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The Ear Trumpet
Patented: History of Inventions
The History of Ar Trompets
The first scientific descriptions of ar trumpets come from the late sixteenth century, early seventeenth century. They were made in a variety of materials including animal horn and metal. Depending on the materials you use, the instrument will resignate at certain frequencies which will also help to amplify some of the sound. Some scientists did not agree about the actual shape - it can have ainol as tube, like a trumpet or spiral form.
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