This invention provides a device that can be plugged into an intranet and offers searchable index functionality of that intranet without requiring information about system configuration or administration. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. , wherein mixing can be performed for a shortened period of time and the sparingly water-soluble drug substance can be uniformly solubilized or dispersed in a liquid medium. The present disclosure provides a speech mash up application for a user interface of a mobile or desktop device that does not require expensive speech processing technologies.