lpc

Functions

int main(int argc, char *argv[])

lpc [ option ] [ infile ]

-l int
- frame length \((1 \le L)\)
-m int
- order of coefficients \((0 \le M < L)\)
-e int
- warning type
  - 0 no warning
  - 1 output index
  - 2 output index and exit immediately
-q int
- input format
  - 0 amplitude spectrum in dB
  - 1 log amplitude spectrum
  - 2 amplitude spectrum
  - 3 power spectrum
  - 4 windowed waveform
infile str
- double-type windowed data sequence
stdout
- double-type linear predictive coefficients

The below example calculates the LPC coefficients of data.d.

frame < data.d | window | lpc -m 20 > data.lpc

This is equivalent to the following line.

frame < data.d | window | acorr -m 20 | levdur -m 20 > data.lpc

Parameters:

Returns:

0 on success, 1 on failure.