Method ProcessAudio

Source/GateEffect.cpp:44–86

}

void GateEffect::ProcessAudio(double time, ChannelBuffer* buffer)
{
   PROFILER(GateEffect);

   if (!mEnabled)
      return;

   float bufferSize = buffer->BufferSize();

   ComputeSliders(0);

   for (int i = 0; i < bufferSize; ++i)
   {
      const float decayTime = .01f;
      float scalar = powf(0.5f, 1.0f / (decayTime * gSampleRate));
      float input = 0;
      for (int ch = 0; ch < buffer->NumActiveChannels(); ++ch)
         input = MAX(input, fabsf(buffer->GetChannel(ch)[i]));

      if (input >= mPeak)
      {
         /* When we hit a peak, ride the peak to the top. */
         mPeak = input;
      }
      else
      {
         /* Exponential decay of output when signal is low. */
         mPeak = mPeak * scalar;
         if (mPeak < FLT_EPSILON)
            mPeak = 0.0;
      }

      if (mPeak >= mThreshold && mEnvelope < 1)
         mEnvelope = MIN(1, mEnvelope + gInvSampleRateMs / mAttackTime);
      if (mPeak < mThreshold && mEnvelope > 0)
         mEnvelope = MAX(0, mEnvelope - gInvSampleRateMs / mReleaseTime);

      for (int ch = 0; ch < buffer->NumActiveChannels(); ++ch)
         buffer->GetChannel(ch)[i] *= mEnvelope;

      time += gInvSampleRateMs;
   }
}

void GateEffect::DrawModule()
{