What is Doorbell:
It is known as doorbell to the mechanical or electrical device that warns or calls, which produces sound when pressed. The doorbell is made up of a bell and a hammer that hits it moved by electricity, spring or other agent. These are widely used in the home, office, business, among others.
Also, in linguisticsTimbre is the quality of the voice or sounds, which differentiates those of the same tone, and depends on the shape and nature of the elements that enter into vibration.
Regarding music and physicsTimbre is one of the four qualities of sound along with pitch, duration and intensity. Timbre is the way an instrument sounds; it can be high or low depending on the height of the note and volume. Likewise, as with a person’s voice, the timbre allows us to distinguish its different tones.
On the other hand, stamps are called different stamps such as: postal stamps, also known as stamps, are proof of prior payment for shipments made by mail, they are generally square and gummed that are stuck on the envelope, or the seal that appears on some public documents stamped by the State.
for heraldrythe expression timbre refers to the insignia that is used above a coat of arms to indicate the degree of dignity or nobility that the individual possesses.