{
  "title": "Piano hammer and key measurements from two KTH studies",
  "description": "Measurements of a grand piano action from two KTH studies: one value per row, with its qualifier, unit, test conditions, source and page. Values are cited, not re-measured; figures from the studies are not reproduced.",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "creator": "Tricks of Ear and Eye",
  "page": "https://tricksofearandeye.com/instruments/piano-hammer/",
  "derived_from": [],
  "method": "",
  "data_credit": [
    "Values cited from Askenfelt & Jansson 1988, \"From touch to string vibrations - the initial course of the piano tone\", STL-QPSR 29(1): 31-109, KTH Royal Institute of Technology and Askenfelt 1991, \"Measuring the motion of the piano hammer during string contact\", STL-QPSR 32(4): 19-34, KTH Royal Institute of Technology; numbers only, with page references"
  ]
}