Normal Mucus Before Period

Plan automatically based view of the roller

Plan automatic seat of the roller view, originally uploaded by yuricim .

1920 Plan automatically kept in the classroom of the Musicology Department of Cremona.

Source www.ammi-italia.com/page5/page30/page30.html

"In 1887 the Welte patented the pneumatic system of recording and playing music on rolls of perforated paper to replace the cylinder studs.
This was a 'revolutionary innovation for the mechanical music, the rolls of perforated paper, in fact, had a greater ease of implementation and better handling than the spiked cylinders, and were also more adaptable to industrial production, which was largely developed in those years .[....] In 1890, he applied the system to Welte piano rolls perforated, but the yield was rather mechanical and expressionless, the conditions for a breakthrough in this direction took the form in 1901, when the company went into administration Edwin Welte and Karl, the third generation of the family, and Bockisch Karl, who had married a sister of Edwin. Bockisch Edwin Welte and Karl, in collaboration with Hugo Popper, were the architects of the invention that, once again. revolutionized the mechanical music: The Reproducing Piano. Unlike the common plan mechanical, or cylinder studded with perforated paper, the reproducing piano lets you play what is the most striking of the piano, which is the expression, understood as the possibility to graduate the loudness of the notes produced. The complete system includes a fairly sophisticated machine, connected to a modified piano, recording the live performance of an artist with ink marks on a paper roll, this recording will be corrected and it is apparent that a roll " master ", which is then reproduced through specific drills in hundreds or thousands of copies of perforated rolls, which were sold to the public. The breeding machine, which was given the name of Welte-Mignon, is able to "read" the holes by a pneumatic system in depression, pressing the keys on the piano and the expression encoded on special lines of perforation, which control a device, also tire which sizes the intensity with which the keys strike the strings. The expression in the Welte-Mignon reproducing as in others, does not allow to grade the intensity of the individual keys, but it acts on two groups of them, bass and soprano. This, which might seem a limitation in the return of 'expressiveness, actually allows a good approximation of the actual. The Welte-Mignon was patented in 1904, and was intended by Edwin Welte, was not intended for public executions, but for private use, allowing you to listen to the esecuzion of the great masters in their own home. Great musicians they recorded rolls for Welte-Mignon, who had thousands of titles in our catalog. "