Abstract: Disclosed herein is a pedal simulator. The pedal simulator installed at an electronic brake system which includes a master cylinder coupled with a reserver and configured to generate an oil pressure according to a driver's pedal force, a pedal displacement sensor configured to detect displacement of a brake pedal, and an oil pressure generating device configured to output an electric signal corresponding to an operation of the brake pedal through the pedal displacement sensor, to operate a motor and also to convert a rotating force of the motor into a rectilinear motion, includes a pedal simulation unit connected with the master cylinder and configured to provide a reaction force according to the pedal force of the brake pedal; and a simulation valve connected with a rear end of the pedal simulation unit and configured to control a flow in a passage according to an opening and closing operation, wherein the simulation valve controls a flow rate of the oil by controlling a degree of opening and closing.

Abstract: Disclosed herein is a pedal simulator. The pedal simulator installed at an electronic brake system which includes a master cylinder coupled with a reserver and configured to generate an oil pressure according to a driver's pedal force, a pedal displacement sensor configured to detect displacement of a brake pedal, and an oil pressure generating device configured to output an electric signal corresponding to an operation of the brake pedal through the pedal displacement sensor, to operate a motor and also to convert a rotating force of the motor into a rectilinear motion, includes a pedal simulation unit connected with the master cylinder and configured to provide a reaction force according to the pedal force of the brake pedal; and a simulation valve connected with a rear end of the pedal simulation unit and configured to control a flow in a passage according to an opening and closing operation, wherein the simulation valve controls a flow rate of the oil by controlling a degree of opening and closing.

Abstract: An apparatus for reproducing sound from original source signals has a control device, a first speaker, and a second speaker. The control device receives first and second original source signals, and controls magnitudes and phases of the received first and second original source signals so that a sound pressure level in a pre-determined zone is higher than a sound pressure level in a zone other than the pre-determined zone, and outputs first and second controlled source signals. The first speaker receives the first controlled source signal and reproduces sound. The second speaker receives the second controlled source signal and reproduces sound. The apparatus according provides a sound environment in which only the person using the sound system enjoys the sound.

Abstract: An apparatus for reproducing sound from original source signals, has a control device, a first speaker, and a second speaker. The control device receives first and second original source signals, and controls magnitudes and phases of the received first and second original source signals so that a sound pressure level in a pre-determined zone is higher than a sound pressure level in a zone other than the pre-determined zone, and outputs first and second controlled source signals. The first speaker receives the first controlled source signal and reproduces sound. The second speaker receives the second controlled source signal and reproduces sound. The apparatus according provides a sound environment in which only the person using the sound system enjoys the sound.

Abstract: The present invention relates to an apparatus for reproducing sound, a method for reproducing sound, a monitor with speakers, and a mobile phone with speakers. An apparatus according to the present invention is an apparatus for reproducing sound from original source signals, and comprises a control means, a first speaker, and a second speaker. The control means receives first and second original source signals, and controls magnitudes and phases of the received first and second original source signals so that a sound pressure level in a pre-determined zone is higher than a sound pressure level in zone other than the pre-determined zone, and outputs first and second controlled source signals. The first speaker receives the first controlled source signal and reproduces sound. The second speaker receives the second controlled source signal and reproduces sound. The apparatus according to the present invention can provide the sound environment in which only the person using the sound system enjoys the sound.