Audio evaluation under control of video picture frame number

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358342, 358343, 360 191, 360 25, 360 31, 360 722, 369 58, H04N 1706, G11B 2730, G11B 2736

Patent

active

045983240

ABSTRACT:
Method and apparatus for evaluating the audio characteristics of an audio-video program recorded on a storage member in which the video portion of the program contains picture frame code numbers. A predetermined picture frame number at which video evaluation of the audio portion of the program is to commence is initially established. The audio and video portions of the recorded audio-video program are recovered, and the picture frame code numbers are extracted from the video portion thereof. The extracted picture frame numbers from the recovered video portion are then compared with the predetermined picture frame number, and audio evaluation of the audio portion of the program commences upon coincidence of the detected picture frame number and the predetermined picture number. Evaluation is effected by measuring predetermined audio characteristics of the recovered audio portion and comparing the measured characteristics with corresponding audio reference characteristics. In a preferred embodiment, the measured audio characteristics of a first storage member are stored in a memory device and used as a "signature" for comparision with measured audio characteristics of a second storage member.

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