when was the trumpet invented and by whom
Trumpet The earliest trumpets date back to 1500Â BC and earlier. The bronze and silver trumpets from Tutankhamun's grave in Egypt, bronze lurs from Scandinavia, and metal trumpets from China date back to this period.[6] Trumpets from the Oxus civilization (3rd millennium BC) of Central Asia have decorated swellings in the middle, yet are made out of one sheet of metal, which is considered a technical wonder.[7]
Phonograph The use of a flat recording surface instead of a cylindrical one was an obvious alternative which thought-experimenter Charles Cros initially favored and which practical experimenter Thomas Edison and others actually tested in the late 1870s and early 1880s. The oldest surviving example is a copper electrotype of a recording cut into a wax disc in 1881. The commercialization of sound recording technology was initially aimed at use for business correspondence and transcription into writing, in which the cylindrical form offered certain advantages, the storage of large numbers of records seemed unlikely, and the ease of producing multiple copies was not a consideration.