Information processing apparatus, information processing method and program

An information processing method, comprising the steps of:

• calculating a relative position of a sound source of a virtual object to a user, the virtual object allowing the user to perceive such that the virtual object exists in a real space by sound image localization, on a basis of a position of a sound image of the virtual object and a position of the user;
• performing a sound signal process of the sound source such that the sound image is localized at the calculated localization position;
• and
• updating the position of the held sound image, wherein
• when sound to be emitted from the virtual object is to be changed over, in a case where a position of a sound image of sound after the changeover is to be set to a position that takes over a position of the sound image of the sound before the changeover, the held position of the sound image is referred to to calculate the position of the sound image.

A program for causing a computer to execute a process comprising the steps of:

• calculating a relative position of a sound source of a virtual object to a user, the virtual object allowing a user to perceive such that the virtual object exists in a real space by sound image localization, on a basis of a position of a sound image of the virtual object and a position of the user;
• performing a sound signal process of the sound source such that the sound image is localized at the calculated localization position;
• and
• updating the position of the held sound image, wherein
• when sound to be emitted from the virtual object is to be changed over, in a case where a position of a sound image of sound after the changeover is to be set to a position that takes over a position of the sound image of the sound before the changeover, the held position of the sound image is referred to to calculate the position of the sound image.