def undbv(x):
    iform = save_input_form(x)
    x = carray(x)
    up = 10.**(x/20.)
    return restore_input_form(up, iform)
Convert ``x`` from dB to voltage.
dataset/ETHPy150Open ggventurini/python-deltasigma/deltasigma/_undbv.py/undbv