Synthesis#
- pylstraight.synthesize(f0: ndarray, ap: ndarray, sp: ndarray, fs: int, *, frame_shift: float = 5.0, f0_format: str = 'linear', ap_format: str = 'a', sp_format: str = 'linear', syn_param: SynParam | None = None, seed: int | None = None) ndarray[source]#
Synthesize waveform from F0, aperiodicity, and spectrum.
- Parameters:
- f0np.ndarray [shape=(nframe,)]
The fundamental frequency.
- apnp.ndarray [shape=(nframe, nfreq)]
The aperiodicity.
- spnp.ndarray [shape=(nframe, nfreq)]
The spectrum.
- fsint
The sampling frequency in Hz.
- frame_shiftfloat
The frame shift in msec.
- f0_format[‘inverse’, ‘linear’, ‘log’]
The format of F0.
- ap_format[‘a’, ‘p’, ‘a/p’, ‘p/a’]
The format of aperiodicity.
- sp_format[‘db’, ‘log’, ‘linear’, ‘power’]
The format of spectrum.
- syn_paramSynParam or None
Control parameters for the synthesis. If given, override the other parameters. You have full control and responsibility.
- seedint or None
The random seed to make the results reproducible.
- Returns:
- outnp.ndarray [shape=(nsample,)]
The synthesized waveform.
Examples
>>> import pylstraight as pyls >>> import numpy as np >>> f, fs = 200, 16000 >>> x = np.sin(2 * np.pi * f / fs * np.arange(2400)) / 2 >>> f0 = np.ones(30) * f >>> ap = pyls.extract_ap(x, fs, f0) >>> sp = pyls.extract_sp(x, fs, f0) >>> y = pyls.synthesize(f0, ap, sp, fs) >>> y.shape (2400,)