pysptk.sptk.lsp2sp

pysptk.sptk.lsp2sp(lsp, fftlen=256, has_gain=True, loggain=False, fs=None, itype=0)[source]

LSP to spectrum

Parameters
lsparray

LSP

fftlenint, optional

FFT length

has_gainbool, optional

Whether input LPC has gain at the index 0 or not. Default is True.

loggainbool, optional

If True, it’s assumed that input LPC has loggain and convert it to linear gain. Default is False.

fsint, optional

Sampling frequency. Default is None and unused.

itypeint, optional
Input LPC format
  1. normalized frequency (0 ~ pi)

  2. normalized frequency (0 ~ 0.5)

  3. frequency (kHz)

  4. frequency (Hz)

Default is 0.

Returns
sparray, shape

Spectrum. ln|H(z)|.