Low-frequency sound program generation
AssigneeWarner Bros.
InventorsThomas L. McCormack, Albert P. Green
Life of this patent
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Abstract
There is disclosed a method for generating a low-frequency sound program for play during the performance of a motion picture film to produce a physical effect on the theater audience. Rather than to use random low-frequency noise or some other low-frequency source which is unrelated to the audible sound program, the low-frequency program is derived by shifting down in frequency a selected portion of the audible sound program. The final low-frequency program contains frequency components below 40 Hz, at least 50% of the total energy of which is derived from the shifted-down audible program. By so harmonically relating the audible and low-frequency programs, the audio/visual and vibrational sensations are perceived in a less disjointed fashion.
Claims11
A method for producing a sound program for a sound motion picture capable of simulating a physiological and psychological sensation in an audience viewing said motion picture comprising the steps of:
- (a) generating at least a portion of the audible sound program for said motion picture,
- (b) processing said generated audible sound program to produce a low-frequency sound program capable, during subsequent synchronous playback with the projection of said motion picture, for simulating said physiological and psychological sensation, and
- (c) recording synchronously said generated audible sound program and said produced low-frequency sound program for subsequent playback synchronously with the projection of said motion picture.
A sound recording, for play in synchronism with the projection of a motion picture, which is capable of simulating a physiological and psychological sensation in an audience viewing said motion picture;
- said sound recording including an audible sound program for said motion picture;
- a low-frequency sound program capable, during subsequent synchronous playback with the projection of said motion picture, for simulating said physiological and psychological sensation, said low-frequency sound program having been produced by processing at least a portion of said audible sound program;
- said audible and low-frequency sound programs being recorded synchronously for subsequent playback synchronously with the projection of said motion picture.
Dependencies are inferred from the claim text.