Libav
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Functions | |
static float | tilt_factor (float *lpc_n, float *lpc_d) |
Get the tilt factor of a formant filter from its transfer function. | |
static void | postfilter (AMRContext *p, float *lpc, float *buf_out) |
Perform adaptive post-filtering to enhance the quality of the speech. |
static void postfilter | ( | AMRContext * | p, |
float * | lpc, | ||
float * | buf_out | ||
) | [static] |
Perform adaptive post-filtering to enhance the quality of the speech.
See section 6.2.1.
p | pointer to the AMRContext |
lpc | interpolated LP coefficients for this subframe |
buf_out | output of the filter |
Definition at line 906 of file amrnbdec.c.
Referenced by amrnb_decode_frame().
static float tilt_factor | ( | float * | lpc_n, |
float * | lpc_d | ||
) | [static] |
Get the tilt factor of a formant filter from its transfer function.
lpc_n | LP_FILTER_ORDER coefficients of the numerator |
lpc_d | LP_FILTER_ORDER coefficients of the denominator |
Definition at line 877 of file amrnbdec.c.
Referenced by postfilter().