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There has recently been an increasing interest in the generation of a sound field that is audible in one spatial region and inaudible in an adjacent region. The method proposed here ensures the control of the amplitude and phase of multiple acoustic sources in order to maximize the acoustic energy difference between two adjacent regions while also ensuring(More)
In this paper, we propose a method of restoring principal to ambient energy ratio (PAR) at the decoder in the principal component analysis (PCA)-based parametric audio coding. The conventional approach applies the post-scaling at the decoder using the energy information extracted from the input signal at the encoder. However, this approach has a problem(More)
An interactive audio service provides audio editing functionality to users. In the service, the users can control the wanted audio objects to make their own audio sound using a spatial audio object coding (SAOC) scheme. However, the vocal object cannot be removed perfectly from the down-mix signal in Karaoke mode of the SAOC. Thus, in this paper, a modified(More)
This paper presents a panoramic video transmission system using spatially divided tiles based on the spatial relationships descriptions of MPEG-DASH. The proposed server system provides tiling and encoding functionalities for ROI-based retrieving. Moreover, it guarantees the temporal and spatial synchronization when rendering multiple tiles by a(More)