1949年改訂版NAB標準規格策定の流れを学びました / On Pt.10, I learned on the history of the formulation of the 1949 NAB Standards, including maginetic recording standards.
vinyl / 78rpm / music / audio
1949年改訂版NAB標準規格策定の流れを学びました / On Pt.10, I learned on the history of the formulation of the 1949 NAB Standards, including maginetic recording standards.