rapid staccato "Attack" part of the note. In the other two normal modes, strings do not all pull together, e.g., one pulls up while the other two pull down. There is a slow transfer of energy to the sounding board, generating a soft but near-constant sustain. See also Electronic tuner Inharmonicity References Further reading Ortiz-Berenguer, Luis I., F. Javier Casajús-Quirós, Marisol Torres-Guijarro, J.A. Beracoechea. Piano Transcription Using Pattern Recognition: Aspects On Parameter Extraction: Proceeds of The International Conference on Digital Audio Effects, Naples, October 2004. External links Five lectures on the acoustics of the piano A. H. Benade Sound Production in Pianos Robert W. Young, Inharmonicity of Plain Wire Piano Strings' The Journal of the Acoustical Society of America, vol 24 no. 3 (May 1952) "The Engineering of Concert Grand Pianos" by Richard Dain, FRENG D. Clausen, B. Hughes and W. Stuart "A design analysis of a Stuart and Sons grand piano frame" Acoustics Piano