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.

The invention provides a user tone based method and device for voice synthesis. The method includes acquiring user audio data input by a user and determining user tone features of user audio data; synthesizing testing audio data corresponding to testing data according to the user tone features and the testing data and broadcasting and receiving a broadcasting adjustment command of the user for thetesting audio data; modifying the user tone features according to the broadcasting adjustment command and taking the modified user tone features as the final standard tone features; synthesizing target audio data corresponding to to-be-broadcasted data according to the standard tone features and the to-be-broadcasted data. According to the invention, the tone features of the user are extracted and the audio data is broadcasted based on tone features of the user, so that user sounding can be simulated and audio broadcasting truth can be improved. The tone features can be adjusted based on thebroadcasting adjusting command of the user, so that the finally broadcasted audio data can be more in line with features and demands of the user.

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.

This invention is a reversible practice pad for drum practice. The reversible practice pad includes a planar base having at least one sloping base-riser projecting upwardly therefrom. Each base-riser includes a first part of a two-part fastening material affixed to a top surface of each base-riser. A planar platform includes at least one sloping platform-riser projecting downwardly therefrom. Each platform-riser includes a second part of the two-part fastening material affixed to a bottom surface of each platform-riser. The platform includes a cushioning pad fixed to a top surface thereof. The bottom surface of each platform-riser is brought into contact and fastened with the top surface of an associated base-riser. The base and platform can be selectively fixed together in two different orientations by rotating the platform. In one orientation, the platform and the base are substantially parallel. In an alternate orientation, the platform is sloped with respect to the base.

The invention relates to a hole-drawing machine for a saxophone body, which comprises a base, an electric cabinet, a tube clamping and rotating mechanism, an extrusion disc mechanism and an extrusion drag link mechanism, wherein the electric cabinet is mounted at the lateral back end of the base, the extrusion drag link mechanism is mounted on the base, the extrusion disc mechanism opposite to the extrusion drag link mechanism is mounted in the middle of the base below the extrusion drag link mechanism, and the tube clamping and rotating mechanism opposite to the extrusion disc mechanism is mounted at the front end of the base. In the invention, the tube clamping and rotating mechanism, the extrusion disc mechanism, a double-shaft milling and flattening mechanism and the extrusion drag link mechanism are all mounted on the base, the four mechanisms interact with each other to machine all sound holes in the saxophone body, and each sound hole is machined at high precision and is automatically subject to a cutting process after hole drawing, thereby effectively ensuring the height and the expansion of the sound hole wall, shortening the machining cycle, saving the cost, facilitating the subsequent machining procedure and enabling the saxophone to make more accurate and wonderful sound.

The invention discloses a high-frequency sound wave focuser. The high-frequency sound wave focuser comprises a cone core, a truncated cone core and a horn, wherein the diameter of the larger end of the truncated cone core is equal to the diameter of the bottom face of the cone core, and the larger end of the truncated cone core is connected with the bottom face of the cone core; the cone core is arranged in a cavity of the horn; and intervals are set between the horn and the cone core. The invention further provides a sound focusing unit. The sound focusing unit is composed of the high-frequency sound wave focuser and a coaxial loudspeaker. The high-frequency sound wave focuser is arranged on a high pitch outlet of the coaxial loudspeaker, and the horn is connected with the coaxial loudspeaker. According to the invention, frequency division between the high pitches and low pitches is available, interference of different frequencies are overcomed, and the timbre is accurate; high pitch and low pitch loudspeakers can be selected and matched freely to ensure a high fidelity effect of the timbre; and the output power and the sound pressure level are substantially promoted, and both the high-frequency sound wave focuser and the sound focusing unit are high in work efficiency.

The invention discloses an intelligent auscultation device, and relates to the technical field of medical electronics. The intelligent auscultation device comprises a sound cavity, an earphone, an audio processing module, an electrocardiogram module, a microcontroller and a signal processing module, The sound cavity is connected with the signal processing module; the signal processing module is connected with the audio processing module; the electrocardiogram module is connected with the microcontroller; the microcontroller is connected with the audio processing module and a remote network medical system; and the audio processing module is connected with the earphone. While sounds of the heart, the lung, the ribs or the abdomen are collected through the sound cavity, ECG signals can be collected through the ECG module. The intelligent auscultation device can detect heart sounds and lung sounds at the same time and has the ECG signal detection function.

The invention concerns a musical instrument with free reeds comprising, for each reed (12), an intake box (16) and a delivery box (25) connected by a passage (30) whereat the reed (12) is arranged, the check valves (18, 20) of each intake box (16) are coupled so that, when one of the valves is open, the other valve is closed, and inversely, and the check valves (27, 29) of each delivery box (25) are coupled so that, when one of the valves is open, the other valve is closed and inversely. Further, for each of the intake (16) and delivery (25) boxes associated with a reed (12), at least a closure element (13) is mounted, in a first position, to close at least an opening (17, 19, 26, 28) of an intake (16) or exhaust (25) box.

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.