public class A2NLSF extends A2NLSF_constants
BIN_DIV_STEPS_A2NLSF_FIX, MAX_ITERATIONS_A2NLSF_FIX, OVERSAMPLE_COSINE_TABLE, QPoly
Constructor and Description |
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A2NLSF() |
Modifier and Type | Method and Description |
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(package private) static int |
SKP_Silk_A2NLSF_eval_poly(int[] p,
int x,
int dd)
Helper function for A2NLSF(..).
|
(package private) static void |
SKP_Silk_A2NLSF_init(int[] a_Q16,
int[] P,
int[] Q,
int dd) |
(package private) static void |
SKP_Silk_A2NLSF_trans_poly(int[] p,
int dd)
Helper function for A2NLSF(..).
|
(package private) static void |
SKP_Silk_A2NLSF(int[] NLSF,
int[] a_Q16,
int d)
Compute Normalized Line Spectral Frequencies (NLSFs) from whitening filter coefficients.
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static void SKP_Silk_A2NLSF_trans_poly(int[] p, int dd)
p
- Polynomialdd
- Polynomial order (= filter order / 2 )static int SKP_Silk_A2NLSF_eval_poly(int[] p, int x, int dd)
p
- Polynomial, QPolyx
- Evaluation point, Q12dd
- Orderstatic void SKP_Silk_A2NLSF_init(int[] a_Q16, int[] P, int[] Q, int dd)
static void SKP_Silk_A2NLSF(int[] NLSF, int[] a_Q16, int d)
NLSF
- Normalized Line Spectral Frequencies, Q15 (0 - (2^15-1)), [d]a_Q16
- Monic whitening filter coefficients in Q16 [d]d
- Filter order (must be even)
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