Patent ID: 8634697

Claim:
A sound signal control device comprising: a change determining unit to determine a change of a reproduction speed of input data containing a moving picture signal and a sound signal; a changeover detecting unit to detect, as a changeover timing, a predetermined period in which a degree of coincidence of a moving picture is equal to or larger than a predetermined value when the change determining unit determines the change to a different reproduction speed during the reproduction; a reproducing unit to reproduce a sound and the moving picture based on the input data and, when the change determining unit determines the change of the reproduction speed, changing over the reproduction speed at the changeover timing; and a sound control unit to mute a sound output based on the sound signal at the changeover timing, wherein the reproducing unit changes over the reproduction speed when the sound control unit mutes the sound output, and the sound control unit cancels the mute within the predetermined period when the reproducing unit changes over the reproduction speed.