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3D audio effects are a group of sound effects that manipulate the sound produced by stereo speakers, surround-sound speakers, speaker-arrays, or headphones. This frequently involves the virtual placement of sound sources anywhere in three-dimensional space, including behind, above or below the listener. ==Complete 3D positional audio== Using head-related transfer functions and reverberation, the changes of sound on its way from the source (including reflections from walls and floors) to the listener's ear can be simulated. These effects include localization of sound sources behind, above and below the listener. Some 3D technologies also convert binaural recordings to stereo recordings. MorrowSoundTrue3D converts binaural, stereo, 5.1 and other formats to 8.1 single and multiple zone 3D sound experiences in realtime. 3D Positional Audio effects emerged in the 1990s in PC and Game Consoles. 3D audio techniques have also been incorporated in music and video-game style music video arts. The Audioscape research project, provides musicians with a real-time 3D audiovisual content authoring and rendering environment, suitable for live performance applications. A site with animations and theory of a system using HRTF's to create 3D Audio: (ISVR Virtual Acoustics ). True representation of the elevation level for 3D loudspeaker reproduction become possible by the Ambisonics and Wave field synthesis Principle, MorrowSound True3D and A&G (3D-EST ). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「3D audio effect」の詳細全文を読む スポンサード リンク
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