31results about How to "Accurate sound" patented technology

A display apparatus includes a display panel including a plurality of pixels and configured to display an image; a housing module including a roller therein such that the display panel is configured to be wound on the roller to be housed in the housing module or unwound from the roller to extend from the housing module; a rolling module including a structure connected to the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure; and a vibration device on the structure, the vibration device configured to vibrate the display panel in an unwound state.

A display apparatus includes a display panel including a plurality of pixels and configured to display an image, a roller on which the display panel is wound or unwound, a rolling module including a structure connected to an upper portion of the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure, and a vibration device at the structure. The vibration device is configured to vibrate the display panel when unwound from the roller. The vibration device includes a vibration generator that contacts a contact surface of the display panel and is configured to move to maintain the contact with the contact surface.

A display apparatus includes a display panel including a plurality of pixels and configured to display an image; a housing module including a roller therein such that the display panel is configured to be wound on the roller to be housed in the housing module or unwound from the roller to extend from the housing module; a rolling module including a structure connected to the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure; and a vibration device on the structure, the vibration device configured to vibrate the display panel in an unwound state.

A display apparatus includes a display module that includes a display panel and is configured to display an image. A rear cover is on a rear surface of the display module. A first vibration generating module is in a first rear region of the rear cover, and a second vibration generating module in a second rear region of the rear cover. The rear cover includes a first hole that overlaps the first vibration generating module, and a second hole that overlaps the second vibration generating module.

A user terminal apparatus is provided. The user terminal apparatus includes: a flexible display including: a main area; and a sub area comprising a curved portion and extending from the main area to a side portion of the user terminal apparatus; a housing configured to enclose the flexible display; a sound output hole provided between the flexible display and the housing and configured to output a sound from a call function; and a sound input hole configured to receive an input sound.

A display apparatus includes a display module that includes a display panel and is configured to display an image. A rear cover is on a rear surface of the display module. A first vibration generating module is in a first rear region of the rear cover, and a second vibration generating module in a second rear region of the rear cover. The rear cover includes a first hole that overlaps the first vibration generating module, and a second hole that overlaps the second vibration generating module.

Disclosed is a display apparatus for transferring an accurate sound. The display apparatus includes a display module including a display panel configured to display an image, a panel guide configured to support a rear periphery portion of the display panel, a rear cover configured to support the panel guide and to cover a rear surface of the display module, a first vibration generating module in a first portion of the rear cover, the first vibration generating module being configured to vibrate a center portion of the display panel, and a second vibration generating module in a second portion of the rear cover, the second vibration generating module being configured to vibrate a periphery portion of the display panel.

The invention discloses a high-frequency sound wave focuser. It comprises: a conical core; a truncated core; the large end of the truncated core and the bottom surface of the conical core have the same diameter and are connected together; a horn; the conical core is arranged in the cavity of the horn, and the There is a space between the horn and the conical core. The present invention also provides a sound collecting unit, which is composed of the above-mentioned high-frequency sound wave focuser and a coaxial horn; the high-frequency sound wave focuser is arranged at the high-pitched outlet of the coaxial horn, and the horn is connected to the coaxial horn. connected to the coaxial speakers. The invention can divide treble and bass to overcome the interference of different frequencies; the timbre is accurate; the high and low speakers can be freely selected and matched, so that the timbre can achieve high fidelity effect; the output power and sound pressure level are greatly improved regardless of the high frequency sound wave focus Whether it is a sound collector or a concentrator, the work efficiency is very high.

A display apparatus includes a display panel including a plurality of pixels and configured to display an image, a roller on which the display panel is wound or unwound, a rolling module including a structure connected to an upper portion of the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure, and a vibration device at the structure. The vibration device is configured to vibrate the display panel when unwound from the roller. The vibration device includes a vibration generator that contacts a contact surface of the display panel and is configured to move to maintain the contact with the contact surface.

The invention discloses a manipulator teaching platform and a control method applied to piano teaching. The teaching platform includes an angle sensor, a MIDI keyboard, a Bluetooth serial port module, a lower computer module, a host computer module, a DC motor, a piano teaching manipulator and a platform base; The sensor is used to detect the rotation angle information of the piano teaching manipulator in real time; the MIDI keyboard is used to collect the touch force information of the finger; the bluetooth serial port module is used for the communication between the lower computer module and the upper computer module; the DC motor is integrated with a reduction box and coding The platform base is used to assemble the DC motor and the piano teaching manipulator; the piano teaching manipulator adopts an under-actuated driving method, and drives the proximal finger joint rotating wheel through the metacarpophalangeal joint rotating wheel, and the proximal finger joint rotating wheel drives the distal joint rotating wheel. The transmission mode of the piano teaching manipulator is rope transmission, and the two ends of the rope are respectively connected to the driving wheel at the shaft end of the DC motor and the rotating wheel of the metacarpophalangeal joint.

The invention discloses a topological horn type novel horn and a sound system. The novel horn comprises a box body, a pipeline and a vibration sound source. A first horn mouth and a second horn mouthare formed in the front end of the box body, and an open hole is formed in the rear end of the box body. The first end of the pipeline extends into the box body from the first horn mouth and is connected with the second horn mouth, and the second end of the pipeline is connected with the open pore; the vibration sound source is arranged at the joint of the second end of the pipeline and the rear end of the box body and used for generating surface vibration and air vibration according to audio signal excitation. According to the novel horn, the sound waves generated by the inner surface and theouter surface are in the same phase, and the power of the sound generated by the inner surface and the outer surface cannot offset each other, but can be well superposed together; moreover, the novelhorn not only has the surface vibration of the shell, but also has the vibration of air in the cavity; and therefore, the advantages of better directivity, smaller sound attenuation, higher sound fidelity and the like are achieved.

The present invention provides a high-pressure fuel supply pump equipped with a normally closed electromagnetically driven suction valve mechanism suitable for increasing the capacity and generating less sound. This high-pressure fuel supply pump equipped with an electromagnetically driven suction valve mechanism includes: a valve member having a valve seat surface abutting against a suction valve seat; and a plunger rod positioned on the valve seat surface side of the valve member and magnetically attracted When the plunger rod moves the entire stroke in the valve opening direction of the valve member and the armature for driving the plunger rod comes into contact with the stopper, the shield is in contact with the valve member. Surfaces on the opposite side to the valve seat surface are arranged to face each other with a gap therebetween. Accordingly, it is possible to reduce the fluid force that urges the valve member in the valve-closing direction on the surface of the valve member opposite to the valve seat surface due to the fuel overflowing from the pressurization chamber. In addition, since the shield and the suction valve member are not in contact, there is no increase in sound generation. Therefore, it is possible to provide a high-pressure fuel supply pump that can accurately control the flow rate and reduce the generation of sound even if the capacity is increased.

An improved music fingering aid has at least one decal fittable overlaying the fingerboard and attachable to the neck of a stringed instrument. The decal includes string identifier indicators, a graduated position indicators series, and a plurality of interval demarcations that employ distinct colors for visual distinction. The indicators do not pair particular notes with particular colors. Instead the improved music fingering aid associates music theory with muscle memory to ensure sounded notes are played in near perfect pitch and, when playing ensemble, in tempered pitch. Contemplation and improved association of music theory is thereby enabled.