Sound motion picture camera

Details Sound motion picture camera Sound motion picture camera

1975-07-02

1976-05-25

Hayes, Monroe H.

Optics: motion pictures

With sound accompaniment

Housing and supports

352 1, 352 5, G03B 3100

Patent

active

039588696

ABSTRACT:
The disclosure relates to a system for providing a substantially noise free audio intelligence signal for a sound-movie camera. The system comprises first and second microphones mounted on the camera, the first microphone being arranged for detecting camera noise and audio intelligence for providing a first electrical signal having camera noise and audio intelligence components and the second microphone being arranged for detecting substantially only camera noise for providing a second electrical signal having substantially only a noise component. The second microphone is mounted nearer to the camera noise source than the first microphone so that the second signal is in advanced phase relation relative to the first signal. The system also includes a delay means and inverting means for delaying and inverting the second signal to provide a delayed inverted second signal which is in phase with the first signal. A combining means combines the delayed inverted second signal and the first signal to thereby cancel the noise components and provide a third signal having substantially only an audio intelligence component to be recorded.

REFERENCES:
patent: 2074030 (1937-03-01), Shoup

Affiliated with

Also associated with

Rating

Sound motion picture camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sound motion picture camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sound motion picture camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-901048