FlexCurve
Layer-based headphone calibration, AutoEQ and FIR rendering
...It imports local TXT, CSV, Equalizer APO / Wavelet GraphicEQ, APO Parametric EQ, Melda FreeForm EQ CSV, and WAV FIR files as editable layers, previews changes in real time, blends active layers into an Average curve, and renders the result as Minimum, Natural, or Linear phase FIR.