Subjective Listening Tests about Front Images on Frontal Double Layered WFS System

摘要

For the next generation television such as 3DTV and UHDTV (Ultra High DefinitionTeleVision), audio also should be realistically represented corresponding to realistic 3Dvideo or ultra high-resolution video. Therefore high-order (more than 5) multichannelsystems with 3D loudspeaker arrangement are proposed to represent a realistic 3D soundscene. NHK’s 22.2 multichannel audio system is a good example. However it can occursevere problem to install 24 loudspeakers at normal living room. This paper presents adifferent method, which represents high-order multichannel audio signal with a singleloudspeaker array or several ones. If the rendering position of virtual loudspeaker image iswithin a loudspeaker array plane, we utilize a Wave Field Synthesis (WFS) method foraccurate localization and wide sweet spot area. This paper presents the implementationprocedure of loudspeaker array for reconstructing high-order multichannel sound (22.2channels) and evaluation results though comparing with real loudspeaker arrangementenvironment.