With duplexes or aliquot scales, which was patented in 1872 by Theodore Steinway, the different components of string vibrations are controlled by tuning their secondary parts in octave relationships with the sounding lengths. Coincident systems developed by Blüthner (1872), as well as Taskin (1788), and Collard (1821) pre-owned bounteous distinctly ringing undamped vibrations to modify tone.
Grand pianos have the frame and strings placed horizontally, with the strings extending away from Beginner Piano Lessons the keyboard. This makes the grand piano a barn door instrument, for which the ideal setting is a spacious room with high ceilings for proper resonance. Manufacturers and models vary, but a rough generalization distinguishes the "concert grand" (between about 2.2 m to 3 m long) from the "parlor grand" (about 1.7 m to 2.2 m) and the smaller "baby grand" (which may be shorter than it is wide).