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'","D、E、F（高一個八度）","空白鍵（按住）","延音踏板",[77],"看的是按鍵的位置，不是上面印的字母。用法文 AZERTY 或德文 QWERTZ 鍵盤時，按同樣位置的鍵就好——鋼琴的琴鍵上會顯示你鍵盤配置的字母。",{"h2":79,"p":80,"table":82},"第一批可以彈的歌",[81],"在起始八度彈，也就是 A 是中央 C 的位置。每一組是一個樂句，組和組之間停一下。",[83,86,89,92],[84,85],"歌曲","按鍵",[87,88],"小星星","A A G G · H H G · F F D D · S S A",[90,91],"瑪莉有隻小綿羊","D S A S · D D D · S S S · D G G",[93,94],"快樂頌（貝多芬）","D D F G · G F D S · A A S D · D S S",{"h2":96,"list":97,"after":104},"音階和和弦",[98,99,100,101,102,103],"**C 大調音階**：A S D F G H J K——從 C 到 C 的全部白鍵。","**C 大三和弦**（C、E、G）：同時按 **A D G**。","**F 大三和弦**（F、A、C）：**F H K**。","**G 大三和弦**（G、B、D）：**G J L**。","**A 小三和弦**（A、C、E）：**H K ;**","C、Am、F、G 這四個和弦就能彈非常多流行歌。試試照 **C – G – Am – F** 的順序彈。",[105],"大部分筆電鍵盤一次只能偵測幾個按鍵，太大的和弦可能會少一個音。三個音的和弦通常沒問題。",{"h2":107,"list":108},"在筆電上彈得更好",[109,110,111,112,113],"**打開節拍器**，從慢的開始，大約 60–80 BPM。","**按住空白鍵**彈出圓滑的連音——音會像踩著延音踏板一樣連在一起。放開就會停掉。","**用 Z 和 X** 切到更高或更低的八度，彈低音線和高音旋律。","**有線耳機**能讓聲音跟上手指；藍牙會有延遲。","**錄音**：彈到喜歡的就按錄音。從你彈的第一個音開始錄，還能下載 MIDI 到 GarageBand、Logic 或 Ableton、在[編輯器](\u002Fmusic\u002Fedit)裡修正彈錯的音，或匯出成樂譜。",{"title":115,"items":116},"常見問題",[117,120,123,126,129],{"q":118,"a":119},"中央 C 是哪個鍵？","在起始八度是 A。按 Z 或 X 往下或往上切換，A 就會彈新八度的 C。",{"q":121,"a":122},"黑鍵怎麼彈？","用中間那排上面一排：W 和 E 是 C♯ 和 D♯，T、Y、U 是 F♯、G♯ 和 A♯，O 和 P 是再上去的 C♯ 和 D♯。",{"q":124,"a":125},"有延音踏板嗎？","有：按住空白鍵。在觸控螢幕上就用「延音」按鈕。",{"q":127,"a":128},"為什麼和弦的音沒有全部響？","很多電腦鍵盤同時只能回報幾個按下的鍵。少按幾個音試試，或直接用手指在螢幕上彈和弦。",{"q":130,"a":131},"可以用 MIDI 鍵盤嗎？","目前還不行。JotJam 的鋼琴支援觸控、滑鼠和電腦鍵盤。",[133,137,141,145,149,153,155],{"slug":134,"title":135,"description":136},"how-to-draw-a-floor-plan-online","怎麼線上畫平面圖：一步一步教你","在瀏覽器裡按比例畫平面圖：先丈量房間，用精確長度畫牆，放入門窗和家具，再標上尺寸，匯出 PNG、按比例 PDF 或 DXF。",{"slug":138,"title":139,"description":140},"floor-plan-symbols","平面圖符號與圖例說明","平面圖上的線代表什麼：門的開啟線、推拉門、窗、樓梯、家具、指北針、比例尺和剖面線符號——附免費 SVG 圖例下載。",{"slug":142,"title":143,"description":144},"furniture-sizes-for-floor-plans","平面圖常用家具尺寸","床、沙發、餐桌、書桌、衣櫃、廚房和衛浴設備的常見尺寸，以及周圍要留多少空間——以公分標示，畫平面圖時直接用。",{"slug":146,"title":147,"description":148},"section-hatch-patterns","剖面材質填充圖樣：每一種代表什麼","建築剖面圖裡的材質填充代表什麼——混凝土、磚、土壤、隔熱材、木材、碎石——什麼時候用哪一種，以及怎麼讓剖面圖好讀。附免費 SVG 填充圖例。",{"slug":150,"title":151,"description":152},"sketch-on-a-phone-or-tablet","不用安裝 App，在手機或平板上畫草圖","直接在瀏覽器裡用 iPad、Android 平板或手機畫畫：支援 Apple Pencil 壓感、手掌可以靠著、雙指縮放、匯出 PNG——免費，免裝 App。",{"slug":154,"title":25,"description":27},"play-piano-on-a-computer-keyboard",{"slug":156,"title":157,"description":158},"easy-guitar-chords-for-beginners","吉他初學者的簡單和弦","吉他新手最先該學的十個和弦——Em、Am、E、A、D、C、G、Dm、G7 和 F——附格數、學習順序和簡單的和弦進行練習。每個和弦都能在線上吉他上聽。",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":160},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"m9 6l6 6l-6 6\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":162},"\u003Cpath fill=\"currentColor\" d=\"M12 7a5 5 0 1 1-4.995 5.217L7 12l.005-.217A5 5 0 0 1 12 7\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":164},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M3 7a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2zm6 12v-6\"\u002F>\u003Cpath d=\"M8 5v8h2V5m5 14v-6m-1-8v8h2V5\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":166},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M14 12v.01M3 21h18M6 21V5a2 2 0 0 1 2-2h8a2 2 0 0 1 2 2v16\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":168},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M5 11a2 2 0 0 1 2 2v2h10v-2a2 2 0 1 1 4 0v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4a2 2 0 0 1 2-2\"\u002F>\u003Cpath d=\"M5 11V6a3 3 0 0 1 3-3h8a3 3 0 0 1 3 3v5M6 19v2m12-2v2\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":170},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M6 3L3 6m18 12l-3 3M11 3l-8 8m13-8L3 16M21 3L3 21M21 8L8 21m13-8l-8 8\"\u002F>",1792672097500]