Abstract:
An apparatus and method for generating a three dimensional (3D) stereo sound signal from a received audio signal in a mobile communication system are provided. In the 3D stereo sound generating apparatus, a low-frequency signal extraction portion extracts a low-frequency signal from a received audio signal, a spatiality generator generates a spatiality signal from the received audio signal, an output mode selector receives the spatiality signal and the low-frequency signal and selects an output mode for a 3D stereo sound signal, and an output portion outputs the 3D stereo sound signal to a predetermined output device according to the selected output mode.
Abstract:
The present invention relates to a method of producing paste containing flaky aluminum powder, which is the main ingredient of the topcoat paint for automobiles. The present invention is intended to provide a production method, which is more economical than the conventional method of using the gas-atomozied powders. In particular, a vessel is charged with by-product scraps from the production process of aluminum foil, balls, mineral spirits, and an unsaturated fatty acid, such as oleic acid. Under such conditions, the ball-milling is carried out to yield an intermediate paste containing flaky aluminum powder, which is then made into aluminum paste by adjusting the amount of a solvent.