Definition at line 51 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), ff_lpc_calc_ref_coefs(), and ff_lpc_init().

Definition at line 52 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), and ff_lpc_init().

Definition at line 53 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), and ff_lpc_init().

Definition at line 54 of file lpc.h.

Referenced by ff_lpc_end(), and ff_lpc_init().

Definition at line 55 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), ff_lpc_calc_ref_coefs(), and ff_lpc_init().

Apply a Welch window to an array of input samples.

The output samples have the same scale as the input, but are in double sample format.

Parameters

data input samples

len number of input samples

w_data output samples

Definition at line 65 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), ff_lpc_calc_ref_coefs(), ff_lpc_init(), and ff_lpc_init_x86().

Perform autocorrelation on input samples with delay of 0 to lag.

Parameters

data input samples. constraints: no alignment needed, but must have at least lag*sizeof(double) valid bytes preceding it, and size must be at least (len+1)*sizeof(double) if data is 16-byte aligned or (len+2)*sizeof(double) if data is unaligned.

len number of input samples to process

lag maximum delay to calculate

autoc output autocorrelation coefficients. constraints: array size must be at least lag+1.

Definition at line 80 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), ff_lpc_calc_ref_coefs(), ff_lpc_init(), and ff_lpc_init_x86().