Sweep bug fixed. There is still something weird with RtAudio: only one channel is outputting signal.

CMakeLists.txt

@@ -9,6 +9,7 @@ option(LASP_DOUBLE_PRECISION "Compile as double precision floating point" ON)
 option(LASP_HAS_RTAUDIO "Compile with RtAudio Daq backend" ON)
 option(LASP_HAS_ULDAQ "Compile with UlDaq backend" ON)
 option(LASP_BUILD_TUNED "Tune build for current machine" OFF)
+option(LASP_WITH_OPENMP "Use OpenMP parallelization" ON)
 
 # Use ccache if available
 find_program(CCACHE_PROGRAM ccache)
@@ -42,6 +43,8 @@ set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
     set(LASP_DEBUG True)
+    # This does not work nicely with RtAudio
+    # add_definitions(-D_GLIBCXX_DEBUG)
 else()
     set(LASP_DEBUG False)
 endif()
@@ -65,8 +68,12 @@ add_definitions(-DLASP_MAX_NFFT=33554432) # 2**25
 # ####################################### End of user-adjustable variables section
 include(OSSpecific)
 
-# Enable openmp
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-type-limits")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS} -Wall -Wextra -Wno-type-limits")
+
+# Enable openmp, if set
+if(LASP_WITH_OPENMP)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+endif()
 
 set(CMAKE_C_FLAGS_RELEASE  "-O3 -flto -mfpmath=sse -march=x86-64 -mtune=native \
 -fdata-sections -ffunction-sections -fomit-frame-pointer -finline-functions")
@@ -78,7 +85,6 @@ add_subdirectory(third_party/carma)
 if(LASP_FFT_BACKEND STREQUAL "FFTW")
     find_library(fftw3 REQUIRED NAMES fftw fftw3)
     set(LASP_FFT_LIBS "fftw3")
-message("LASP_FFT_LIBS = ${LASP_FFT_LIBS}")
 
 elseif(LASP_FFT_BACKEND STREQUAL "Armadillo")
 endif()

src/lasp/CMakeLists.txt

@@ -28,6 +28,7 @@ pybind11_add_module(lasp_cpp MODULE lasp_cpp.cpp
     pybind11/lasp_daq.cpp
     pybind11/lasp_deviceinfo.cpp
     pybind11/lasp_pyindatahandler.cpp
+    pybind11/lasp_siggen.cpp
     )
 
 target_link_libraries(lasp_cpp PRIVATE lasp_device_lib lasp_dsp_lib

src/lasp/device/lasp_daqdata.h

@@ -60,7 +60,7 @@ public:
    */
   DaqData() : DaqData(0, 0, DataTypeDescriptor::DataType::dtype_int8) {}
   virtual ~DaqData() = default;
-  DaqData& operator=(const DaqData&) = default;
+  DaqData &operator=(const DaqData &) = default;
 
   /**
    * @brief Return pointer to the raw data corresponding to a certain sample.
@@ -74,6 +74,12 @@ public:
     return &(_data.data()[sw * (frame + channel * nframes)]);
   }
 
+  void setSlow(const us frame, const us channel, const int8_t* val) {
+    for(us i=0;i<sw;i++) {
+    _data.at(i+sw*(frame + channel*nframes)) = val[i];
+    }
+  }
+
   /**
    * @brief Return the total number of bytes
    *

src/lasp/device/lasp_rtaudiodaq.cpp

@@ -327,14 +327,14 @@ class RtAudioDaq : public Daq {
 
     if (outputBuffer) {
       std::vector<uint8_t *> ptrs;
-      ptrs.reserve(neninchannels);
+      ptrs.reserve(nenoutchannels);
-      DaqData data(nenoutchannels, nFramesPerBlock, dtype);
 
       /* outCallback */
       for (int ch = 0; ch <= getHighestOutChannel(); ch++) {
+        /* DEBUGTRACE_PRINT(outchannel_config.at(ch).enabled); */
         if (outchannel_config.at(ch).enabled) {
-          ptrs.push_back(&static_cast<uint8_t *>(
+          ptrs.push_back(&(static_cast<uint8_t *>(
-                outputBuffer)[sw * nenoutchannels * ch * nFramesPerBlock]);
+                outputBuffer)[sw * nenoutchannels * ch * nFramesPerBlock]));
         }
       }
       DaqData d{nenoutchannels, nFramesPerBlock, dtype};

src/lasp/device/lasp_streammgr.cpp

@@ -89,6 +89,25 @@ bool StreamMgr::inCallback(const DaqData &data) {
   return true;
 }
 
+void StreamMgr::setSiggen(std::shared_ptr<Siggen> siggen) {
+
+  DEBUGTRACE_ENTER;
+  checkRightThread();
+
+  std::scoped_lock<std::mutex> lck(_siggen_mtx);
+
+  // If not set to nullptr, and a stream is running, we update the signal
+  // generator by resetting it.
+  if (isStreamRunningOK(StreamType::output) && siggen) {
+    const Daq *daq = getDaq(StreamType::output);
+    assert(daq != nullptr);
+    // Reset the signal generator.
+    siggen->reset(daq->samplerate());
+  }
+  _siggen = siggen;
+}
+
+#define DEBUG_FILLDATA 0
 /**
  * @brief Converts from double precision floating point to output signal in
  * non-interleaving format.
@@ -100,48 +119,45 @@ bool StreamMgr::inCallback(const DaqData &data) {
  * @return
  */
 template <typename T> bool fillData(DaqData &data, const vd &signal) {
+  /* DEBUGTRACE_ENTER; */
   assert(data.nframes == signal.size());
 
+  /* cerr << "SFSG: data.nframes:" << data.nframes << endl; */
+  /* cerr << "SFSG: data.nchannels:" << data.nchannels << endl; */
   T *res = reinterpret_cast<T *>(data.raw_ptr());
   if (std::is_floating_point<T>()) {
     for (us ch = 0; ch < data.nchannels; ch++) {
       for (us frame = 0; frame < data.nframes; frame++) {
+#if DEBUG_FILLDATA == 1
+        DEBUGTRACE_PRINT("SLOW flt");
+        data.setSlow(frame, ch,
+                     reinterpret_cast<const int8_t *>(&signal[frame]));
+#else
         res[ch * data.nframes + frame] = signal[frame];
+#endif
       }
     }
   } else {
     for (us ch = 0; ch < data.nchannels; ch++) {
       for (us frame = 0; frame < data.nframes; frame++) {
-        res[ch * data.nframes + frame] =
+        const T val = (signal[frame] * std::numeric_limits<T>::max());
-            (signal[frame] * std::numeric_limits<T>::max());
+#if DEBUG_FILLDATA == 1
+        data.setSlow(frame, ch, reinterpret_cast<const int8_t *>(&val));
+#else
+        res[ch * data.nframes + frame] = val;
+#endif
       }
     }
   }
 
   return true;
 }
-
-void StreamMgr::setSiggen(std::shared_ptr<Siggen> siggen) {
-  checkRightThread();
-
-  std::scoped_lock<std::mutex> lck(_siggen_mtx);
-  _siggen = siggen;
-
-  // If not set to nullptr, and a stream is running, we update the signal
-  // generator by resetting it.
-  if (isStreamRunningOK(StreamType::output) && siggen) {
-    const Daq *daq = getDaq(StreamType::output);
-    assert(daq != nullptr);
-    // Reset the signal generator.
-    _siggen->reset(daq->samplerate());
-  }
-}
-
 bool StreamMgr::outCallback(DaqData &data) {
 
   /* DEBUGTRACE_ENTER; */
 
   std::scoped_lock<std::mutex> lck(_siggen_mtx);
+
   if (_siggen) {
     vd signal = _siggen->genSignal(data.nframes);
     switch (data.dtype) {
@@ -237,6 +253,8 @@ void StreamMgr::startStream(const DaqConfiguration &config) {
 
   if (isOutput) {
     if (_siggen) {
+      DEBUGTRACE_PRINT("Resetting _siggen with new samplerate of ");
+      DEBUGTRACE_PRINT(daq->samplerate());
       _siggen->reset(daq->samplerate());
     }
     outCallback = std::bind(&StreamMgr::outCallback, this, _1);
@@ -248,6 +266,9 @@ void StreamMgr::startStream(const DaqConfiguration &config) {
 
   if (isInput) {
     _inputStream = std::move(daq);
+    if (daq->duplexMode()) {
+      assert(!_outputStream);
+    }
   } else {
     assert(isOutput);
     _outputStream = std::move(daq);
@@ -291,7 +312,7 @@ void StreamMgr::removeInDataHandler(InDataHandler &handler) {
 }
 
 Daq::StreamStatus StreamMgr::getStreamStatus(const StreamType type) const {
-  DEBUGTRACE_ENTER;
+  /* DEBUGTRACE_ENTER; */
 
   checkRightThread();
   // Default constructor, says stream is not running, but also no errors

src/lasp/dsp/lasp_siggen.cpp

@@ -1,21 +1,25 @@
+/* #define DEBUGTRACE_ENABLED */
+#include "debugtrace.hpp"
 #include "lasp_siggen.h"
 #include "lasp_mathtypes.h"
 #include <cassert>
 #include <type_traits>
+using std::cerr;
+using std::endl;
 
-inline d level_amp(d level_dB){
+inline d level_amp(d level_dB) { return pow(10, level_dB / 20); }
-  return pow(10, level_dB/20);
-}
 
 using mutexlock = std::scoped_lock<std::mutex>;
 
 vd Siggen::genSignal(const us nframes) {
+
+  DEBUGTRACE_ENTER;
   mutexlock lck(_mtx);
 
   vd signal(nframes, arma::fill::value(_dc_offset));
   if (!_muted) {
-    vd signal_dynamic = _level_linear*genSignalUnscaled(nframes);
+    vd signal_dynamic = _level_linear * genSignalUnscaled(nframes);
-    if(_filter) {
+    if (_filter) {
       _filter->filter(signal_dynamic);
     }
     signal += signal_dynamic;
@@ -23,20 +27,24 @@ vd Siggen::genSignal(const us nframes) {
 
   return signal;
 }
-void Siggen::setFilter(std::shared_ptr<Filter>& filter) {
+void Siggen::setFilter(std::shared_ptr<Filter> filter) {
+  DEBUGTRACE_ENTER;
   mutexlock lck(_mtx);
   _filter = filter;
 }
 void Siggen::setDCOffset(const d offset) {
+  DEBUGTRACE_ENTER;
   mutexlock lck(_mtx);
   _dc_offset = offset;
 }
-void Siggen::setLevel(const d level,bool dB) {
+void Siggen::setLevel(const d level, bool dB) {
+  DEBUGTRACE_ENTER;
   mutexlock lck(_mtx);
   _level_linear = dB ? level_amp(level) : level;
 }
 void Siggen::reset(const d newFs) {
+  DEBUGTRACE_ENTER;
   mutexlock lck(_mtx);
-  fs = newFs;
+  _fs = newFs;
   resetImpl();
 }

src/lasp/dsp/lasp_siggen.h

@@ -8,17 +8,27 @@ class StreamMgr;
 class DaqData;
 
 /**
- * @brief Signal generation base class
+ * \addtogroup dsp
+ * @{
+ */
+/**
+ * \defgroup siggen Signal generators 
+ * @{
+ */
+
+/**
+ * @brief Signal generation abstract base class. Implementation is required for
+ * resetImpl(), genSignalUnscaled() and destructor.
  */
 class Siggen {
 private:
   std::shared_ptr<Filter> _filter;
   d _dc_offset = 0, _level_linear = 1;
   bool _muted = false;
-  std::mutex _mtx;
 
 protected:
-  d fs = -1;
+  std::mutex _mtx;
+  d _fs = 0;
 
   virtual void resetImpl() = 0;
   virtual vd genSignalUnscaled(const us nframes) = 0;
@@ -32,7 +42,7 @@ public:
    *
    * @param f The filter to install.
    */
-  void setFilter(std::shared_ptr<Filter>& f);
+  void setFilter(std::shared_ptr<Filter> f);
 
   /**
    * @brief Set a linear DC offset value to the signal
@@ -42,7 +52,8 @@ public:
   void setDCOffset(d offset);
 
   /**
-   * @brief Mute the signal. Passes through the DC offset.
+   * @brief Mute the signal. Passes through the DC offset. No lock is hold. If
+   * it just works one block later, than that is just the case.
    *
    * @param mute if tre
    */
@@ -75,3 +86,6 @@ public:
    */
   vd genSignal(const us nframes);
 };
+
+/** @} */
+/** @} */

src/lasp/dsp/lasp_siggen_impl.cpp

@@ -5,11 +5,14 @@
 // Description:
 // Signal generators implementation
 //////////////////////////////////////////////////////////////////////
-/* #define TRACERPLUS (-5) */
+#define DEBUGTRACE_ENABLED
+#include "debugtrace.hpp"
 #include "lasp_siggen_impl.h"
 #include "debugtrace.hpp"
 #include "lasp_mathtypes.h"
 
+using rte = std::runtime_error;
+
 DEBUGTRACE_VARIABLES;
 
 /** The fixed number of Newton iterations t.b.d. for tuning the sweep start and
@@ -23,13 +26,14 @@ vd Noise::genSignalUnscaled(us nframes) {
 }
 void Noise::resetImpl() {}
 
-Sine::Sine(const d freq) : omg(2 * arma::datum::pi * freq) {}
+Sine::Sine(const d freq) : omg(2 * arma::datum::pi * freq) { DEBUGTRACE_ENTER;}
 
 vd Sine::genSignalUnscaled(const us nframes) {
+  /* DEBUGTRACE_ENTER; */
   const d pi = arma::datum::pi;
   vd phase_vec =
-      arma::linspace(phase, phase + omg * (nframes - 1) / fs, nframes);
+    arma::linspace(phase, phase + omg * (nframes - 1) / _fs, nframes);
-  phase += omg * nframes / fs;
+  phase += omg * nframes / _fs;
   while (phase > 2 * arma::datum::pi) {
     phase -= 2 * pi;
   }
@@ -37,10 +41,13 @@ vd Sine::genSignalUnscaled(const us nframes) {
 }
 
 vd Periodic::genSignalUnscaled(const us nframes) {
-  us signal_idx = 0;
+
   vd res(nframes);
-  while (signal_idx < nframes) {
+  if(_signal.size() == 0) {
-    res[signal_idx] = _signal[_cur_pos];
+    throw rte("No signal defined while calling");
+  }
+  for(us i=0;i<nframes;i++) {
+    res(i) = _signal[_cur_pos];
     _cur_pos++;
     _cur_pos %= _signal.size();
   }
@@ -48,29 +55,35 @@ vd Periodic::genSignalUnscaled(const us nframes) {
 }
 
 Sweep::Sweep(const d fl, const d fu, const d Ts, const d Tq, const us flags)
-    : fl_(fl), fu_(fu), Ts(Ts), Tq(Tq), flags(flags) {
+  : fl_(fl), fu_(fu), Ts(Ts), Tq(Tq), flags(flags) {
-  if (fl <= 0 || fu < fl || Ts <= 0) {
+    if (fl <= 0 || fu < fl || Ts <= 0) {
-    throw std::runtime_error("Invalid sweep parameters");
+      throw std::runtime_error("Invalid sweep parameters");
+    }
+    if ((flags & ForwardSweep) && (flags & BackwardSweep)) {
+      throw std::runtime_error(
+          "Both forward and backward sweep flag set. Please only set either one "
+          "or none for a continuous sweep");
+    }
+    if ((flags & LinearSweep) && (flags & LogSweep)) {
+      throw std::runtime_error(
+          "Both logsweep and linear sweep flag set. Please only set either one.");
+    }
   }
-  if ((flags & ForwardSweep) && (flags & BackwardSweep)) {
-    throw std::runtime_error(
-        "Both forward and backward sweep flag set. Please only set either one "
-        "or none for a continuous sweep");
-  }
-}
 
 void Sweep::resetImpl() {
 
+  DEBUGTRACE_ENTER;
+
   _cur_pos = 0;
 
   bool forward_sweep = flags & ForwardSweep;
   bool backward_sweep = flags & BackwardSweep;
 
-  const d Dt = 1 / fs; // Deltat
+  const d Dt = 1 / _fs; // Deltat
 
   // Estimate N, the number of samples in the sweep part (non-quiescent part):
-  const us Ns = (us)(Ts * fs);
+  const us Ns = (us)(Ts * _fs);
-  const us Nq = (us)(Tq * fs);
+  const us Nq = (us)(Tq * _fs);
   const us N = Ns + Nq;
 
   _signal = vd(N, arma::fill::zeros);
@@ -120,7 +133,7 @@ void Sweep::resetImpl() {
       d phih = 2 * number_pi * Dt * (fl * Nf + 0.5 * (Nf - 1) * (fu - fl));
 
       us K =
-          (us)(phih / (2 * number_pi) + Dt * (fu * Nb - (Nb - 1) * (fu - fl)));
+        (us)(phih / (2 * number_pi) + Dt * (fu * Nb - (Nb - 1) * (fu - fl)));
 
       d eps_num1 = (K - phih / (2 * number_pi)) / Dt;
       d eps_num2 = -fu * Nb + (Nb - 1) * (fu - fl);
@@ -151,7 +164,7 @@ void Sweep::resetImpl() {
     }
   } else if (flags & LogSweep) {
 
-    DEBUGTRACE_PRINT("Exponential sweep");
+    DEBUGTRACE_PRINT("Log sweep");
     if (forward_sweep || backward_sweep) {
       /* Forward or backward sweep */
       DEBUGTRACE_PRINT("Forward or backward sweep");
@@ -185,9 +198,9 @@ void Sweep::resetImpl() {
       const us Nb = N - Nf;
       const d k1 = (fu / fl);
       const d phif1 =
-          2 * number_pi * Dt * fl * (k1 - 1) / (d_pow(k1, 1.0 / Nf) - 1);
+        2 * number_pi * Dt * fl * (k1 - 1) / (d_pow(k1, 1.0 / Nf) - 1);
       const us K = (us)(phif1 / (2 * number_pi) +
-                        Dt * fu * (1 / k1 - 1) / (d_pow(1 / k1, 1.0 / Nb) - 1));
+          Dt * fu * (1 / k1 - 1) / (d_pow(1 / k1, 1.0 / Nb) - 1));
 
       d E;
       d k = k1;
@@ -196,7 +209,7 @@ void Sweep::resetImpl() {
        * continuous */
       for (us iter = 0; iter < NITER_NEWTON; iter++) {
         E = (k - 1) / (d_pow(k, 1.0 / Nf) - 1) +
-            (k - 1) / (1 - d_pow(k, -1.0 / Nb)) - K / Dt / fl;
+          (k - 1) / (1 - d_pow(k, -1.0 / Nb)) - K / Dt / fl;
         DEBUGTRACE_PRINT(E);
 
         /* All parts of the derivative of above error E to k */
@@ -204,9 +217,9 @@ void Sweep::resetImpl() {
         d dEdk2 = (1 / k - 1) / (d_pow(k, -1.0 / Nb) - 1);
         d dEdk3 = -1 / (k * (d_pow(k, -1.0 / Nb) - 1));
         d dEdk4 = d_pow(k, -1.0 / Nb) * (1 / k - 1) /
-                  (Nb * d_pow(d_pow(k, -1.0 / Nb) - 1, 2));
+          (Nb * d_pow(d_pow(k, -1.0 / Nb) - 1, 2));
         d dEdk5 = -d_pow(k, 1.0 / Nf) * (k - 1) /
-                  (Nf * k * d_pow(d_pow(k, 1.0 / Nf) - 1, 2));
+          (Nf * k * d_pow(d_pow(k, 1.0 / Nf) - 1, 2));
         d dEdk = dEdk1 + dEdk2 + dEdk3 + dEdk4 + dEdk5;
 
         /* Iterate! */

src/lasp/dsp/lasp_siggen_impl.h

@@ -1,7 +1,19 @@
 #pragma once
 #include "lasp_siggen.h"
 #include "lasp_types.h"
+/**
+ * \addtogroup dsp
+ * @{
+ */
 
+/**
+ * \addtogroup siggen 
+ * @{
+ */
+
+/**
+ * @brief Generate a random signal (noise)
+ */
 class Noise : public Siggen {
   d level_linear;
   virtual vd genSignalUnscaled(const us nframes) override;
@@ -19,9 +31,16 @@ class Noise : public Siggen {
 
 };
 
+/**
+ * @brief Generate a sine wave
+ */
 class Sine : public Siggen {
   d phase = 0;
   d omg;
+  protected:
+
+  void resetImpl() override final { phase=0; }
+  virtual vd genSignalUnscaled(const us nframes) override final;
 
   public:
 
@@ -32,10 +51,14 @@ class Sine : public Siggen {
    */
   Sine(const d freq_Hz);
   ~Sine() = default;
-  virtual vd genSignalUnscaled(const us nframes) override final;
+  void setFreq(const d newFreq) { omg = 2*arma::datum::pi*newFreq; } ;
-  void setFreq(const d newFreq);
-  void resetImpl() override final { phase=0; }
 };
+
+/**
+ * @brief Base class for all periodic signals (that are exactly periodic based
+ * on the sampling frequency). Note that the sine wave generator is not exactly
+ * periodic as the frequency can be any floating point value.
+ */
 class Periodic: public Siggen {
   protected:
     vd _signal { 1, arma::fill::zeros};
@@ -47,20 +70,23 @@ class Periodic: public Siggen {
 
 };
 
+/**
+ * @brief Sweep signal
+ */
 class Sweep : public Periodic {
   d fl_, fu_, Ts, Tq;
   us index;
   us flags;
 
+  void resetImpl() override;
+
+  public:
+
   static constexpr int ForwardSweep = 1 << 0;
   static constexpr int BackwardSweep = 1 << 1;
   static constexpr int LinearSweep = 1 << 2;
   static constexpr int LogSweep = 1 << 3;
 
-  void resetImpl() override;
-
-  public:
-
   /**
    * Create a sweep signal
    *
@@ -77,3 +103,5 @@ class Sweep : public Periodic {
   ~Sweep() = default;
 
 };
+/** @} */
+/** @} */

src/lasp/lasp_cpp.cpp

@@ -31,6 +31,7 @@ void init_daqconfiguration(py::module &m);
 void init_daq(py::module &m);
 void init_streammgr(py::module &m);
 void init_datahandler(py::module &m);
+void init_siggen(py::module &m);
 
 PYBIND11_MODULE(lasp_cpp, m) {
 
@@ -40,6 +41,7 @@ PYBIND11_MODULE(lasp_cpp, m) {
   init_daq(m);
   init_streammgr(m);
   init_datahandler(m);
+  init_siggen(m);
 
   // We store the version number of the code via CMake, and create an
   // attribute in the C++ code.

src/lasp/pybind11/lasp_dsp_pybind.cpp

@@ -2,8 +2,6 @@
 #include "lasp_avpowerspectra.h"
 #include "lasp_biquadbank.h"
 #include "lasp_fft.h"
-#include "lasp_siggen.h"
-#include "lasp_siggen_impl.h"
 #include "lasp_slm.h"
 #include "lasp_window.h"
 #include <iostream>
@@ -47,13 +45,6 @@ void init_dsp(py::module &m) {
 
   w.def_static("toTxt", &Window::toText);
 
-  /// Siggen 
-  py::class_<Siggen, std::shared_ptr<Siggen>> siggen(m, "Siggen");
-  siggen.def("setLevel", &Siggen::setLevel,
-             "Set the level of the signal generator");
-
-  py::class_<Sine, std::shared_ptr<Sine>> sw(m, "Sine", siggen);
-  sw.def(py::init<const d>());
 
   /// SeriesBiquad 
   py::class_<SeriesBiquad> sbq(m, "SeriesBiquad");

src/lasp/pybind11/lasp_siggen.cpp

@@ -0,0 +1,55 @@
+#include <carma>
+#include "lasp_avpowerspectra.h"
+#include "lasp_biquadbank.h"
+#include "lasp_fft.h"
+#include "lasp_siggen.h"
+#include "lasp_siggen_impl.h"
+#include "lasp_slm.h"
+#include "lasp_window.h"
+#include <iostream>
+#include <pybind11/pybind11.h>
+
+using std::cerr;
+namespace py = pybind11;
+
+/**
+ * \ingroup pybind
+ * @{
+ *
+ */
+
+/**
+ * @brief Initialize Siggen wrappers
+ *
+ * @param m The Python module to add classes and methods to
+ */
+void init_siggen(py::module &m) {
+
+  /// Siggen 
+  py::class_<Siggen, std::shared_ptr<Siggen>> siggen(m, "Siggen");
+  siggen.def("setLevel", &Siggen::setLevel,
+             "Set the level of the signal generator");
+  siggen.def("setDCOffset", &Siggen::setDCOffset);
+  siggen.def("setMute", &Siggen::setMute);
+  siggen.def("setLevel", &Siggen::setLevel);
+  siggen.def("setLevel", &Siggen::setLevel, py::arg("newLevel"), py::arg("dB") = true);
+  siggen.def("genSignal", &Siggen::genSignal);
+
+  py::class_<Noise,std::shared_ptr<Noise>> noise(m, "Noise", siggen);
+  noise.def(py::init<>());
+
+  py::class_<Sine, std::shared_ptr<Sine>> sine(m, "Sine", siggen);
+  sine.def(py::init<const d>());
+  sine.def("setFreq", &Sine::setFreq);
+
+  py::class_<Periodic, std::shared_ptr<Periodic>> periodic(m, "Periodic", siggen);
+
+  py::class_<Sweep, std::shared_ptr<Sweep>> sweep(m, "Sweep", periodic);
+  sweep.def(py::init<const d, const d, const d, const d, const us>());
+  sweep.def_readonly_static("ForwardSweep", &Sweep::ForwardSweep);
+  sweep.def_readonly_static("BackwardSweep", &Sweep::BackwardSweep);
+  sweep.def_readonly_static("LinearSweep", &Sweep::LinearSweep);
+  sweep.def_readonly_static("LogSweep", &Sweep::LogSweep);
+
+}
+/** @} */