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New filter for D-Star, BT=0.35

c4fmdemod
Andy CA6JAU 2017-04-02 18:03:36 -03:00
parent 7a042c10ad
commit dffc6f0a5a
1 changed files with 2 additions and 2 deletions
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DStarTX.cpp
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@ -28,8 +28,8 @@ const uint8_t BIT_SYNC = 0xAAU;
const uint8_t FRAME_SYNC[] = {0xEAU, 0xA6U, 0x00U};
// Generated using gaussfir(0.5, 4, 5) in MATLAB
static q15_t DSTAR_GMSK_FILTER[] = {0, 0, 0, 0, 8, 104, 760, 3158, 7421, 9866, 7421, 3158, 760, 104, 8}; // numTaps = 15, L = 5
// Generated using gaussfir(0.35, 1, 5) in MATLAB
static q15_t DSTAR_GMSK_FILTER[] = {0, 0, 0, 0, 212, 743, 1974, 3965, 6026, 6929, 6026, 3965, 1974, 743, 212}; // numTaps = 15, L = 5
const uint16_t DSTAR_GMSK_FILTER_PHASE_LEN = 3U; // phaseLength = numTaps/L
const q15_t DSTAR_LEVEL0 = -4000;