Patent application number | Description | Published |
20090136077 | SPEAKER APPARATUS AND METHOD FOR DRIVING SPEAKER - A speaker apparatus includes an acoustic vibration plate, and an actuator mounted to the acoustic vibration plate such that one end and the other end thereof, in a driving axis direction, exist in a plate surface of the acoustic vibration plate. The actuator applies vibration to the acoustic vibration plate to play back sound. The speaker apparatus enables a sound image to uniformly spread over the entire plate surface of the acoustic vibration plate. In addition, the entire speaker apparatus can be made compact. | 05-28-2009 |
20090175471 | LOUDSPEAKER APPARATUS - A loudspeaker apparatus includes an acoustic diaphragm; a support member having a housing, which is a hole in a surface of the support member facing the acoustic diaphragm; a magnetostrictive actuator having a magnetostrictor and a drive rod coupled to an end of the magnetostrictor, the magnetostrictive actuator being inserted into the housing such that the drive rod contacts the acoustic diaphragm, the magnetostrictive actuator applying vibration to the acoustic diaphragm; and a spring inserted into the housing from a position opposite to a position of the drive rod of the magnetostrictive actuator, the spring pressing the magnetostrictive actuator toward the acoustic diaphragm and applying a load to the magnetostrictor. | 07-09-2009 |
20100067726 | SPEAKER SYSTEM AND SPEAKER DRIVING METHOD - A speaker system includes: a display panel having a display screen; a structure having a plate part functioning as an acoustic diaphragm located outside of a perimeter of the display screen and being supported by the display panel; and an actuator attached to the structure so that a displacement direction of the actuator may be a direction of a plate surface of the plate part. | 03-18-2010 |
20100284555 | SPEAKER DEVICE - A speaker device includes: an acoustic diaphragm; a vibration transfer member provided in a state of touching the acoustic diaphragm over a given length, which is configured to transfer vibration to the acoustic diaphragm; and an actuator configured to add vibration corresponding to an audio signal to be reproduced to the vibration transfer member to thereby transfer vibration to the acoustic diaphragm through the vibration transfer member and to generate sound. | 11-11-2010 |
20110025927 | Display device and audio output device - A display device includes a display portion that displays video, a first audio output portion that outputs stereo audio of a high frequency range, and that is a surface sound source positioned on a rear surface of the display portion, on one of an upper section and a lower section of the display portion, a second audio output portion that outputs stereo audio of a lower frequency range, and that is one of a surface sound source and a point sound source positioned on the rear surface of the display portion, on which the first audio output portion is not positioned, and a delaying portion that delays output of the second audio output portion to be later than output of the first audio output portion. | 02-03-2011 |
20110238193 | AUDIO OUTPUT DEVICE, VIDEO AND AUDIO REPRODUCTION DEVICE AND AUDIO OUTPUT METHOD - An audio output device includes a division unit for dividing an input audio signal into a first audio signal and a second audio signal, a delay processing unit for outputting the first audio signal after delaying the first audio signal from the second audio signal by a predetermined amount, a frequency adjustment unit for adjusting a frequency band of the second audio signal to be a high frequency band of the first audio signal or a frequency band higher than the first audio signal, first output units provided above or below a screen of a display unit for displaying an image, for outputting the first audio signal input from the delay processing unit, and second output units provided above a middle height of the screen of the display unit, for outputting the second audio signal adjusted by the frequency adjustment unit. | 09-29-2011 |
20110249832 | SPEAKER DEVICE - A speaker device includes: a casing having a cylindrical shape which opens at one end side; and a sounding body arranged at the other end side of the casing and driven based on an audio signal, wherein a sealed space is formed by the casing and a setting surface when the casing is set, which functions as a cabinet. | 10-13-2011 |
20110305349 | REPRODUCTION DEVICE AND REPRODUCTION METHOD - A reproduction device includes an information reading unit that reads sensitivity information from a storage unit of a headphone device which has a speaker reproducing an electric signal of an audible signal as a sound and the storage unit storing the sensitivity information for the speaker, an adjustment unit that adjusts an output level of the electric signal supplied to the headphone device, and a control unit that reads the sensitivity information from the storage unit via the information reading unit, and controls the adjustment unit such that the electric signal lies in an allowable maximal output level based on the sensitivity information. | 12-15-2011 |
20120008818 | SPEAKER DEVICE - A speaker device includes: an acoustic diaphragm having a given shape and made of a material having physical anisotropy; and an excitation means attached to the acoustic diaphragm for exciting vibration components in consideration of a direction corresponding to the physical anisotropy. | 01-12-2012 |
20120063633 | SPEAKER - A speaker has an acoustic diaphragm, and an actuator that is driven based on a first acoustic signal. The actuator has a transmission portion that is directly or indirectly attached to the acoustic diaphragm and transmits a displacement output of the actuator to the acoustic diaphragm. The speaker also has a sounding body that is driven based on a second acoustic signal that is identical to or different from the first acoustic signal. | 03-15-2012 |
20120106773 | SPEAKER DEVICE AND METHOD FOR FORMING SPEAKER DEVICE - A speaker device which can form an ideal cylindrical wave as sound traveling nondirectionally in a horizontal direction toward a listener. A vibration transmitting member is supported at one end thereof to the vertex of a conical diaphragm, and vibration generated by a vibrating element according to an acoustic signal is applied to the other end of the vibration transmitting member. The angle θ between the perpendicular dropped from the vertex of the conical diaphragm to the base thereof and the side surface of the conical diaphragm is set according to the sound velocity in the air and the sound velocity in the conical diaphragm so that the distance traveled by a sound radiated from the vertex is equal to the distance traveled by a sound radiated from an end of the side surface of the conical diaphragm farthest from the vertex. | 05-03-2012 |
20120114147 | SPEAKER APPARATUS - A speaker system includes: a first speaker unit having a predetermined directivity angle in the horizontal direction; and a pair of second speaker units which are disposed opposite to each other with the first speaker unit sandwiched between them when viewed in the vertical direction and which have a directivity angle in the horizontal direction greater than the directivity angle of the first speaker unit, wherein distances from the center of the first speaker unit to the centers of the pair of second speaker units are equal to each other, and the first speaker unit and the pair of second speaker units are disposed so as to face toward the same direction. | 05-10-2012 |
20120114150 | SPEAKER APPARATUS - A speaker apparatus includes: an actuator serving as a source of vibration; a vibration transmitting member connected to the actuator; and two sheet-like diaphragms provided opposite to each other in the thickness direction thereof with the vibration transmitting member and disposed in contact with the vibration transmitting member, wherein vibration generated at the actuator is transmitted to each of the two diaphragms through the vibration transmitting member to output sounds. | 05-10-2012 |
20120230499 | SPEAKER APPARATUS - A speaker apparatus includes: a diaphragm vibrating to output sounds and being formed in an annular shape having a center hole in the middle thereof; a driving section causing the diaphragm to vibrate; a light emitting member emitting light; and a heat controlling member radiating heat generated when the light emitting member emits light or conducting the heat to a heat radiating section, wherein at least a part of the heat controlling member is provided on an axis including the center axis of the diaphragm, and the light emitting member is disposed on an end face of the heat controlling member. | 09-13-2012 |
20130028458 | SPEAKER APPARATUS AND AUDIO OUTPUT METHOD - The present invention allows for the further enhancement of a low pitch range with a simple structure without increasing the size. The present invention is provided with: a pipe ( | 01-31-2013 |