[{"data":1,"prerenderedAt":339},["ShallowReactive",2],{"docs-nav-en":3,"docs-page-en-tuning-guide":49},[4,9,13,17,21,25,29,33,37,41,45],{"slug":5,"nav":6,"order":7,"draft":8,"fallback":8},"index","Overview",1,false,{"slug":10,"nav":11,"order":12,"draft":8,"fallback":8},"getting-started","Getting started",2,{"slug":14,"nav":15,"order":16,"draft":8,"fallback":8},"tuning-guide","Tuning a whole instrument",3,{"slug":18,"nav":19,"order":20,"draft":8,"fallback":8},"instruments","Instruments",4,{"slug":22,"nav":23,"order":24,"draft":8,"fallback":8},"sessions","Sessions and passes",5,{"slug":26,"nav":27,"order":28,"draft":8,"fallback":8},"calibration","Calibration",6,{"slug":30,"nav":31,"order":32,"draft":8,"fallback":8},"beating-curves","Beating curves",7,{"slug":34,"nav":35,"order":36,"draft":8,"fallback":8},"reports","Tuning reports",8,{"slug":38,"nav":39,"order":40,"draft":8,"fallback":8},"settings","Settings",9,{"slug":42,"nav":43,"order":44,"draft":8,"fallback":8},"troubleshooting","Troubleshooting",10,{"slug":46,"nav":47,"order":48,"draft":8,"fallback":8},"faq","FAQ",11,{"data":50,"body":54,"toc":324},{"title":15,"description":51,"nav":15,"order":16,"eyebrow":52,"lede":53},"","Documentation","One pass through the box, one trip inside it, and a second pass to prove the work.",{"type":55,"children":56},"root",[57,66,72,79,92,97,103,108,114,119,124,129,135,168,185,191,196,201,207,212,224,229,241,246,252,264,274,280,313,319],{"type":58,"tag":59,"props":60,"children":62},"element","h2",{"id":61},"before-you-open-anything",[63],{"type":64,"value":65},"text","Before you open anything",{"type":58,"tag":67,"props":68,"children":69},"p",{},[70],{"type":64,"value":71},"Tune the instrument closed, playing normally, exactly as it will be played. A\nreed measured with the block out and the case open is a reed measured in a\ndifferent instrument.",{"type":58,"tag":73,"props":74,"children":76},"h3",{"id":75},"measure-the-reference-do-not-assume-it",[77],{"type":64,"value":78},"Measure the reference, do not assume it",{"type":58,"tag":67,"props":80,"children":81},{},[82,84,90],{"type":64,"value":83},"Fix A4 before the pass starts and leave it alone. But fix it to ",{"type":58,"tag":85,"props":86,"children":87},"strong",{},[88],{"type":64,"value":89},"this\ninstrument's",{"type":64,"value":91}," A, not to a number you like: play its A4 and read what it actually\nis. New boxes are often 442, plenty are 440, and old instruments turn up at 435\nor 432. You are tuning the accordion to itself.",{"type":58,"tag":67,"props":93,"children":94},{},[95],{"type":64,"value":96},"The app freezes the reference for the length of a pass, because a pass measured\nagainst a moving reference tells you nothing you can file by.",{"type":58,"tag":73,"props":98,"children":100},{"id":99},"set-the-tolerance",[101],{"type":64,"value":102},"Set the tolerance",{"type":58,"tag":67,"props":104,"children":105},{},[106],{"type":64,"value":107},"Tolerance is the line between \"leave it\" and \"touch it\". It belongs to the\ninstrument, not to you: a concert box is held tighter than a folk one. Set it\nonce on the instrument and let the app judge against it rather than judging each\nnumber by eye.",{"type":58,"tag":59,"props":109,"children":111},{"id":110},"recording-the-pass",[112],{"type":64,"value":113},"Recording the pass",{"type":58,"tag":67,"props":115,"children":116},{},[117],{"type":64,"value":118},"Work the keyboard in order, one note at a time, holding each until the reading\nsettles and locks. Keep the bellows pressure steady and roughly what the\ninstrument gets played at.",{"type":58,"tag":67,"props":120,"children":121},{},[122],{"type":64,"value":123},"The recorder stamps every reading with the bellows direction, so set the\ndirection before you start and change it when you turn around. Every note has a\npress reed and a draw reed; they are different tongues and they drift apart on\ntheir own, so both get recorded and both get tuned. The direction control sits on\nthe toolbar once a session is open.",{"type":58,"tag":67,"props":125,"children":126},{},[127],{"type":64,"value":128},"If you would rather be told what to play than remember where you are, the\ncalibration sweep walks the range for you note by note.",{"type":58,"tag":59,"props":130,"children":132},{"id":131},"reading-the-errors",[133],{"type":64,"value":134},"Reading the errors",{"type":58,"tag":67,"props":136,"children":137},{},[138,140,145,147,152,154,159,161,166],{"type":64,"value":139},"The table gives you, per reed: where it is (",{"type":58,"tag":85,"props":141,"children":142},{},[143],{"type":64,"value":144},"Curr",{"type":64,"value":146},"), where it should be\n(",{"type":58,"tag":85,"props":148,"children":149},{},[150],{"type":64,"value":151},"Goal",{"type":64,"value":153},"), and the distance between them (",{"type":58,"tag":85,"props":155,"children":156},{},[157],{"type":64,"value":158},"Error",{"type":64,"value":160},", printed as ",{"type":58,"tag":85,"props":162,"children":163},{},[164],{"type":64,"value":165},"Err",{"type":64,"value":167}," on the\nreport). That distance is what you file by. Amber means the app has judged it out\nagainst your tolerance.",{"type":58,"tag":67,"props":169,"children":170},{},[171,173,177,179,183],{"type":64,"value":172},"You can have the app say this either way round, in Settings: read ",{"type":58,"tag":85,"props":174,"children":175},{},[176],{"type":64,"value":144},{"type":64,"value":178}," and\ndrive it to the goal, or read ",{"type":58,"tag":85,"props":180,"children":181},{},[182],{"type":64,"value":158},{"type":64,"value":184}," and drive it to zero. Same measurement,\ntwo conventions. Pick the one you have in your hands.",{"type":58,"tag":73,"props":186,"children":188},{"id":187},"what-not-to-fix",[189],{"type":64,"value":190},"What not to fix",{"type":58,"tag":67,"props":192,"children":193},{},[194],{"type":64,"value":195},"A wide beat in a musette is not an error. If the beating curve says the pair\nshould beat at two hertz and it beats at two hertz, it is right, however far each\nreed sits from the bare scale.",{"type":58,"tag":67,"props":197,"children":198},{},[199],{"type":64,"value":200},"The same logic runs the other way. Two reeds both three cents sharp still beat at\nexactly the right rate, and nobody will hear it. The beat is what the ear\nnotices; hold that tighter than either reed's own pitch.",{"type":58,"tag":59,"props":202,"children":204},{"id":203},"filing-do-not-file-to-zero",[205],{"type":64,"value":206},"Filing: do not file to zero",{"type":58,"tag":67,"props":208,"children":209},{},[210],{"type":64,"value":211},"This is the part that costs reeds.",{"type":58,"tag":67,"props":213,"children":214},{},[215,217,222],{"type":64,"value":216},"The moment you open the accordion and lift the block, every reed's pitch moves -\nby around three cents, which is several times your tolerance. It moves back when\nyou reassemble. So the number in front of you on the bench is ",{"type":58,"tag":85,"props":218,"children":219},{},[220],{"type":64,"value":221},"not",{"type":64,"value":223}," the number\nyou are tuning to.",{"type":58,"tag":67,"props":225,"children":226},{},[227],{"type":64,"value":228},"Work it out from the report:",{"type":58,"tag":230,"props":231,"children":235},"pre",{"className":232,"code":234,"language":64},[233],"language-text","target on the table = what it reads on the table − the Err from the report\n",[236],{"type":58,"tag":237,"props":238,"children":239},"code",{"__ignoreMap":51},[240],{"type":64,"value":234},{"type":58,"tag":67,"props":242,"children":243},{},[244],{"type":64,"value":245},"The table reading is your working number. The report supplies the offset. File\nuntil the reed reads the target on the bench, put it back, and it will be right\nin the box. Filing to zero on the table guarantees it is wrong once assembled.",{"type":58,"tag":73,"props":247,"children":249},{"id":248},"which-reed-first",[250],{"type":64,"value":251},"Which reed first",{"type":58,"tag":67,"props":253,"children":254},{},[255,257,262],{"type":64,"value":256},"Within one note, bring the ",{"type":58,"tag":85,"props":258,"children":259},{},[260],{"type":64,"value":261},"reference reed",{"type":64,"value":263}," - the one your curve puts at pitch",{"type":58,"tag":265,"props":266,"children":267},"ul",{},[268],{"type":58,"tag":269,"props":270,"children":271},"li",{},[272],{"type":64,"value":273},"to its own target first. Then bring the others in against it until the beats\nare right. The reference reed is tuned absolutely; the rest are tuned relative to\nit. Which reed that is, is yours to choose; nothing in the app assumes it.",{"type":58,"tag":73,"props":275,"children":277},{"id":276},"which-way-to-file",[278],{"type":64,"value":279},"Which way to file",{"type":58,"tag":67,"props":281,"children":282},{},[283,285,290,292,297,299,304,306,311],{"type":64,"value":284},"Metal off the ",{"type":58,"tag":85,"props":286,"children":287},{},[288],{"type":64,"value":289},"tip",{"type":64,"value":291}," lightens the free end and the pitch ",{"type":58,"tag":85,"props":293,"children":294},{},[295],{"type":64,"value":296},"rises",{"type":64,"value":298},". Metal off\nthe ",{"type":58,"tag":85,"props":300,"children":301},{},[302],{"type":64,"value":303},"base",{"type":64,"value":305}," makes the tongue more flexible and the pitch ",{"type":58,"tag":85,"props":307,"children":308},{},[309],{"type":64,"value":310},"falls",{"type":64,"value":312},". Take it\nevenly across the width, and do not score a sharp notch: an abrupt change of\nsection is where reeds break. Beyond that, the filing is your craft and not the\napp's business - SmeggTuner's job ends at handing you a number and its sign.",{"type":58,"tag":59,"props":314,"children":316},{"id":315},"the-second-pass",[317],{"type":64,"value":318},"The second pass",{"type":58,"tag":67,"props":320,"children":321},{},[322],{"type":64,"value":323},"Close it, record again, and lay the two passes over each other. The comparison is\nthe point: what improved, what got worse, what fell out of tolerance, and what\nyou can stop touching. It is the only honest way to tell whether an afternoon of\nfiling helped.",{"title":51,"searchDepth":12,"depth":12,"links":325},[326,330,331,334,338],{"id":61,"depth":12,"text":65,"children":327},[328,329],{"id":75,"depth":16,"text":78},{"id":99,"depth":16,"text":102},{"id":110,"depth":12,"text":113},{"id":131,"depth":12,"text":134,"children":332},[333],{"id":187,"depth":16,"text":190},{"id":203,"depth":12,"text":206,"children":335},[336,337],{"id":248,"depth":16,"text":251},{"id":276,"depth":16,"text":279},{"id":315,"depth":12,"text":318},1784488007325]