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電荷潜像の読取り方式
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Monitor method of recording sound on film
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Sound recording with the light valve |
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Audiovisual display system
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Sound recording and reproducing
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Circuit amplificateur audio
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Sound recording
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Recording and reproduction of electrical impulses
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Combined motion picture projector and sound reproducing apparatus
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Apparatus for the photographic recording and reproducing of sound
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Light testing device
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Sound recording |
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Sound motion picture reproducing apparatus
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Optical sound recording with a silicon carbide electroluminescent diode |
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Apparatus for recording and reproducing sound
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Translating system
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Reproduction of sound
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Sounds Recorded On" Movie" Film |
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