192 results about "Drumhead" patented technology

An electroacoustically-amplified drum assembly consists of a hollow drum shell with a drumhead closing one or both end thereof and an acoustical air vent in the wall thereof. An acoustical microphone is positioned in the drum shell spaced from and free from any connection to the drumhead and has leads for connection through the acoustical vent to an external amplifier and speaker. An adjustable mount is secured on the interior surface of the drum shell without any break in the wall of the drum shell for supporting the microphone. The adjustable mount may be adjusted and set to establish a position for the microphone for minimizing microphone interference and optimizing proximity effect and sound quality. The drum may have air vent hardware positioned in the acoustical air vent opening and including electrical connections for connection to the external speaker and amplifier. The microphone mount may be supported by nuts on the inner ends of lug bolts extending through the drum shell wall for supporting the head tensioning lugs on the outer surface of the drum shell. An alternative embodiment uses magnets one the outer surface of the drum shell cooperating with magnets inside the drum to support the mount adjustably on the drum shell.

A portable electronic drumhead includes a sensor responsive to drumstick impacts in producing electrical signal pulses input to headphones to thereby simulate sounds of an acoustic drumhead. The sensor includes a Force Sensing Resistor (FSR) lamination coated with an electrically conductive polymer ink, a spacer lamination, and a flexible electrode lamination having on an inner surface thereof a pair of interdigitated electrodes, the electrode lamination elastically contacting the FSR lamination in response to drumstick impacts on the outer surface of the electrode lamination or FSR lamination to thus momentarily reduce electrical resistance between the electrodes. Resilient batter pads overlying the laminations muffle sounds produced by drumstick impacts. Optionally, the sensor may have an annular ring shape which may be placed concentrically on the head of an acoustic drum, the sensor having an upwardly protruding resilient bumper strikable to produce electronically synthesized rim shot sounds.

A tunable drum is shown having a hollow drum shell, and imperforate drumheads closing the ends of said drum shell. One or more opening extend through the drum shell for acoustic venting, and valves are provided for adjusting the size of the openings to vary the amount of acoustic venting, and consequently the volume, pitch, tone, timbre and stick response of said drum. The valves may be slide valves movable, e.g., slidable or pivotable, between an open and a closed position. A preferred valve consists of a ring member positioned for rotation inside said drum and slidable endwise of the drum to cover or uncover said drum openings, or the ring member may have openings that match the drum openings and operable to cover or uncover the openings or rotation. A handle for rotation of the ring member extends outside the shell for movement by the drummer.

A bowl-shaped cover (1) with a hole at the bottom replaces the cover with a sound hole of the conventional earphone, thus creating a constant space. The earphone sound vibrates the cover (1) by beating the inside of the cover (1) and then the vibration is transmitted to a rubber drumhead (vibrating membrane) (2) which is attached onto the cover (1). The rubber drumhead (vibrating membrane) (2) of the earphone works as a soft earmuff and makes wearing feel soft and comfortable. The present invention relates to the earphone that converts sound into vibration and also isolates sound.

A drumhead for use in a percussion instrument is composed of multiple (e.g., two or three) plies of synthetic resin films, which are laminated together and are brought into close contact with each other when stretched across the opening of a hollow cylinder of a drum, for example. At least one air evacuation hole is formed at the center of the backside synthetic resin film or in proximity to the center of the backside synthetic resin film. Therefore, when the drumhead is stretched outwardly along a diameter direction of the opening of the hollow cylinder of the drum, remaining air between the films can be reliably evacuated from the air evacuation hole towards the exterior of the drumhead. Thus, it is possible to reduce unwanted loss in transmission of vibration between the films of the drumhead when beaten; hence, it is possible to realize good sound quality in the drum.

A drumhead tone control device employs an annular configuration of polyester film tightly adhered to the periphery of a drumhead membrane. The annular configuration of the tone control device includes radial and/or circumferential relief. The relieved tone control device disrupts transmission of vibrations reflected from the drumhead membrane/drum shell interface. Disruption of reflected vibrations improves the overall tonal quality of the drumhead while use of a tightly adhered polyester sheet close to the periphery of the drumhead playing surface minimizes undesirable alteration of the attack characteristics and fundamental tone of the drumhead.

Some embodiments provide a drum structural framework comprising a top shell mount, bottom shell mount, rod holders, and tension rods. The top shell mount and bottom shell mount are mounted to either ending edge of a drum shell disposed between the two mounts. A first set of the rod holders are coupled to the top shell mount and an aligned second set of the rod holders are coupled to the bottom shell mount. The tension rods link the two sets of rod holders without hindering resonance of the drum shell. Tuning assemblies on the rod holders adjust the distance separating the top shell mount from the bottom shell mount, thereby controlling the force imposed on the drum shell. Each rod holder includes one or more dampeners that isolate energy passing from the drumhead to the shell from also reverberating throughout the structural framework of the tension rods and rod holders.

A drum is formed using a drum shell having openings at both ends thereof, across which drumheads are stretched under tension. At least one air hole is formed at a prescribed position of the exterior surface of the drum shell, allowing air flow to occur between the inside and the outside of the drum shell. At least one tone color change member, which is composed of cloth and rubber sheets, is attached to the interior wall of the drum shell in connection with the air hole; hence, the air hole is closed by the tone color change member. Thus, it is possible to appropriately change the tone color of drum sound without substantially changing the size of the drum, which can be designed similar to any types of conventionally known drums.

A snare strainer includes first and second strainers for respectively holding both ends of a snare assembly (i.e., snares), which is controlled to move in close contact with or apart from a bottom-side drumhead of a snare drum. The first strainer includes a fixed base and a snare stretching member, which further includes a holding member for holding a snare connection member, an interconnection member, a pair of arms attached to both ends of the interconnection member, a pair of levers respectively attached to the arms, and a stretching rod that is bridged between the levers to support the intermediate portion of the snare connection member. The first strainer further includes a tension adjuster for adjusting the tension of the snare connection member, and a height adjuster for adjusting the height of the stretching rod.

A device for dampening a vibratable surface, such as a drumhead. By dampening the vibrations of a vibratable surface, such as a drumhead, the tone may be altered, as by removing some of the higher pitched overtones of the vibratable surface. The patch comprises a resilient, pliable adhesive body that has an intrical, flexible. And a preferred embodiment, the body is substantially oil free polyurethane mix and the flexible base is foam. A method of manufacturing the patch is provided. The method includes a step of combining, on a flat top surface such as a table, a curable liquid mix and an open cell foam, and allowing the mix to cure.

The present invention is directed to a laminated decorative wood drum shell with incorporated lugs having a smooth central cavity and the unique laminating process involved in the fabrication. A variety of hardwoods in varying colors and thickness will be use to construct the drum shell. Conventional threaded inserts will be inserted into the top and bottom of the lugs providing an attachment means for the top and bottom drum hoops or rims eliminating other attachment hardware while reducing the overall weight of the completed drum yet increasing both the structural integrity and durability, and enhancing the overall tonal quality of the drum. The top drumhead skin can be tightened separately from the bottom allowing for separate tuning of the heads.

A bass drum 10 has a hollow cylindrical shell 11, a drumhead 12 mounted on an opening end of the shell 11 to form a striking surface, and a striking surface attachment 13 provided on the reverse side of the drumhead 12. The striking surface attachment 13 is formed of an elastic sheet. At least a part of an outer area of the striking surface attachment 13 is fixed to the drumhead 12 and a central area of the striking surface attachment 13 is not fixed to the drumhead 12. As a result, the bass drum 10 can generate a struck sound having both deep bass sound and clear attack.

A drumhead with an outer ring member anchored to the outer periphery of a drum and having a threaded interior surface. An inner ring member having a threaded exterior surface matingly threaded to the interior surface of the outer ring.

Rotating the inner ring in a first direction relative to the outer ring, increases the tension exerted on the drum skin. Similarly, rotating the inner ring in a second direction relative to the outer ring, decreases the tension exerted on the drum skin.

Vertical pressure is exerted on the drum skin and drum ring when the inner ring is rotated in a first direction relative to the outer ring. Conversely, the pressure is released on the drum skin and the drum ring when the inner ring is rotated in a second direction relative to the outer ring.

A drumhead tuning rim apparatus for securing and tuning a drumhead on a drum shell of a drum, the apparatus comprising a plurality of housing grooved bearing wheels rotatably installed spaced along a rim of the drum, the rim being configured for seating over the drumhead on the drum shell, a plurality of lug grooved bearing wheels configured to be rotatably installed spaced about the drum shell substantially between the respective housing grooved bearing wheels, a tensioning cable configured for alternately passing between and about respective housing grooved bearing wheels and lug grooved bearing wheels substantially about the perimeter of the drum shell, and a means for selectively adjusting the tension in the tensioning cable.

A snare drum includes a strainer system which switches the position of a snare wire between an OFF position spaced from a lower drumhead and an ON position in contact with the lower drumhead. The strainer system includes a frame to which the snare wire is attached, and a pair of link mechanisms which are joined to the respective end portions of the frame and attach the respective end portions of the frame to a shell of the snare drum. After switching the position of the snare wire to the ON position, the position of the snare wire with respect to the lower drumhead is adjusted by operating an adjust screw of the second link mechanism.

The invention relates to a background audio determination method and device, a video editing method and device and computer equipment. The background audio determination method comprises the steps that a content time length sequence corresponding to target content is acquired, wherein the playing time length of content segments of the target content form the content time length sequence accordingto a content playing sequence; a drumbeat time interval sequence corresponding to each candidate audio is acquired, wherein the interval lengths between the drumheads in each candidate audio forms a corresponding drumhead time interval sequence according to the sequence of the drumheads in the candidate audio; target similarity between the content time length sequence and the drumhead time interval sequence corresponding to each candidate audio is acquired; and background audio corresponding to the target content is determined from a candidate audio set according to the target similarity corresponding to the candidate audios. Background audio recommendation can also be performed through the target similarity and a recommendation model based on artificial intelligence. By adopting the method, the matching degree of audio selection can be improved.

A silent drumhead, comprising:

• • more than one layer of thin-film drumhead having a plurality of through-holes distributed throughout thereon;
  • wherein the silent drumhead is formed by laminating the more than one layer of thin-film drumhead together; and
  • wherein the more than one layer of thin-film drumhead are adhered together by means of an adhesive layer(s) therebetween.

By using the plurality of through-holes to exhaust the air underneath the drumhead, vibrations generated when the drumhead is beaten are effectively reduced. This can mitigate the acoustic resonant effect of the drum shell to reduce the sound level when the drumhead is beaten. Furthermore, the thin-film drumheads that have been used in conventional drums can feed back the touch sense of beating in a totally realistic way to effectively overcome the shortcoming of conventional woven silent drumheads that they provide poor touch sense of beating.

A drumhead tuning rim system and method for securing and tuning a drumhead on a drum shell of a drum, comprising a drumhead tuning rim apparatus comprising a cable tension dial assembly configured for operably engaging a rim of the drum so as to increase or decrease tension on the rim, the rim being configured for seating over the drumhead on the drum shell, and an apparatus controller configured for operably interfacing with the drumhead tuning rim apparatus so as to selectively control the cable tension dial assembly and thereby adjust the overall pitch of the drumhead as by adjusting the tension on the rim.