-49612","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\/49612","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=49612"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/49612\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26473"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=49612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=49612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=49612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}