For some instruments, teachers also train students in the use of the feet, as in the case of piano or other keyboard instruments that have damper or sustain pedals on the piano, the pedal keyboard on a pipe organ, and some drums and cymbals in the drum kit such as the bass drum pedal and the hi-hat cymbal pedal.

Silbermann's pianos were virtually direct copies of Cristofori's, with one important addition: Silbermann invented the forerunner of the modern damper pedal, which lifts all the dampers from the strings simultaneously.

The sostenuto pedal gives the pianist an ability to create what is called an organ pedal point by keeping a specific note's damper, or notes ' dampers, in their open position ( s ), allowing those strings to continue to sound while other notes can be played without continuing to resonate.

However, Schluter didn't just copy the Leedy design, he introduced several significant improvements: making the bars from aluminum instead of steel for a more " mellow " basic tone ; adjustments to the dimensions and tuning of the bars to eliminate the dissonant harmonics in the Leedy design ( further mellowing the tone ); and the introduction of a damper bar controlled by a foot pedal, enabling it to be played with more expression.

A foot pedal lowers the bar and allows notes to ring freely ; releasing the pedal engages the damper and stops any vibrating notes.

It must be sturdy enough to endure the torsional forces created by the damper / spring / pedal assembly and the stresses of repeated transport and playing, while still being light enough for easy transport.

The hinges for the damper bar are attached at each end, and the spring assembly and the pedal are usually attached in the middle.

The player must pay close attention to the use of the damper pedal in order to cleanly articulate and avoid multiple notes ringing unintentionally at the same time.

In this technique, the damper pedal is depressed marginally after the note is struck, shortly enough after so that the recently struck note continues to ring, but long enough after so that the previous note has stopped ringing.

Another damper technique is " half pedaling ", where the pedal is depressed just enough to remove the spring pressure from the bars, but not enough so the pad has lost contact with the bars.

Half pedaling — a technique involving a partial depression of the damper pedal — is also often used to simulate the shorter sustain of the early nineteenth century pedal.

It included many more string courses for extended range and incorporated a damper pedal which allowed for more dynamic control.

Also, a device which allows the performer to raise all the dampers ( like the modern damper pedal ), and another that will only raise the treble dampers ( a typical feature on many early pianos ).

The sustain pedal is the electronic equivalent of a piano's damper pedal.

Stein may have been the first to produce a fully functional damper pedal, in which the player can lift all the dampers from the strings.

Around the back panel were headphones, stereo line out, pedal inputs for damper, portamento and program up were available.

It is equipped with a heavy frame for more dynamic power and many added string courses for an extended range of sounds and a damper pedal to allow more dynamic control.

The damper mechanism is a sensitive feature of the instrument, as the pad must contact all notes evenly and produce no extraneous noises, and require minimal foot or toe motion.

However, crankshaft torsional vibration, present to some degree in all engines, is sufficient to require the use of a harmonic damper at the accessory end of the crankshaft.

Almost all cars will have one mass damper, some may have 10 or more.

Progressive rebound bumpers have also been adopted, while the damper rates, front and rear toe-in and the relative angle between springs and dampers have all been altered.

Performance modifications included a " hot " camshaft ( in reality, just the base model 455 camshaft from the ' 70s with. 440 "/. 440 " lift and 196 °/ 208 ° duration at. 050 "), stiffer valve springs, a larger vibration damper ( same as all ' 73 -' 79 350s, 403s, and 455s ), a Y-pipe dual-outlet exhaust system, and richer secondary metering rods in the carburetor.

The engine, torque-tube, trans-axle, and damper mounts were all rubber-isolated from the frame.

Luckily for the Autobots, all among their ranks are outfitted with damper devices that reduce the cannon ’ s effect, but produce enough pyrotechnics to keep Punch ’ s cover from being blown.

Because simultaneous closure of all dampers might harm the furnace or air handler, this style of damper is often designed to only obstruct a portion of the air duct, for example, 75 %.

Regardless of the style of damper employed, the systems are often designed so that when no thermostat is calling for air, all dampers in the system are opened.

Stockbridge damper s on power lines. High-tension lines often have small barbell-shaped Stockbridge dampers hanging from the wires to reduce the high-frequency, low-amplitude oscillation termed flutter.

* One Wall Centre in Vancouver — It employs tuned liquid column dampers, at the time of its installation, a unique form of tuned mass damper.

This type of damper is analogous to the tuned mass dampers used in skyscrapers to reduce the building motion during an earthquake.

This required modifications to the damper and spring rates of the bogies and the fitting of inter-coach " car coupler dampers " to further improve damping between the vehicles.

Automatic or motorized dampers may also be controlled by a solenoid, and the degree of air-flow calibrated, perhaps according to signals from the thermostat going to the actuator of the damper in order to modulate the flow of air-conditioned air in order to effect climate control.

This damper can switch the electrical power to control additional " slave " dampers, minimizing the electrical load on the damper's control circuitry and power transformer

For vacuum-or pneumatically-operated zone dampers, the thermostat usually switches the pressure or vacuum on or off, causing a spring-loaded rubber diaphragm to move and actuate the damper.

Like the second style of electrical zone damper, these dampers may allow adjustment of the " closed " position.

The dampers may also support positions other than fully open or fully closed and are usually capable of reporting their current position and, often, the temperature and volume of the air flowing past the smart damper.

The links are attached to the damper such that the dampers can be released manually for testing purposes.

Finally, the coil was wound on a light-former made of conductive metal, which acted as a damper.

The damper had a reservoir for water that wet a cloth, and the clerk wiped the cloth over the tissues on which copies were to be made.

Isabella died in childbirth in 1498, putting a damper on Portuguese ambitions to rule in Spain, which various rulers had harbored since the reign of King Ferdinand I ( 1367 – 1383 ).

* Other principles use magnetic field variation magneto rheological damper which changes its fluid characteristics through an electromagnet.

During 1971 the spring rates and damper settings were altered along with the front suspension bushes which reduced the bounciness of the ride and low speed ride harshness which had generated press criticism at the time of the Cortina III's launch.

The MacPherson strut is a type of car suspension system which uses the axis of a telescopic damper as the upper steering pivot.

The stack damper contained within works like a butterfly valve and regulates draft ( pressure difference between air intake and air exit ) in the furnace, which is what pulls the flue gas through the convection section.

As the damper closes, the amount of heat escaping the furnace through the stack decreases, but the pressure or draft in the furnace increases which poses risks to those working around it if there are air leakages in the furnace, the flames can then escape out of the firebox or even explode if the pressure is too great.

Pneumatic thermostats typically provide output / branch / post-restrictor ( for single-pipe operation ) pressures of 3-15psi which is piped to the end device ( valve / damper actuator / Pneumatic-Electric switch, etc.

At Hockenheim, the mass damper was deemed illegal by the FIA, because the mass was not rigidly attached to the chassis and, due to the influence it had on the pitch attitude of the car, which in turn significantly affected the gap under the car and hence the ground effects of the car, to be a movable aerodynamic device and hence as a consequence, to be illegally influencing the performance of the aerodynamics.

The speed at which weight transfer occurs as well as through which components it transfers is complex and is determined by many factors including but not limited to roll center height, spring and damper rates, anti-roll bar stiffness and the kinematic design of the suspension links.

The front suspension employed a MacPherson strut with a conventional coil spring mounted offset of the central axis of the damper which was designed and intended to greatly smooth the travel of the suspension, and rear suspension consisted of the Lotus-designed Chapman strut.

* It is a matter of minutes for the home mechanic to replace an old sphere — which includes the " spring " and " damper " in one — using a simple tool that can be home-made.

Three driving modes are featured, ranging from fuel-conserving Eco to Sport S and Sport S + which facilitate more sporty transmission shifting and engine throttle settings, as well as suspension damper and steering adjustments.

The 1942 ruling did, however, create a nervous legal atmosphere regarding these other forms of sterilizations, and put a heavy damper on sterilization rates which had boomed since the Buck v. Bell ruling in 1927.

To quote William Heynes, " The Metalastik damper consists of a steel plate to which is bonded, through a thick rubber disk, a malleable iron floating weight.

However, the report stated that both superheater types had serious drawbacks, with the Schmidt system featuring a damper control on the superheater header that caused hot gases to condense into sulphuric acid, which caused pitting and subsequent weakening of the superheater elements.

( When piezo pickups are installed in the bridge of the instrument, it is desirable to apply an extra damper pad beneath the second fret which only spans half the length of the fret.

If shimmy can not be designed out of the system, a device known as a steering damper may be used which is essentially a notch filter designed to dampen the shimmy at its known natural frequency.