Method and system for processing obstacle effect in virtual acoustic space

A decoder of an obstacle effect processing system, the decoder comprising:

• an obstacle plane search unit configured to receive a parameter for an obstacle candidate plane extracted from spatial information, and determine, in response to the parameter, whether the obstacle candidate plane is an obstacle related to a path between a position of a virtual sound source and a position of a user;
• and
• an obstacle effect processor configured to apply a sound effect according to the obstacle to an audio signal when the obstacle candidate plane is the obstacle,
• wherein the obstacle candidate plane is a plane of an object that may become the obstacle in a sound propagation path between the virtual sound source and the user, and
• wherein the obstacle candidate plane is represented by reducing information of the object, and
• wherein the parameter includes at least one of a unique number of the obstacle candidate plane, coordinates representing a position and a shape of the obstacle candidate plane, or transmission information of the object.