{"id":61986,"date":"2023-04-21T13:10:50","date_gmt":"2023-04-21T18:10:50","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-parametric-speaker\/"},"modified":"2025-01-27T06:03:39","modified_gmt":"2025-01-27T11:03:39","slug":"diy-parametric-speaker","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/diy-parametric-speaker\/","title":{"rendered":"DIY Parametrick\u00fd Reproduktor: N\u00e1vod a Tipy"},"content":{"rendered":"

DIY parametrick\u00fd reproduktor: pr\u016fvodce pro kutily<\/p>\n

Parametrick\u00e9 reproduktory nab\u00edzej\u00ed fascinuj\u00edc\u00ed mo\u017enost vytv\u00e1\u0159et vysoce sm\u011brovan\u00e9 zvukov\u00e9 pole s p\u0159esnou kontrolou prostorov\u00e9ho rozlo\u017een\u00ed zvuku. Na rozd\u00edl od konven\u010dn\u00edch reproduktor\u016f, kter\u00e9 \u0161\u00ed\u0159\u00ed zvuk v\u0161emi sm\u011bry, parametrick\u00e9 reproduktory vyu\u017e\u00edvaj\u00ed principu interference zvukov\u00fdch vln k vytvo\u0159en\u00ed \u00fazk\u00e9ho, c\u00edlen\u00e9ho paprsku zvuku. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na praktick\u00e9 aspekty sestaven\u00ed vlastn\u00edho parametrick\u00e9ho reproduktoru. Proces je n\u00e1ro\u010dn\u011bj\u0161\u00ed ne\u017e stavba b\u011b\u017en\u00e9ho reproduktoru, ale v\u00fdsledkem je unik\u00e1tn\u00ed za\u0159\u00edzen\u00ed s mnoha potenci\u00e1ln\u00edmi vyu\u017eit\u00edmi.<\/p>\n

Principy parametrick\u00e9ho reproduktoru<\/h3>\n

Parametrick\u00fd reproduktor vyu\u017e\u00edv\u00e1 ultrazvukov\u00e9 vlny k modulaci zvukov\u00fdch vln vn\u00edmateln\u00fdch lidsk\u00fdm uchem. Mal\u00e9, vysoce frekven\u010dn\u00ed piezoelektrick\u00e9 m\u011bni\u010de generuj\u00ed ultrazvukov\u00e9 vlny, kter\u00e9 jsou pot\u00e9 modulov\u00e1ny n\u00edzkofrekven\u010dn\u00edm audio sign\u00e1lem. Interference mezi ultrazvukov\u00fdmi vlnami a modulovan\u00fdm sign\u00e1lem vytv\u00e1\u0159\u00ed sly\u0161iteln\u00fd zvuk v \u00fazk\u00e9m paprsku. \u00dahel paprsku z\u00e1vis\u00ed na frekvenci ultrazvuku a vzd\u00e1lenosti od reproduktoru. V\u00fdkon parametrick\u00e9ho reproduktoru je obecn\u011b ni\u017e\u0161\u00ed ne\u017e u konven\u010dn\u00edch reproduktor\u016f, ale jeho sm\u011brovost je jeho nejv\u011bt\u0161\u00ed v\u00fdhodou.<\/p>\n

Komponenty pot\u0159ebn\u00e9 pro stavbu<\/h3>\n

Sestaven\u00ed parametrick\u00e9ho reproduktoru vy\u017eaduje specifick\u00e9 komponenty. Kl\u00ed\u010dovou sou\u010d\u00e1st\u00ed jsou piezoelektrick\u00e9 m\u011bni\u010de, kter\u00e9 mus\u00ed b\u00fdt schopny generovat ultrazvukov\u00e9 vlny dostate\u010dn\u00e9 intenzity. Dal\u0161\u00ed nezbytn\u00e9 sou\u010d\u00e1sti zahrnuj\u00ed:<\/p>\n\n\n\n\n\n\n\n\n\n\n
Komponent<\/th>\nPopis<\/th>\nZdroj\/Dodavatel<\/th>\n<\/tr>\n<\/thead>\n
Piezoelektrick\u00e9 m\u011bni\u010de (vysokofrekven\u010dn\u00ed)<\/td>\nPro generov\u00e1n\u00ed ultrazvukov\u00fdch vln. Je nutn\u00e9 zvolit m\u011bni\u010de s dostate\u010dnou frekvenc\u00ed a v\u00fdkonem.<\/td>\nSpecializovan\u00ed dodavatel\u00e9 elektronick\u00fdch sou\u010d\u00e1stek<\/td>\n<\/tr>\n
Zesilova\u010d<\/td>\nPro zes\u00edlen\u00ed audio sign\u00e1lu.<\/td>\nElektronick\u00e9 obchody<\/td>\n<\/tr>\n
Mikroprocesor\/Mikro\u0159adi\u010d (voliteln\u00e9)<\/td>\nPro pokro\u010dil\u00e9 \u0159\u00edzen\u00ed a nastaven\u00ed parametr\u016f.<\/td>\nElektronick\u00e9 obchody<\/td>\n<\/tr>\n
Nap\u00e1jec\u00ed zdroj<\/td>\nPro nap\u00e1jen\u00ed v\u0161ech komponent.<\/td>\nElektronick\u00e9 obchody<\/td>\n<\/tr>\n
Obvod pro modulaci<\/td>\nPro modulaci ultrazvukov\u00fdch vln audio sign\u00e1lem.<\/td>\nM\u016f\u017ee b\u00fdt navr\u017een dle pot\u0159eby<\/td>\n<\/tr>\n
Kryt<\/td>\nPro ochranu komponent.<\/td>\nLze pou\u017e\u00edt 3D tisk, d\u0159evo apod.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

N\u00e1vrh a konstrukce<\/h3>\n

Konstrukce parametrick\u00e9ho reproduktoru vy\u017eaduje pe\u010dliv\u00fd n\u00e1vrh. Uspo\u0159\u00e1d\u00e1n\u00ed piezoelektrick\u00fdch m\u011bni\u010d\u016f a jejich vz\u00e1jemn\u00e1 vzd\u00e1lenost ovliv\u0148uj\u00ed \u0161\u00ed\u0159ku a tvar zvukov\u00e9 paprsku. Pro optim\u00e1ln\u00ed v\u00fdkon je nutn\u00e9 zvolit vhodnou frekvenci ultrazvuku a amplitudu modulovan\u00e9ho sign\u00e1lu. Software pro simulace \u0161\u00ed\u0159en\u00ed zvuku m\u016f\u017ee b\u00fdt u\u017eite\u010dn\u00fd pro optimalizaci n\u00e1vrhu. Tvar krytu je tak\u00e9 d\u016fle\u017eit\u00fd pro minimalizaci ne\u017e\u00e1douc\u00edch odraz\u016f a interferenc\u00ed.<\/p>\n

Testov\u00e1n\u00ed a lad\u011bn\u00ed<\/h3>\n

Po sestaven\u00ed parametrick\u00e9ho reproduktoru je nutn\u00e9 jej d\u016fkladn\u011b otestovat a vyladit. Testov\u00e1n\u00ed zahrnuje m\u011b\u0159en\u00ed \u0161\u00ed\u0159ky a intenzity zvukov\u00e9 paprsku p\u0159i r\u016fzn\u00fdch frekvenc\u00edch a \u00farovn\u00edch hlasitosti. Lad\u011bn\u00ed parametr\u016f reproduktoru m\u016f\u017ee vy\u017eadovat opakovan\u00e9 \u00fapravy. D\u016fle\u017eit\u00e9 je tak\u00e9 ov\u011b\u0159it, zda reproduktor generuje zvuk bez ne\u017e\u00e1douc\u00edch ru\u0161en\u00ed a zkreslen\u00ed.<\/p>\n

Mo\u017en\u00e9 probl\u00e9my a \u0159e\u0161en\u00ed<\/h3>\n

B\u011bhem konstrukce a testov\u00e1n\u00ed se mohou objevit probl\u00e9my, jako je n\u00edzk\u00e1 intenzita zvuku, nestabiln\u00ed paprsek, nebo ne\u017e\u00e1douc\u00ed \u0161um. Tyto probl\u00e9my mohou b\u00fdt zp\u016fsobeny nespr\u00e1vnou konfigurac\u00ed komponent, \u0161patnou kvalitou sou\u010d\u00e1stek, nebo interferenc\u00ed v okol\u00ed. \u0158e\u0161en\u00ed t\u011bchto probl\u00e9m\u016f vy\u017eaduje systematick\u00fd p\u0159\u00edstup a pe\u010dliv\u00e9 analyzov\u00e1n\u00ed p\u0159\u00ed\u010din.<\/p>\n

Z\u00e1v\u011brem, sestaven\u00ed DIY parametrick\u00e9ho reproduktoru je n\u00e1ro\u010dn\u00fd, ale z\u00e1rove\u0148 velmi obohacuj\u00edc\u00ed projekt. Vy\u017eaduje znalosti elektroniky, akustiky a programov\u00e1n\u00ed (v p\u0159\u00edpad\u011b pou\u017eit\u00ed mikroprocesoru). V\u00fdsledek v\u0161ak stoj\u00ed za n\u00e1mahu \u2013 unik\u00e1tn\u00ed za\u0159\u00edzen\u00ed s fascinuj\u00edc\u00edmi vlastnostmi a \u0161irok\u00fdmi mo\u017enostmi vyu\u017eit\u00ed. Proces je pln\u00fd experiment\u016f a optimalizace, proto je d\u016fle\u017eit\u00e9 m\u00edt trp\u011blivost a vytrvalost.<\/p>\n","protected":false},"excerpt":{"rendered":"

DIY parametrick\u00fd reproduktor: pr\u016fvodce pro kutily Parametrick\u00e9 reproduktory nab\u00edzej\u00ed fascinuj\u00edc\u00ed mo\u017enost vytv\u00e1\u0159et vysoce sm\u011brovan\u00e9 zvukov\u00e9 pole s p\u0159esnou kontrolou prostorov\u00e9ho rozlo\u017een\u00ed zvuku. Na rozd\u00edl od konven\u010dn\u00edch reproduktor\u016f, kter\u00e9 \u0161\u00ed\u0159\u00ed zvuk v\u0161emi sm\u011bry, parametrick\u00e9 reproduktory vyu\u017e\u00edvaj\u00ed principu interference zvukov\u00fdch vln k vytvo\u0159en\u00ed \u00fazk\u00e9ho, c\u00edlen\u00e9ho paprsku zvuku. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na praktick\u00e9 aspekty sestaven\u00ed vlastn\u00edho parametrick\u00e9ho<\/p>\n","protected":false},"author":1,"featured_media":26477,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-61986","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\/61986","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=61986"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/61986\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26477"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=61986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=61986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=61986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}