A small bell will not continue to "ring" if held or pressed. This is because the continuing ringing sound is caused by vibrations (resonance) within the metal shell. Once struck, the energized metal will continue to give off sound waves for some time. But the resonance can be dampened if a non-vibratory object (hand, cloth, wood, rubber) comes in contact with the metal : these objects do not vibrate well and will absorb the kinetic energy from the metal.
Placing your hand on a bell that has just been rung stops the sound because it absorbs the vibrations that are causing the bell to resonate, effectively damping the sound wave. This reduces the sound energy being transmitted from the bell to the surrounding air, resulting in a quicker dissipation of sound.
When the ringing bell of a bicycle is touched, the metal vibrations that produce the sound are dampened by the contact with a solid surface or object, disrupting the sound wave propagation and causing the sound to stop. This interference interrupts the resonance necessary for the bell to continue ringing.
To change the softness of the sound of a french horn, change the position of your hand in the bell. The more hand, the more muffled and soft the sound. Use less hand and it will be a more open, direct sound.
when you placed your hand over your chest you could feel sound 'dubbed'
You may be referring to an iconic 1915 photograph of Thomas Edison, with his hand placed over the crack in the bell, as if he is trying to hold the bell together.
Ringing a hand bell requires mechanical energy, which is the sum of the potential energy and kinetic energy involved in moving the bell. When you lift the bell and release it, the potential energy stored in the raised position is converted into kinetic energy as the bell swings back and forth, producing the ringing sound. The energy required to ring the hand bell is proportional to its mass, the height it is lifted, and the speed at which it is released.
percussion family . . . the clapper strikes the casting to make the sound
The most drastic way is to place various mutes in the bell or you can just place the palm of your hand over the bell while you play and wave your hand in a Wah Wah fashion.
Vincent Bell's Water Sound is a guitar technique that involves muting the string with the left hand while plucking the string with the right hand to create a watery sound effect. To achieve this, lightly touch the string above the fret with your left hand while plucking the string, creating a harmonically dampened sound resembling water droplets. Experiment with the pressure and position of your left hand to manipulate the effect.
I've been playing music for around 7 years. when i first started off as a trumpeter i was also puzzled why hornists insert their hand into bell of their french horn. Now I've been playing the French Horn for 5 years. When i insert my hand into the bell, it will changes the pitch, becoming sharp or flat. The more i insert my hand inside the flatter it becomes the lesser i do it, the sharper. Inserting your hand changes the type of sound too, it gives the horn a better sound, a rich and warm sound that's desired. you could also "stop" the horn by covering the whole opening of the bell. It gives a muted like sound. Other than that, it'll look weird if a horn player plays the horn with one hand eh? It'll make the player look funny. i nearly forgot about this, you can lift the horn with your right hand rather than letting it rest on your lap. Most professionals do this. p.s. Dont mess with the horn.
I think it is the french horn, when the New England Brass Band comes to my school, the lady that plays the french horn sticks her hand in the horn.
No. Hand has a short A sound as in can and sand.