System and method for improving audio during post-production...

Details System and method for improving audio during post-production... System and method for improving audio during post-production...

2007-02-13

2007-02-13

Tran, Thai Q. (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C381S056000, C381S058000

Reexamination Certificate

active

10184707

ABSTRACT:
A system and method for improving audio quality, by means of signal processing on a computer, during post-production of recordings is disclosed. A recording of a “chirp” tone at the beginning of a scene is followed by analysis of the recorded chirp on the computer. For the acoustic signature of the recorded chirp, the computer can characterize the acoustic environment in which the recording was made and use those characteristics to improve the remainder of the audio. The processing that can be achieved by the computer includes, but is not limited to, frequency response correction and acoustic echo cancellation. A physical device for generating the chirp may be pre-built into a video recorder or may be an add-on device placed in physical proximity to the video recorder while the chirp is generated.

REFERENCES:
patent: 6694126 (2004-02-01), Van Lente

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