pysptk.sptk.lpc

pysptk.sptk.lpc(windowed, order=25, min_det=1e-06, use_scipy=True)[source]

Linear prediction analysis

Parameters
windowedarray, shape (frame_len)

A windowed frame

orderint, optional

Order of LPC. Default is 25.

min_detfloat, optional

Mimimum value of the determinant of normal matrix. Default is 1.0e-6.

use_scipybool

Use scipy’s solve_toeplitz implementation or not. Default is True. This would be more numerically stable than SPTK.

Returns
aarray, shape (order + 1)

LPC

Raises
ValueError
  • if negative min_det is specified

RuntimeError
  • if error happened in levdur