Music Writing Device Records Notes Played on Piano (Oct, 1930)
Music Writing Device Records Notes Played on Piano
IF STRAY melodies are always running through your mind and you are averse to setting them down on music paper at the moment of your inspiration, you will find this music writing piano, shown with its inventor, at the right, Dr. Moritz Stoehr, a great help in recording the tunes and keeping them in memory for publication.
The recording device, which writes on a revolving roll of paper in a series of dots and dashes every note played on the piano, consists of a typewriter attachment which can be built into the piano. A touch of the finger on the piano keys is transmitted through a system of pulleys to corresponding small levers which print on the revolving roll of paper marks proportionate in value to the time value of the note. Spaces between notes mark the time value of the rest.
The typewriter-piano keyboard consists of 88 keys to correspond with the 88 keys of a conventional piano keyboard, and are compressed within a space of not over 15 inches. Each key contains a hammer, or striker, which produces in sound the note that will be recorded on the paper.
The music writer also includes a transposing device—a portable keyboard of a conventional type which is superimposed on the regular keyboard. By moving it up or down the scale to the desired key, a composition can be automatically transposed, the indirect pressure effecting the change in key. The selection is played in the regular key— superimposed keyboard does the transposing.