{"id":1850,"date":"2017-05-27T00:05:03","date_gmt":"2017-05-26T16:05:03","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=1850"},"modified":"2017-08-01T09:43:13","modified_gmt":"2017-08-01T01:43:13","slug":"piano_bedt_equal_temperaments","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/piano_bedt_equal_temperaments\/","title":{"rendered":"\u92fc\u7434-\u6c42\u5e73\u5747\u7387\u62cd\u983b"},"content":{"rendered":"
\"\u92fc\u7434-\u8abf\u5f8b\"<\/a>
\u92fc\u7434-\u8abf\u5f8b<\/figcaption><\/figure>\n

\u92fc\u7434-\u6c42\u5e73\u5747\u7387\u62cd\u983b<\/p>\n

 <\/p>\n

1.\u6c42\u5e73\u5747\u5f8b\u5404\u97f3\u7684\u65e2\u5b9a\u7cbe\u78ba\u7684\u983b\u7387<\/p>\n

2.\u719f\u8a18\u5e38\u7528\u97f3\u7a0b\u7684\u983b\u7387\u6bd4<\/p>\n

3.\u88ab\u8abf\u97f3\u653e\u5728\u88ab\u6e1b\u6578,\u88ab\u6aa2\u97f3\u653e\u5728\u6e1b\u6578\u4e0a<\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u97f3\u7a0b<\/td>\n\u97f3\u540d<\/td>\n\u8ae7\u97f3\u6bd4<\/td>\n<\/tr>\n
\u540c\u5ea6(\u4e00\u5ea6)<\/td>\nC<\/td>\n1<\/td>\n<\/tr>\n
\u5c0f\u4e09\u5ea6<\/td>\nd<\/sup>E<\/td>\n6\/5<\/td>\n<\/tr>\n
\u5927\u4e09\u5ea6<\/td>\nE<\/td>\n5\/4<\/td>\n<\/tr>\n
\u7d14\u56db\u5ea6<\/td>\nF<\/td>\n4\/3<\/td>\n<\/tr>\n
\u7d14\u4e94\u5ea6<\/td>\nG<\/td>\n3\/2<\/td>\n<\/tr>\n
\u5c0f\u516d\u5ea6<\/td>\nb<\/sup>A<\/td>\n8\/5<\/td>\n<\/tr>\n
\u5927\u516d\u5ea6<\/td>\nA<\/td>\n5\/3<\/td>\n<\/tr>\n
\u516b\u5ea6<\/td>\nC<\/td>\n2\/1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u4f8b\u6c42\u5e73\u5747\u7387\u56db\u5ea6\u97f3\u7a0ba-d1 <\/sup>\u7684\u983b\u5f8b<\/p>\n

\u5df2\u77e537a=220Hz<\/p>\n

42d1<\/sup>=a*(12<\/sup>\u221a2)5<\/sup>=220*1.0594635<\/sup>=293.66Hz<\/p>\n

\u7d14\u56db\u5ea6\u7684\u8ae7\u97f3\u6bd44\/3<\/p>\n

d1<\/sup>*3-a*4<\/p>\n

=293.66*3-220*4<\/p>\n

=880.98-880<\/p>\n

=0.98\u62cd\/\u79d2<\/p>\n

 <\/p>\n

\u4f8b\u6c42\u5e73\u5747\u5f8ba\u4e0a\u884c\u4e94\u5ea6e1<\/sup>\u7684\u62cd\u983b<\/p>\n

\u5df2\u77e537a=220Hz<\/p>\n

44 e1<\/sup>=37a* (12<\/sup>\u221a2)7<\/sup>=220*1.0594637<\/sup>=329.63Hz<\/p>\n

\u7d14\u4e94\u5ea6\u7684\u8ae7\u97f3\u6bd43\/2<\/p>\n

e1<\/sup>*2-a*3<\/p>\n

=329.63*2-220*3<\/p>\n

=659.26-660<\/p>\n

=-0.74\u62cd\/\u79d2<\/p>\n

 <\/p>\n

\u4f8b\u6c42\u5e73\u5747\u5f8b37a-33f\u5927\u4e09\u5ea6\u97f3\u7a0b\u7684\u62cd\u983b<\/p>\n

\u5df2\u77e537a=220Hz<\/p>\n

33f=37a\/ (12<\/sup>\u221a2)4<\/sup>=220\/1.0594634<\/sup>=174-.61Hz<\/p>\n

\u5927\u4e09\u5ea6\u8ae7\u6bd45\/4<\/p>\n

f*5-a*4<\/p>\n

=174.61*5-220*4<\/p>\n

=-6.95\u62cd\/\u79d2<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

\u4f8b\u5e73\u5747\u5f8b37a-46#<\/sup>f1<\/sup>\u5927\u516d\u5ea6\u97f3\u7a0b\u7684\u62cd\u983b<\/p>\n

\u5df2\u77e537a=220Hz<\/p>\n

46#<\/sup>f1<\/sup>=37a* (12<\/sup>\u221a2)9<\/sup>=220*1.0594639<\/sup>=369.99Hz<\/p>\n

\u5df2\u77e5\u5927\u516d\u5ea6\u8ae7\u97f3\u6bd45\/3<\/p>\n

46#<\/sup>f1<\/sup>*3–<\/sup>37a*5<\/p>\n

=369.99*3-220*5<\/p>\n

=1109.97-1100<\/p>\n

=9.97\u62cd\/\u79d2<\/p>\n

 <\/p>\n

\u4f8b\u5e73\u5747\u5f8b\u4e94\u5ea6\u97f3\u7a0bf-c1<\/sup>\u7684\u62cd\u983b<\/p>\n

\u5df2\u77e537a=220Hz<\/p>\n

33f=37a\/(12<\/sup>\u221a2)4<\/sup>=220*1.0594634<\/sup>=174.61Hz<\/p>\n

40c1=<\/sup>37a*(12<\/sup>\u221a2)3<\/sup>=220*1.0594633<\/sup>=261.63Hz<\/p>\n

\u5df2\u77e5\u7d14\u4e94\u5ea6\u8ae7\u97f3\u6bd43\/2<\/p>\n

40c1<\/sup>*2–<\/sup>33f*3<\/p>\n

=261.63*2-174.61*3<\/p>\n

=523.26-523.83<\/p>\n

=-0.57\u62cd\/\u79d2<\/p>\n

 <\/p>\n

\u4f8b\u5e73\u5747\u5f8b\u4e94\u5ea6\u97f3\u7a0bc1-<\/sup>f\u7684\u62cd\u983b<\/p>\n

\u5df2\u77e537a=220Hz<\/p>\n

40c1=<\/sup>37a*(12<\/sup>\u221a2)3<\/sup>=220*1.0594633<\/sup>=261.63Hz<\/p>\n

33f=37a\/(12<\/sup>\u221a2)4<\/sup>=220*1.0594634<\/sup>=174.61Hz<\/p>\n

\u5df2\u77e5\u7d14\u4e94\u5ea6\u8ae7\u97f3\u6bd43\/2<\/p>\n

33f*3-40c1<\/sup>*2<\/p>\n

=174.61*3-261.63*2<\/p>\n

=523.83-523.26<\/p>\n

=0.57\u62cd\/\u79d2<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u92fc\u7434-\u6c42\u5e73\u5747\u7387\u62cd\u983b   1.\u6c42\u5e73\u5747\u5f8b\u5404\u97f3\u7684\u65e2\u5b9a\u7cbe\u78ba\u7684\u983b\u7387 2.\u719f\u8a18\u5e38\u7528\u97f3\u7a0b\u7684\u983b\u7387\u6bd4 3.\u88ab\u8abf\u97f3\u653e\u5728\u88ab … <\/p>\n

\u7e7c\u7e8c\u95b1\u8b80 \u92fc\u7434-\u6c42\u5e73\u5747\u7387\u62cd\u983b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[26],"class_list":["post-1850","post","type-post","status-publish","format-standard","hentry","category-piano","tag-piano","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/1850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=1850"}],"version-history":[{"count":2,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/1850\/revisions"}],"predecessor-version":[{"id":1852,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/1850\/revisions\/1852"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=1850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=1850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=1850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}