{"id":20285,"date":"2026-09-22T10:29:08","date_gmt":"2026-09-22T00:29:08","guid":{"rendered":"https:\/\/geoffreychen.com\/why-piano-hammers-are-covered-with-felt\/"},"modified":"2026-09-22T10:29:08","modified_gmt":"2026-09-22T00:29:08","slug":"why-piano-hammers-are-covered-with-felt","status":"publish","type":"post","link":"https:\/\/geoffreychen.com\/zh\/why-piano-hammers-are-covered-with-felt\/","title":{"rendered":"\u94a2\u7434\u69cc\u4e3a\u4ec0\u4e48\u8981\u5305\u4e0a\u6bdb\u6be1\uff1f"},"content":{"rendered":"<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/public-assets.geoffreychen.com\/wordpress\/articles\/why-piano-hammers-are-covered-with-felt\/4bec42a62531fec932cd6dc2.jpg?w=1140&#038;ssl=1\" alt=\"\u94a2\u7434\u69cc\u4e3a\u4ec0\u4e48\u8981\u5305\u4e0a\u6bdb\u6be1\uff1f\" 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tonal change, allowing a player's touch to shape both loudness and 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