VIDEO/VOICED ENCODER AND VIDEO/VOICE DECODER

摘要

PROBLEM TO BE SOLVED: To automate sound editing such as the adjustment of the sound volume corresponding to a video at the time of editing the video. SOLUTION: An effective pixel area generation means 105 obtains the number of effective pixels with in one frame from an inputted effective pixel position signal. An effective pixel area sound volume conversion means 106 obtains a value obtained by multiplying the ratio of this number of effective pixels and the number of effective pixels of a former frame and a constant to control a sound volume conversion means 108 by setting a value obtained by multiplying this value and a present volume adjusting value to be a new volume adjusting value. Thereby, a sound volume is automatically adjusted based on the moving of a picture to obtain an sound effect with presence.