Patent Application
20130047826
1.Technical Field
The present invention relates generally to cymbals for making music and more particularly to an electronic high-hat cymbal controller.
2. Background of the Related Art
Electronic drum sets generally consist of controllers whose look and feel emulates the instruments of an acoustic drum set and electronic sound generators which take input from these controllers and produce electronically synthesized drum set sounds.
A typical electronic drum set will include some number of “electronic cymbals”, that is, controllers whose shape and design makes them suitable for emulating the playing characteristics of various acoustic cymbals.
One important cymbal type is the high-hat. An acoustic high-hat consists of two cymbals mounted in a stand with a foot pedal. The cymbals are mounted with the concave sides facing each other and the upper cymbal can be moved down and up by pressing and releasing the foot pedal. Typically, the top cymbal is struck by the performer and the resulting sound varies, depending on whether the upper cymbal is down and in contact with the lower cymbal (referred to as closed) or up and not in contact (referred to as open). Subtle effects in timbre are available to the performer with the hi-hat cymbal partially closed (nearly touching), lightly closed, closed hard and with the upper cymbals struck in such a way that it swings down and strikes the lower cymbal. In addition, the hi-hat cymbal can be made to “speak” by pressing the pedal quickly and holding it closed (often called a “tchk” or “chik”) and by pressing the pedal till the cymbals touch and releasing quickly (referred to as a “foot splash” or “pedal splash”).
In current practice, the electronic implementation of a high-hat cymbal controller typically takes the form of two controllers, one that emulates the upper cymbal and one that emulates the action of the foot pedal.
The upper cymbal controller is similar to the controllers for other cymbals. In the simplest form, it has a sensor, typically a piezo-electric device, which indicates how hard the cymbal has been struck. It is possible, as with other cymbals, to add additional detectors to indicate where the cymbal has been struck (bell, bow or edge). It is also possible, as with other cymbals, to add a detector that will detect a choke. On cymbals that are not a high-hat pair, this is often a membrane switch that detects the performer damping the cymbal vibration with his hand. Typically, the lower cymbal of the acoustic high-hat pair is not present in an electronic drum set.
The foot pedal controller frequently takes the form of a stand-alone foot-pedal, completely separated from the cymbal(s). This device detects how far the pedal is depressed by the performer and sends this data to the drum synthesizer.
The completely separate electronic foot pedal has a number of deficiencies. First, since the pedal does not move the upper cymbal up or down, the playing feel of the high-hat is quite different from the acoustic instrument it is meant to emulate. Second, the feel of the foot pedal itself is quite different from that of an acoustic high-hat cymbal. An acoustic high-hat cymbal has a spring, which can be emulated by a stand-alone pedal. The acoustic high-hat pedal also moves the mass of the upper cymbal and control shaft, which is not emulated by a stand-alone pedal. Furthermore, the feel of the cymbals touching and compressing is poorly emulated by the stand-alone foot pedal.
Finally, the visual presentation of the separated cymbal and stand-alone pedal pair is quite different from an acoustic high-hat.
A number of manufacturers have sought to address these deficiencies by mounting a single electronic cymbal controller on an acoustic high-hat stand. While this approach is an improvement over the stand-alone pedal, a number of deficiencies remain.
In particular, a single cymbal plays differently than two cymbals. When an acoustic high-hat is open, the upper cymbal swings freely when struck. When it closes, this swinging motion is suppressed and the resulting stiffness increases as the cymbals are further pressed together.
In addition, existing products require either a custom high-hat stand or a complete separate electronic drum set with an existing high-hat stand. For the drummer who switches between his electronic set (often a practice set) and acoustic set, this adds cost or inconvenience.
The electronic high-hat cymbal controller of the present invention solves the problems of the prior art by providing an upper cymbal and lower cymbal connected to a high-hat stand and operable with a foot pedal. A foot pedal control module detects the position of the upper cymbal relative to the foot pedal control cymbal and generates and transmits a control signal proportional to the plunger position to a drum synthesizer.
Among the objects of the electronic high-hat cymbal controller of the present invention is the provision for an electronic high-hat cymbal controller that includes two cymbals, emulating the behavior of an acoustic high-hat cymbal.
Another object of the present invention is an electronic high-hat cymbal controller that mounts the cymbals and the pedal controller onto existing acoustic high-hat cymbal stands.
Yet another object of the present invention is an electronic high-hat cymbal controller that has long life-expectancy.
These and other features, aspects, and advantages of the present invention will become better understood with reference to the following description, appended claims, and accompanying drawings where:
is a side schematic view of a second embodiment the electronic hi-hat cymbal controller; and
Referring now to
The upper cymbal 14 may include additional sensors on it to detect various strikes. For instance, the upper cymbal may 14 include a strike sensor 20, such as a piezo sensor, that will detect a strike anywhere on the cymbal and return a value proportional to the velocity of the strike. The upper cymbal 14 may also include bell strike sensor 22 and edge strike sensor 24. Edge strike sensors 24 may also be used to detect a choke operation (i.e. silencing the cymbal), and the condition of the upper cymbal 14 and lower cymbal 18 touching. The sensors 20, 22, 24 may be force sensing resistors (“FSR”), piezo sensors, membrane switches and the like. The material of the upper cymbal 14 may be plastic or metal, which preferably has sound dampening material added.
The lower cymbal 18 can be plastic, metal (such as brass), other materials, and composites thereof The lower cymbal 18 is generally not configured to detect strikes, but the lower cymbal 18 may include such sensors 20, 22, 24 mentioned above for the upper cymbal 14 as desired. The lower cymbal 18 can have a hole in it to allow cables from the upper cymbal 14 and a pedal control module to be routed to the drum synthesizer module, as is known in the art. One skilled in the art would appreciate that other cable routing schemes may be used.
The upper cymbal 14 is mounted to the shaft 16 of the hi-hat cymbal stand 12.
The lower cymbal 18 is mounted to the hi-hat cymbal stand 12 in a conventional manner as an acoustic hi-hat cymbal. Cables to the sensors may be loosely fastened (with hook-and-loop cable straps or equivalent) to the hi-hat stand 12, thus limiting the rotation of the lower cymbal 18.
The controller 10 consists of two main elements. The first is a spring 26, standing between the cymbals 14, 18 on the hi-hat stand moveable shaft 16. Closing the hi-hat compresses the spring 26. When the hi-hat is fully closed, i.e. the upper cymbal 14 and lower cymbal 18 are contacting and resting on one another, the spring 26 is roughly half-compressed. Preferably, an inch or so of upper cymbal 14 “travel” on the hi-hat cymbal shaft 16 should generate a roughly linear increase in spring pressure.
A ring-shaped FSR 28 sits underneath the lower cymbal 18. The FSR 28 exhibits decreasing electrical resistance with increasing pressure as shown in the graph of
In the course of open-to-closed motion, the FSR 28 will experience pressure as shown in the graph of
Between touching the spring 26 and touching the lower cymbal 18, the pressure will increase in a roughly linear fashion due to spring compression. Because both cymbals 14, 18 are relatively rigid, when they touch, there will be a sharp increase in pressure. The sharpness of the change in pressure is primarily a function of the padding and washers enclosing the FSR 28, described further below.
Referring back to
In an alternate geometry shown in
Similarly, in another embodiment 200 shown in
As long as the sensor assembly is positioned such that the force of the compression of the spring 26, 126, 226 by the upper cymbal 14, 114, 214 can be measured, the sensor assembly 26, 126, 226 may be positioned as desired.
Referring to
Like the first embodiment 10, the alternate embodiment shown at 300 includes a stand 312 with a movable shaft 316. A foot pedal is included to actuate the shaft 316 as is known in the art. The upper cymbal 314 is mounted to the shaft 316 and a lower cymbal 318 is mounted to the stand 312. One or more strike 320, bell strike 322, and edge strike 324 sensors may be included on the upper cymbal 314 (and/or lower cymbal 318) as desired. Like the first embodiment 10, the alternate embodiment 300 includes a sensor assembly 334 that has an FSR 328 sandwiched between a pair of hard spacers 330, which are sandwiched between a pair of soft spacers 332. The thickness and rigidity (or pliability) of the spacers 330, 332 may be varied to fine tune the sensitivity of the FSR 328.
Referring not to
When the upper cymbal strikes the lower cymbal, there is a brief increase in pressure at the FSR 18, 128, 228, 328. This pressure can be erroneously interpreted by the drum module as a “closed” high hat pair, which causes a “choke” of the open or half-open cymbal sound. This artifact is quite unlike acoustic high hat set ups and is unacceptable.
This artifact can be eliminated in the following manner as shown in
A number of sensors 436 are attached to the outer upper surface 438 of the lower cymbal 418. These sensors 436 are positioned such that all sensors 418 will be actuated whenever the upper cymbal 14, 114, 214, 314 presses uniformly on the lower cymbal 418. In this embodiment, three sensors 436 are placed equidistantly around the rim 440 of the low cymbal 418. In this embodiment, membrane switches are used. Other momentary contact switches can be used and those skilled in the art will readily imagine alternate configurations and numbers of sensors 418. Each sensor 436 includes a switch actuator 442 that is configured to press down on a switch cover 444. A membrane switch 446 is located underneath the switch cover 444 and is supported by an optional layer of felt 448, which can improve sensitivity of the membrane switch 446. When the top cymbal 14, 114, 214, 314 presses down on the switch actuators 442 and switch covers 444, which are made of rubber, or a rubber-like material, in this embodiment, the membrane switches 446 close.
Referring to
FSR circuit 448 (see also, 28, 128, 228, 328).When the membrane switches 446 are closed, the resistance presented to the drum module goes to nearly zero, regardless of the FSR resistance. However, since the membrane switches 446 are in series to each other, this only happens if all the membrane switches 446 are closed simultaneously.
The condition of all membrane switches 446 being closed will occur when the high hat stand pedal is depressed sufficiently to bring the upper and lower cymbals into contact. However, since the membrane switches 446 are distributed around the rim 440 of the lower cymbal 418, cymbals that strike each other from a “half-open” position cannot close all the membrane switches 446.
The system is the calibrated in such a way that the drum module does not interpret a resistance value as “closed” unless it is the value presented by the closed switches. In this way, only a closure achieved by pressing the high hat controller pedal will be interpreted as a closure event.
Note that several variants of the described embodiment are readily contrived. For instance, a variety of switch types could be used. As an example, multiple FSR elements, positioned as the membrane switches 446 can also work. The sensors 436 can be similarly attached to the top cymbal 14, 114, 214, 314, instead. With the sensors 436 added, the FSR may be integrated inside the cymbals, rather than below the lower cymbal.
As can be readily seen, this method can be used to improve the reliability of any system the uses resistance to detect the vertical position of the top cymbal.
Therefore, it can be seen that the present invention provides a unique solution to the problem of providing a high-hat cymbal controller system that is cost effective, convenient and that emulates as closely as possible the playing feel and response of acoustic high-hat cymbals.
It would be appreciated by those skilled in the art that various changes and modifications can be made to the illustrated embodiments without departing from the spirit of the present invention. All such modifications and changes are intended to be within the scope of the present invention.
This patent document claims priority to earlier filed U.S. Provisional Patent Application Ser. No. 61/529,284, filed on Aug. 31, 2011, the entire contents of which are incorporated by reference herein.
| Number | Date | Country | |
|---|---|---|---|
| 61529284 | Aug 2011 | US |
