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
- xarray, dtype=np.float32
A whole audio signal
- fsint
Sampling frequency.
- hopsizeint
Hop size.
- minfloat, optional
Minimum fundamental frequency. Default is 60.0
- maxfloat, optional
Maximum fundamental frequency. Default is 240.0
- voice_biasfloat, optional
Voice/unvoiced threshold. Default is 0.0.
- otypestr or int, optional
- Output format
pitch
f0
log(f0)
Default is f0.
- Returns
- f0array, shape(
np.ceil(float(len(x))/hopsize)
) Estimated f0 trajectory
- f0array, shape(
- 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