136 FONIX FP40 Hearing Aid Analyzer
Part C: The RECD Calculation.
On a separate sheet of paper, subtract the REAR measurements (Part B) from the 2cc coupler mea
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surements (Part A). The differences at the required test frequencies are the RECD values. These
RECD correction factors can be used for DSL and TARGET 2cc (sections 7.7.1, 7.7.3) calculations.
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