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Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 1, January 1931)
Microphone Concentrators in Picture Production
SMPTE • Journal Article • [Active]
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- Progress in the Motion Picture Industry[Active]
- Parabolic Sound Concentrators[Active]
Level 1 — direct references (docs this doc cites)
- 1. Olson Harry F. Wolff Irving : “Sound Concentrators for Microphones,” Journal of the Acoustical Society of America , 1 (April, 1930 ), No. 3 .EXTERNAL