Topic
Drumhead
About: Drumhead is a research topic. Over the lifetime, 253 publications have been published within this topic receiving 2077 citations. The topic is also known as: drum skin.
Papers published on a yearly basis
Papers
TL;DR: This work transcends existing theoretical constructions which necessarily break reciprocity, by pairing nodal knots with their mirror image partners in a fully reciprocal setting and allows for reconstruction of the Seifert surface and hence knot topological invariants like the Alexander polynomial.
Abstract: Knots are intricate structures that cannot be unambiguously distinguished with any single topological invariant. Momentum space knots, in particular, have been elusive due to their requisite finely tuned long-ranged hoppings. Even if constructed, probing their intricate linkages and topological "drumhead" surface states will be challenging due to the high precision needed. In this work, we overcome these practical and technical challenges with RLC circuits, transcending existing theoretical constructions which necessarily break reciprocity, by pairing nodal knots with their mirror image partners in a fully reciprocal setting. Our nodal knot circuits can be characterized with impedance measurements that resolve their drumhead states and image their 3D nodal structure. Doing so allows for reconstruction of the Seifert surface and hence knot topological invariants like the Alexander polynomial. We illustrate our approach with large-scale simulations of various nodal knots and an experiment that maps out the topological drumhead region of a Hopf-link.
64 citations
TL;DR: In this article, 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.
Abstract: 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.
51 citations
TL;DR: A pad for an electronic drum has a vibration responsive plate mounted on a cushion and has on its upper surface a relatively thin buffer pad, the plate having cushioning means on its outer edge between it and peripheral supporting structure, so that the feel of the drumhead is quite natural to the player and that vibrations from the frame or supporting structure are insulated from the plate.
Abstract: A pad for an electronic drum has a vibration responsive plate that is mounted on a cushion and has on its upper surface a relatively thin buffer pad, the plate having cushioning means on its outer edge between it and peripheral supporting structure, so that the feel of the drumhead is quite natural to the player and that vibrations from the frame or supporting structure are insulated from the plate, and that the plate vibrations are not adversely affected, the plate carrying a microphone or other sound pick-up means.
44 citations
TL;DR: In this paper, a pad for an electronic drum has a vibration responsive plate mounted on a cushion and has on its upper surface a relatively thin buffer pad, the plate having cushioning means on its outer edge between it and peripheral supporting structure, and a drumhead stretched directly over the buffer pad and retained by a cover member held in spaced relation from the plate.
Abstract: A pad for an electronic drum has a vibration responsive plate that is mounted on a cushion and has on its upper surface a relatively thin buffer pad, the plate having cushioning means on its outer edge between it and peripheral supporting structure, and a drumhead stretched directly over the buffer pad and retained by a cover member held in spaced relation from the plate, so that the feel of the pad is quite natural to the player and that vibrations from the frame or supporting structure are insulated from the plate, and that the plate vibrations are not adversely affected, the plate carrying a microphone or other sound pick-up means.
41 citations
TL;DR: In this article, a conversion kit enables a conventional drum to be transferred into an electronically triggered drum, which includes a circularly shaped foam pad and brackets connectable to the peripheral sidewall of the conventional drum in order to support the panel and pad.
Abstract: A conversion kit enables a conventional drum to be transferred into an electronically triggered drum. The kit includes a circularly shaped foam pad, a circularly shaped plywood panel residing beneath the pad and brackets connectable to the peripheral sidewall of the conventional drum in order to support the panel and pad beneath the drumhead. A pair of transducers are mounted to a bottom surface of the panel, one located near the center of the drumhead, and the other located adjacent to the sidewall. Wire leads connect the transducers to jacks mounted in the sidewall of the drum, with one jack being longer than the other to distinguish between the transducer mounting locations. Preferably, the kit also includes a shock absorber mounted between the second transducer and the panel.
41 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 8 |
| 2019 | 4 |
| 2018 | 3 |
| 2017 | 9 |
| 2016 | 6 |