“Victrolac Motion Picture Records” (Barton, JSPTE, 1932) Published 2022/10/07 at 800 × 339 in Things I learned on Phono EQ curves, Pt. 4 ← Previous Next → source Journal of the Society of Motion Picture Engineers April 1932 p452Barton 氏の Victrolac 論文のアブストラクトAbstract section of FC Bartons Victrolac paper