Using the maximum frequency response of pitch taps instead of maxabs

1 files changed, 24 insertions, 0 deletions

diff --git a/silk/tables_LTP.c b/silk/tables_LTP.c
index b0cff443..0e6a0254 100644
--- a/silk/tables_LTP.c
+++ b/silk/tables_LTP.c
@@ -267,6 +267,30 @@ const opus_int8 * const silk_LTP_vq_ptrs_Q7[NB_LTP_CBKS] = {
     (opus_int8 *)&silk_LTP_gain_vq_2[0][0]
 };
 
+/* Maximum frequency-dependent response of the pitch taps above,
+   computed as max(abs(freqz(taps))) */
+static const opus_uint8 silk_LTP_gain_vq_0_gain[8] = {
+      46,      2,     90,     87,     93,     91,     82,     98
+};
+
+static const opus_uint8 silk_LTP_gain_vq_1_gain[16] = {
+     109,    120,    118,     12,    113,    115,    117,    119,
+      99,     59,     87,    111,     63,    111,    112,     80
+};
+
+static const opus_uint8 silk_LTP_gain_vq_2_gain[32] = {
+     126,    124,    125,    124,    129,    121,    126,     23,
+     132,    127,    127,    127,    126,    127,    122,    133,
+     130,    134,    101,    118,    119,    145,    126,     86,
+     124,    120,    123,    119,    170,    173,    107,    109
+};
+
+const opus_uint8 * const silk_LTP_vq_gain_ptrs_Q7[NB_LTP_CBKS] = {
+    &silk_LTP_gain_vq_0_gain[0],
+    &silk_LTP_gain_vq_1_gain[0],
+    &silk_LTP_gain_vq_2_gain[0]
+};
+
 const opus_int8 silk_LTP_vq_sizes[NB_LTP_CBKS] = {
     8, 16, 32
 };