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jLynx 2023-05-19 08:16:05 +12:00 • committed by GitHub
parent 7aca7ce74d
commit 033c4e9a5b
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599 changed files with 70746 additions and 66896 deletions
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70
firmware/baseband/dsp_hilbert.cpp
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@ -25,33 +25,57 @@
namespace dsp {
HilbertTransform::HilbertTransform() {
n = 0;
n = 0;
sos_i.configure(half_band_lpf_config);
sos_q.configure(half_band_lpf_config);
sos_i.configure(half_band_lpf_config);
sos_q.configure(half_band_lpf_config);
}
void HilbertTransform::execute(float in, float &out_i, float &out_q) {
float a = 0, b = 0;
switch (n) {
case 0: a = in; b = 0; break;
case 1: a = 0; b = -in; break;
case 2: a = -in; b = 0; break;
case 3: a = 0; b = in; break;
}
float i = sos_i.execute(a) * 2.0f;
float q = sos_q.execute(b) * 2.0f;
switch (n) {
case 0: out_i = i; out_q = q; break;
case 1: out_i = -q; out_q = i; break;
case 2: out_i = -i; out_q = -q; break;
case 3: out_i = q; out_q = -i; break;
}
void HilbertTransform::execute(float in, float& out_i, float& out_q) {
float a = 0, b = 0;
n = (n + 1) % 4;
switch (n) {
case 0:
a = in;
b = 0;
break;
case 1:
a = 0;
b = -in;
break;
case 2:
a = -in;
b = 0;
break;
case 3:
a = 0;
b = in;
break;
}
float i = sos_i.execute(a) * 2.0f;
float q = sos_q.execute(b) * 2.0f;
switch (n) {
case 0:
out_i = i;
out_q = q;
break;
case 1:
out_i = -q;
out_q = i;
break;
case 2:
out_i = -i;
out_q = -q;
break;
case 3:
out_i = q;
out_q = -i;
break;
}
n = (n + 1) % 4;
}
} /* namespace dsp */