Minimum of the absolute percentage error for two tempi values allowing the factors
1, 2, 3, 1/2, and 1/3.
If an estimate of None is given, this function returns NaN.
When averaged, results correspond to MAPE2.
See also ape1.
- Parameters
reference_tempo (float) – a references tempo, must not be 0
estimated_tempo (Optional[float]) – an estimated tempo
- Returns
the minimal absolute percentage error for the factors 1, 2, 3, 1/2, and 1/3.
- Return type
float