| http://www.w3.org/ns/prov#value | - The coefficient ap can be written in the form [Equation] If the ruling is perfect except that each groove may be displaced from its theoretical position by a small fraction ?? of the spacing L/N and if p is a multiple of N, bpm=(ap)perf exp(-2??ip??m/N), where (ap)perf is the value of ap in the absence of groove displacements.
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