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An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]
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![An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]](http://fastmarts.top/cdn/shop/files/BE236D98-7679-C8EA-B3B5-EC7C7BB207A1_6dfffab3-d215-490c-97de-64e8c0b6c2f8.webp?v=1737132220&width=1445)
![An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]](http://fastmarts.top/cdn/shop/files/8EFE67E8-D12F-8FBF-D0F7-3A300302F71A_33abf52f-6792-48e6-8181-409ad8b445e8.webp?v=1737132220&width=1445)
![An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]](http://fastmarts.top/cdn/shop/files/F697E375-EECB-AEE2-5D7D-CF38ECCF36DB_83d55513-beed-420d-b1f0-577d8ceaeb24.webp?v=1737132220&width=1445)
![An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]](http://fastmarts.top/cdn/shop/files/AA5A0A89-A0FA-6045-B008-D61DA88B4CFC_e73123da-7b22-4a1a-9eeb-903322113145.webp?v=1737132220&width=1445)
![An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]](http://fastmarts.top/cdn/shop/files/86D33765-6AA3-90FC-2B23-CDD2F9B1F6C8_8e5094e3-2c91-4f71-a595-a83406cec218.webp?v=1737132220&width=1445)