Fixed DSP

core/src/dsp/demodulator.h

@@ -37,7 +37,7 @@ namespace dsp {
             _in = in;
             _sampleRate = sampleRate;
             _deviation = deviation;
-            phasorSpeed = (_sampleRate / _deviation) / (2 * FL_M_PI);
+            phasorSpeed = (2 * FL_M_PI) / (_sampleRate / _deviation);
             generic_block<FMDemod>::registerInput(_in);
             generic_block<FMDemod>::registerOutput(&out);
         }
@@ -55,7 +55,7 @@ namespace dsp {
             std::lock_guard<std::mutex> lck(generic_block<FMDemod>::ctrlMtx);
             generic_block<FMDemod>::tempStop();
             _sampleRate = sampleRate;
-            phasorSpeed = (_sampleRate / _deviation) / (2 * FL_M_PI);
+            phasorSpeed = (2 * FL_M_PI) / (_sampleRate / _deviation);
             generic_block<FMDemod>::tempStart();
         }
 
@@ -67,7 +67,7 @@ namespace dsp {
             std::lock_guard<std::mutex> lck(generic_block<FMDemod>::ctrlMtx);
             generic_block<FMDemod>::tempStop();
             _deviation = deviation;
-            phasorSpeed = (_sampleRate / _deviation) / (2 * FL_M_PI);
+            phasorSpeed = (2 * FL_M_PI) / (_sampleRate / _deviation);
             generic_block<FMDemod>::tempStart();
         }
 
@@ -87,8 +87,9 @@ namespace dsp {
             for (int i = 0; i < count; i++) {
                 currentPhase = fast_arctan2(_in->data[i].i, _in->data[i].q);
                 diff = currentPhase - phase;
-                if (diff > FL_M_PI)        { out.data[i] = (diff - 2 * FL_M_PI) * phasorSpeed; }
-                else if (diff <= -FL_M_PI) { out.data[i] = (diff + 2 * FL_M_PI) * phasorSpeed; }
+                if (diff > 3.1415926535f)        { diff -= 2 * 3.1415926535f; }
+                else if (diff <= -3.1415926535f) { diff += 2 * 3.1415926535f; }
+                out.data[i] = diff / phasorSpeed;
                 phase = currentPhase;
             }
 

core/src/dsp/filter.h

@@ -135,11 +135,12 @@ namespace dsp {
             count = _in->read();
             if (count < 0) { return -1; }
 
-            if (bypass || true) {
+            if (bypass) {
                 if (out.aquire() < 0) { return -1; }
                 memcpy(out.data, _in->data, count * sizeof(float));
                 _in->flush();
                 out.write(count);
+                return count;
             }
 
             if (isnan(lastOut)) {

core/src/dsp/resampling.h

@@ -29,14 +29,10 @@ namespace dsp {
 
             tapCount = _window->getTapCount();
             taps = (float*)volk_malloc(tapCount * sizeof(float), volk_get_alignment());
-            _window->createTaps(taps, tapCount);
-            for (int i = 0; i < tapCount / 2; i++) {
-                float tap = taps[tapCount - i - 1];
-                taps[tapCount - i - 1] = taps[i] * (float)_interp;
-                taps[i] = tap * (float)_interp;
-            }
+            _window->createTaps(taps, tapCount, _interp);
 
             buffer = (T*)volk_malloc(STREAM_BUFFER_SIZE * sizeof(T) * 2, volk_get_alignment());
+            memset(buffer, 0, STREAM_BUFFER_SIZE * sizeof(T) * 2);
             bufStart = &buffer[tapCount];
             generic_block<PolyphaseResampler<T>>::registerInput(_in);
             generic_block<PolyphaseResampler<T>>::registerOutput(&out);
@@ -86,12 +82,7 @@ namespace dsp {
             volk_free(taps);
             tapCount = window->getTapCount();
             taps = (float*)volk_malloc(tapCount * sizeof(float), volk_get_alignment());
-            window->createTaps(taps, tapCount);
-            for (int i = 0; i < tapCount / 2; i++) {
-                float tap = taps[tapCount - i - 1];
-                taps[tapCount - i - 1] = taps[i] * (float)_interp;
-                taps[i] = tap * (float)_interp;
-            }
+            window->createTaps(taps, tapCount, _interp);
             bufStart = &buffer[tapCount];
             generic_block<PolyphaseResampler<T>>::tempStart();
         }
@@ -117,9 +108,6 @@ namespace dsp {
             }
             int outIndex = 0;
             if constexpr (std::is_same_v<T, float>) {
-                for (int i = 0; i < count; i++) {
-                    buffer[tapCount + i] = 1.0f;
-                }
                 for (int i = 0; outIndex < outCount; i += _decim) {
                     out.data[outIndex] = 0;
                     for (int j = i % _interp; j < tapCount; j += _interp) {

core/src/dsp/window.h

@@ -6,7 +6,7 @@ namespace dsp {
         class generic_window {
         public:
             virtual int getTapCount() { return -1; }
-            virtual void createTaps(float* taps, int tapCount) {}
+            virtual void createTaps(float* taps, int tapCount, float factor = 1.0f) {}
         };
 
         class BlackmanWindow : public filter_window::generic_window {
@@ -48,7 +48,7 @@ namespace dsp {
                 return _M;
             }
 
-            void createTaps(float* taps, int tapCount) {
+            void createTaps(float* taps, int tapCount, float factor = 1.0f) {
                 float fc = _cutoff / _sampleRate;
                 if (fc > 1.0f) {
                     fc = 1.0f;
@@ -59,10 +59,11 @@ namespace dsp {
                 for (int i = 0; i < tapCount; i++) {
                     val = (sin(2.0f * FL_M_PI * fc * ((float)i - (tc / 2))) / ((float)i - (tc / 2))) * 
                         (0.42f - (0.5f * cos(2.0f * FL_M_PI / tc)) + (0.8f * cos(4.0f * FL_M_PI / tc)));
-                    taps[tapCount - i - 1] = val; // tapCount - i - 1
+                    taps[i] = val; // tapCount - i - 1
                     sum += val;
                 }
                 for (int i = 0; i < tapCount; i++) {
+                    taps[i] *= factor;
                     taps[i] /= sum;
                 }
             }

recorder/src/main.cpp

@@ -179,13 +179,13 @@ private:
         while (true) {
             int count = _this->audioStream->read();
             if (count < 0) { break; }
-            for (int i = 0; i < 1024; i++) {
+            for (int i = 0; i < 240; i++) {
                 sampleBuf[(i * 2) + 0] = _this->audioStream->data[i].l * 0x7FFF;
                 sampleBuf[(i * 2) + 1] = _this->audioStream->data[i].r * 0x7FFF;
             }
             _this->audioStream->flush();
-            _this->samplesWritten += 1024;
-            _this->writer->writeSamples(sampleBuf, 2048 * sizeof(int16_t));
+            _this->samplesWritten += 240;
+            _this->writer->writeSamples(sampleBuf, 480 * sizeof(int16_t));
         }
         delete[] sampleBuf;
     }

root_dev/config.json

@@ -1,9 +1,9 @@
 {
     "audio": {
         "Radio": {
-            "device": "default",
+            "device": "Speakers (Realtek High Definiti",
             "sampleRate": 48000.0,
-            "volume": 1.0
+            "volume": 0.51953125
         },
         "Radio 1": {
             "device": "Speakers (Realtek High Definition Audio)",

root_dev/module_list.json

@@ -1,6 +1,6 @@
 {
-    "Radio": "./radio/RelWithDebInfo/radio.dll",
-    "Recorder": "./recorder/RelWithDebInfo/recorder.dll",
-    "Soapy": "./soapy/RelWithDebInfo/soapy.dll",
-    "RTLTCPSource": "./rtl_tcp_source/RelWithDebInfo/rtl_tcp_source.dll"
+    "Radio": "./radio/Release/radio.dll",
+    "Recorder": "./recorder/Release/recorder.dll",
+    "Soapy": "./soapy/Release/soapy.dll",
+    "RTLTCPSource": "./rtl_tcp_source/Release/rtl_tcp_source.dll"
 }

root_dev/soapy_source_config.json

@@ -1,5 +1,5 @@
 {
-    "device": "Generic RTL2832U OEM :: 00000001",
+    "device": "HackRF One #0 901868dc282c8f8b",
     "devices": {
         "AirSpy HF+ [c852435de0224af7]": {
             "gains": {