{"id":57146,"date":"2023-04-25T14:59:42","date_gmt":"2023-04-25T19:59:42","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-an-audio-transducer\/"},"modified":"2025-01-27T06:16:56","modified_gmt":"2025-01-27T11:16:56","slug":"what-is-an-audio-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-an-audio-transducer\/","title":{"rendered":"Co jsou to audio sn\u00edma\u010de a p\u0159evodn\u00edky?"},"content":{"rendered":"<p>Audio p\u0159evodn\u00edk je za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159ev\u00e1d\u00ed energii z jedn\u00e9 formy na druhou, konkr\u00e9tn\u011b mezi akustickou energi\u00ed (zvukem) a elektrickou energi\u00ed.  Tento proces je obousm\u011brn\u00fd, co\u017e znamen\u00e1, \u017ee audio p\u0159evodn\u00edk m\u016f\u017ee zvuk p\u0159ev\u00e9st na elektrick\u00fd sign\u00e1l a naopak.  Jeho princip fungov\u00e1n\u00ed z\u00e1vis\u00ed na fyzik\u00e1ln\u00edch jevech, jako je piezoelektrick\u00fd efekt, elektromagnetick\u00e1 indukce nebo zm\u011bna odporu.  Pou\u017e\u00edvaj\u00ed se v \u0161irok\u00e9m spektru aplikac\u00ed, od reproduktor\u016f a mikrofon\u016f a\u017e po sofistikovan\u00e9 m\u011b\u0159ic\u00ed p\u0159\u00edstroje.<\/p>\n<h3>Druhy audio p\u0159evodn\u00edk\u016f<\/h3>\n<p>Audio p\u0159evodn\u00edky lze rozd\u011blit do n\u011bkolika kategori\u00ed podle principu jejich fungov\u00e1n\u00ed a zam\u00fd\u0161len\u00e9ho pou\u017eit\u00ed. Nej\u010dast\u011bj\u0161\u00edmi typy jsou:<\/p>\n<ul>\n<li><strong>Elektromagnetick\u00e9 p\u0159evodn\u00edky:<\/strong> Tyto p\u0159evodn\u00edky vyu\u017e\u00edvaj\u00ed princip elektromagnetick\u00e9 indukce. V reproduktorech pohybuje se c\u00edvka v magnetick\u00e9m poli, \u010d\u00edm\u017e generuje zvuk. V mikrofonu naopak zvukov\u00e9 vlny pohybuj\u00ed c\u00edvkou v magnetick\u00e9m poli a indukuj\u00ed elektrick\u00fd sign\u00e1l.<\/li>\n<li><strong>Piezoelektrick\u00e9 p\u0159evodn\u00edky:<\/strong> Tyto p\u0159evodn\u00edky vyu\u017e\u00edvaj\u00ed piezoelektrick\u00fd efekt, kdy se materi\u00e1l deformuje p\u0159i p\u016fsoben\u00ed elektrick\u00e9ho pole a naopak.  \u010casto se pou\u017e\u00edvaj\u00ed v mal\u00fdch reproduktorech, senzorech a mikrofonech.<\/li>\n<li><strong>Kondenz\u00e1torov\u00e9 mikrofony:<\/strong> Tyto mikrofony pou\u017e\u00edvaj\u00ed kondenz\u00e1tor, jeho\u017e kapacita se m\u011bn\u00ed v z\u00e1vislosti na tlaku zvukov\u00e9ho vln\u011bn\u00ed. Zm\u011bna kapacity se pak p\u0159ev\u00e1d\u00ed na elektrick\u00fd sign\u00e1l.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ p\u0159evodn\u00edku<\/th>\n<th>Princip fungov\u00e1n\u00ed<\/th>\n<th>Aplikace<\/th>\n<th>V\u00fdhody<\/th>\n<th>Nev\u00fdhody<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Elektromagnetick\u00fd<\/td>\n<td>Elektromagnetick\u00e1 indukce<\/td>\n<td>Reproduktory, mikrofony<\/td>\n<td>Robustn\u00ed konstrukce, vysok\u00e1 \u00fa\u010dinnost<\/td>\n<td>Obvykle v\u011bt\u0161\u00ed rozm\u011bry, vy\u0161\u0161\u00ed hmotnost<\/td>\n<\/tr>\n<tr>\n<td>Piezoelektrick\u00fd<\/td>\n<td>Piezoelektrick\u00fd efekt<\/td>\n<td>Mal\u00e9 reproduktory, senzory, mikrofony<\/td>\n<td>Mal\u00e9 rozm\u011bry, n\u00edzk\u00e1 hmotnost<\/td>\n<td>Ni\u017e\u0161\u00ed \u00fa\u010dinnost, omezen\u00fd kmito\u010dtov\u00fd rozsah<\/td>\n<\/tr>\n<tr>\n<td>Kondenz\u00e1torov\u00fd<\/td>\n<td>Zm\u011bna kapacity kondenz\u00e1toru<\/td>\n<td>Mikrofony<\/td>\n<td>Vysok\u00e1 citlivost, \u0161irok\u00fd kmito\u010dtov\u00fd rozsah<\/td>\n<td>Vy\u017eaduje nap\u00e1jen\u00ed, k\u0159eh\u010d\u00ed konstrukce<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Parametry audio p\u0159evodn\u00edk\u016f<\/h3>\n<p>Kl\u00ed\u010dov\u00e9 parametry, kter\u00e9 charakterizuj\u00ed v\u00fdkonnost audio p\u0159evodn\u00edku, zahrnuj\u00ed:<\/p>\n<ul>\n<li><strong>Frekven\u010dn\u00ed rozsah:<\/strong>  Ur\u010duje rozsah sly\u0161iteln\u00fdch frekvenc\u00ed, kter\u00e9 p\u0159evodn\u00edk dok\u00e1\u017ee reprodukovat nebo detekovat.<\/li>\n<li><strong>Citlivost:<\/strong> Vyjad\u0159uje pom\u011br mezi vstupn\u00edm sign\u00e1lem (zvukov\u00fdm tlakem pro mikrofon, elektrick\u00fdm v\u00fdkonem pro reproduktor) a v\u00fdstupn\u00edm sign\u00e1lem.<\/li>\n<li><strong>Impedance:<\/strong>  Vyjad\u0159uje odpor p\u0159evodn\u00edku v\u016f\u010di pr\u016fchodu elektrick\u00e9ho proudu.<\/li>\n<li><strong>Sm\u011brovost:<\/strong> Ur\u010duje, jak p\u0159evodn\u00edk reaguje na zvuk p\u0159ich\u00e1zej\u00edc\u00ed z r\u016fzn\u00fdch sm\u011br\u016f.<\/li>\n<\/ul>\n<h3>Aplikace audio p\u0159evodn\u00edk\u016f<\/h3>\n<p>Audio p\u0159evodn\u00edky nach\u00e1zej\u00ed uplatn\u011bn\u00ed v \u0161irok\u00e9 \u0161k\u00e1le za\u0159\u00edzen\u00ed a technologi\u00ed:<\/p>\n<ul>\n<li><strong>Reproduktory:<\/strong> P\u0159ev\u00e1d\u011bj\u00ed elektrick\u00fd sign\u00e1l na zvukov\u00e9 vlny.<\/li>\n<li><strong>Mikrofony:<\/strong> P\u0159ev\u00e1d\u011bj\u00ed zvukov\u00e9 vlny na elektrick\u00fd sign\u00e1l.<\/li>\n<li><strong>Sluch\u00e1tka:<\/strong> Miniaturn\u00ed reproduktory pro individu\u00e1ln\u00ed poslech.<\/li>\n<li><strong>Ultrazvukov\u00e9 senzory:<\/strong> Vyu\u017e\u00edvaj\u00ed ultrazvukov\u00e9 frekvence pro m\u011b\u0159en\u00ed vzd\u00e1lenosti, detekci objekt\u016f a dal\u0161\u00ed aplikace.  V tomto sektoru hraj\u00ed d\u016fle\u017eitou roli firmy jako nap\u0159\u00edklad Beijing Ultrasonic, kter\u00e1 se specializuje na v\u00fdrobu vysoce kvalitn\u00edch ultrazvukov\u00fdch sn\u00edma\u010d\u016f pro pr\u016fmyslov\u00e9 aplikace.<\/li>\n<li><strong>M\u011b\u0159ic\u00ed p\u0159\u00edstroje:<\/strong>  Pou\u017e\u00edvaj\u00ed se k m\u011b\u0159en\u00ed akustick\u00fdch vlastnost\u00ed prost\u0159ed\u00ed.<\/li>\n<\/ul>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee audio p\u0159evodn\u00edky jsou nezbytnou sou\u010d\u00e1st\u00ed mnoha technologi\u00ed a za\u0159\u00edzen\u00ed, kter\u00e9 pou\u017e\u00edv\u00e1me v ka\u017edodenn\u00edm \u017eivot\u011b.  D\u00edky jejich rozmanitosti a neust\u00e1l\u00e9mu v\u00fdvoji se st\u00e1vaj\u00ed st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00edmi v \u0161irok\u00e9m spektru aplikac\u00ed, od b\u011b\u017en\u00e9 z\u00e1bavy a\u017e po vysoce specializovan\u00e9 pr\u016fmyslov\u00e9 procesy.  Pochopen\u00ed jejich princip\u016f fungov\u00e1n\u00ed a parametr\u016f je kl\u00ed\u010dov\u00e9 pro optim\u00e1ln\u00ed v\u00fdb\u011br a pou\u017eit\u00ed t\u011bchto d\u016fle\u017eit\u00fdch komponent.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Audio p\u0159evodn\u00edk je za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159ev\u00e1d\u00ed energii z jedn\u00e9 formy na druhou, konkr\u00e9tn\u011b mezi akustickou energi\u00ed (zvukem) a elektrickou energi\u00ed. Tento proces je obousm\u011brn\u00fd, co\u017e znamen\u00e1, \u017ee audio p\u0159evodn\u00edk m\u016f\u017ee zvuk p\u0159ev\u00e9st na elektrick\u00fd sign\u00e1l a naopak. Jeho princip fungov\u00e1n\u00ed z\u00e1vis\u00ed na fyzik\u00e1ln\u00edch jevech, jako je piezoelektrick\u00fd efekt, elektromagnetick\u00e1 indukce nebo zm\u011bna odporu. Pou\u017e\u00edvaj\u00ed se<\/p>\n","protected":false},"author":1,"featured_media":26935,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-57146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57146","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=57146"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57146\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26935"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=57146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=57146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=57146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}