get_reference_curve#

ToneToNoiseRatio.get_reference_curve()#

Get the reference threshold curve, above which a tone is considered as prominent.

Returns:
numpy.ndarray

Reference curve with which to compare the TNR, as defined in the ECMA 418-1 and ISO 7779 standards. If the TNR is higher, then the tone is defined as prominent.

Return type:

ndarray