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Scope: 律歷上 Request type: Paragraph
Condition 1: Contains text "天效以景地效以響即律也" Matched:1.
Total 1 paragraphs. Page 1 of 1.

律歷上

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19 律歷上:
夫五音生於陰陽,分為十二律,轉生六十,皆所以紀斗氣,效物類也。天效以景,地效以響,即律也。陰陽和則景至,律氣應則灰除。是故天子常以日冬夏至御前殿,合八能之士,陳八音,聽樂均,度晷景,候鍾律,權土灰,放陰陽。冬至陽氣應,則樂均清,景長極,黃鍾通,土灰輕而衡仰。夏至陰氣應,則樂均濁,景短極,蕤賓通,土灰重而衡低。進退於先後五日之中,八能各以候狀聞,太史封上。效則和,否則占。候氣之法,為室三重,戶閉,塗釁必周,密布緹縵。室中以木為案,每律各一,內庳外高,從其方位,加律其上,以葭莩灰抑其內端,案曆而候之。氣至者灰去。其為氣所動者其灰散,人及風所動者其灰聚。殿中候,用玉律十二。惟二至乃候靈臺,用竹律六十。候日如其曆。

Total 1 paragraphs. Page 1 of 1.