Crate linear_predictive_coding

Functions

• calc_lpc_by_burg
  Burg法
• calc_lpc_by_high_speed
  https://qiita.com/hirokisince1998/items/fd50c0515c7788458fce Levinson-Durbin法
• calc_lpc_by_low_speed
• correlate
  自己相関関数を求める関数