Method Process

Source/Vocoder.cpp:74–209

}

void Vocoder::Process(double time)
{
   PROFILER(Vocoder);

   IAudioReceiver* target = GetTarget();

   if (target == nullptr)
      return;

   SyncBuffers();

   if (!mEnabled)
   {
      for (int ch = 0; ch < GetBuffer()->NumActiveChannels(); ++ch)
      {
         Add(target->GetBuffer()->GetChannel(ch), GetBuffer()->GetChannel(ch), GetBuffer()->BufferSize());
         GetVizBuffer()->WriteChunk(GetBuffer()->GetChannel(ch), GetBuffer()->BufferSize(), ch);
      }

      GetBuffer()->Reset();
      return;
   }

   ComputeSliders(0);

   float inputPreampSq = mInputPreamp * mInputPreamp;
   float carrierPreampSq = mCarrierPreamp * mCarrierPreamp;
   float volSq = mVolume * mVolume;

   int bufferSize = GetBuffer()->BufferSize();

   int zerox = 0; //count up zero crossings
   bool positive = true;
   for (int i = 0; i < bufferSize; ++i)
   {
      if ((GetBuffer()->GetChannel(0)[i] < 0 && positive) ||
          (GetBuffer()->GetChannel(0)[i] > 0 && !positive))
      {
         ++zerox;
         positive = !positive;
      }
   }
   bool fricative = zerox > (bufferSize * mFricativeThresh); //if a % of the samples are zero crossings, this is a fricative
   if (fricative)
      mFricDetected = true; //draw that we detected a fricative

   mGate.ProcessAudio(time, GetBuffer());

   mRollingInputBuffer.WriteChunk(GetBuffer()->GetChannel(0), bufferSize, 0);

   //copy rolling input buffer into working buffer and window it
   mRollingInputBuffer.ReadChunk(mFFTData.mTimeDomain, VOCODER_WINDOW_SIZE, 0, 0);
   Mult(mFFTData.mTimeDomain, mWindower, VOCODER_WINDOW_SIZE);
   Mult(mFFTData.mTimeDomain, inputPreampSq, VOCODER_WINDOW_SIZE);

   mFFT.Forward(mFFTData.mTimeDomain,
                mFFTData.mRealValues,
                mFFTData.mImaginaryValues);