Patent ID: 7480386

Claim:
An audio information transforming method applied to a video/audio format in which a screen includes a plurality of objects and each object has video information, position information, and audio information, said method comprising the steps of: virtual listening point setting of setting a virtual listening point at a position different from a basic listening point that is set as a position at which a listener listens to an audio; relative velocity calculating of calculating a relative velocity between the virtual listening point and the object; and audio frequency transforming of executing an audio frequency transformation based on the relative velocity to add a Doppler effect to the audio information at the virtual listening point, wherein, when the audio information including the Doppler effect previously is included in the object, the audio frequency transforming step executes an audio frequency transformation to cancel the Doppler effect included in the audio information of the object, and executes the audio frequency transformation based on the relative velocity to add the Doppler effect to the audio information of the virtual listening point.