pysptk.sptk.rapt¶
-
pysptk.sptk.
rapt
(x, fs, hopsize, min=60, max=240, voice_bias=0.0, otype='f0')[source]¶ RAPT - a robust algorithm for pitch tracking
Parameters: - x : array, dtype=np.float32
A whole audio signal
- fs : int
Sampling frequency.
- hopsize : int
Hop size.
- min : float, optional
Minimum fundamental frequency. Default is 60.0
- max : float, optional
Maximum fundamental frequency. Default is 240.0
- voice_bias : float, optional
Voice/unvoiced threshold. Default is 0.0.
- otype : str or int, optional
- Output format
- pitch
- f0
- log(f0)
Default is f0.
Returns: - f0 : array, shape(
np.ceil(float(len(x))/hopsize)
) Estimated f0 trajectory
Raises: - ValueError
- if invalid min/max frequency specified
- if invalid frame period specified (not in [1/fs, 0.1])
- if input range too small for analysis by get_f0
- RuntimeError
- problem in init_dp_f0()
- Please see also the RAPT code in SPTK for more detailed exception conditions.
See also
Notes
It is assumed that input array
x
has np.float32 dtype, while swipe assumes np.float64 dtype.Examples