Patent ID: 8139165

Claim:
A television receiver, comprising: silence detection means for detecting a silent part from an audio component of a received television signal; a scene change detection means for detecting a scene change part from a video component of said television signal; a video audio changing point detection means for detecting a time when said silent part and said scene change part are simultaneously detected, as a video audio changing point; a first characteristic amount extraction means for extracting and holding an audio characteristic amount of said television signal before the time when said video audio changing point is detected, as a first characteristic amount; a second characteristic amount extraction means for extracting and holding an audio characteristic amount of said television signal after the time when said video audio changing point is detected, as a second characteristic amount; a comparison determining means for comparing said first characteristic amount and said second characteristic amount to determine whether a predetermined condition is satisfied or not; and a volume control means for controlling an output level when outputting audio of said television signal on the basis of a result of said comparison determining means.