Recently, many researches of modeling or measuring human feeling have been conducted to understand human emotions. However, researches on music-related human emotions have much difficulty due to the subjective perception of emotions. We selected low-level musical features which may trigger human emotions, based on TV music program's audience rating information and the corresponding music. In this program, audience was requested to rate music of the contestants and to select their preferred music based on their emotional feelings. In addition, we implemented personalized music recommendation system using selected features, context information and listening history. In the experimental results, we confirmed that selected features can be reliable features when these features are used in music recommendation systems.

The growth of multimedia is increasing the need for standards for accessing and searching distributed repositories. The moving picture experts group (MPEG) is developing the MPEG query format (MPQF) to standardize this interface as part of MPEG-7. The objective is to make multimedia access and search easier and interoperable across search engines and repositories. This article describes the MPQF and highlights some of the ways it goes beyond today's query languages by providing capabilities for multimedia query-by-example and spatiotemporal queries.

4D is an irresistible new trend in movie industry. Also the Digital Cinema technology is pervasive in most of theatre system. They provide movies in streaming way to the theatres simultaneously. We present a framework for streaming service with sensory effect to bring 4-D entertainment home based on MPEG-V standard. A complete framework for 4-D streaming can be supported from authoring of sensory effects to environment description and commanding rendering devices for the sensory effects by MPEG-V and couple of other standards. Now the standard and the framework technology are ready for streaming 4-D contents for users in home.

Advances in media technologies brought 3-D TV home and 4-D movies to your neighbour. We present a framework for 4-D broadcasting to bring 4-D entertainment home based on MPEG-V standard. A complete framework for 4-D entertainment from authoring of sensory effects to environment description and commanding rendering devices for the sensory effects can supported by MPEG-V and couple of other standards. Part 2 of MPEG-V provides tools for describing capabilities of the sensory devices and sensors, part 3 provides tools to describe sensory effects, and part 5 provides tools to actually interact with the sensory devices and sensors.

The robustness of audio fingerprinting system in a noisy environment is a principal challenge in the area of content-based music retrieval, especially for use in portable consumer devices. Our new audio fingerprint method using sub-fingerprint masking based on the predominant pitch extraction dramatically increases the accuracy of the audio fingerprinting system in a noisy environment, while requiring much less computing power for matching, compared to the expanded hash table lookup method, where the searching complexity increases by the factor of 33 times the degree of expansion.