Real Environment Acoustic Database

Recently importance of hands-free speech communication is increasingly recognized. The sound data for open evaluation is necessary for the studies such as sound source localization, sound retrieval, sound recognition and hands-free speech recognition in real acoustic environments. This paper reports on our project for the acoustic data collection. There are many kinds of sounds in real environments. The sounds are specified by sound sources and room acoustics. The number of combination of the sound sources, source positions, and rooms is huge in real acoustic environments. We assumed that the sound in the environments can be simulated by convolution of the isolated sound sources and impulse responses. As an isolated sound source, a hundred kinds of environment sounds and speech sounds are collected. The impulse responses are collected in various acoustic environments. Additionally we collected sounds from the moving source.