Method TestEnergy

src/VoiceKey.cpp:854–883

This might continue over a number of blocks.

//This might continue over a number of blocks.
double VoiceKey::TestEnergy (
   const WaveChannel & t, sampleCount start, sampleCount len)
{

   double sum = 1;
   auto s = start;                                //Keep track of start
   auto originalLen = len;                        //Keep track of the length of block to process (its not the length of t)
   const auto blockSize = limitSampleBufferSize(
      t.GetMaxBlockSize(), len);               //Determine size of sampling buffer
   Floats buffer{ blockSize };       //Get a sampling buffer

   while(len > 0)
      {
         //Figure out how much to grab
         auto block = limitSampleBufferSize ( t.GetBestBlockSize(s), len );

         t.GetFloats(buffer.get(), s,block);                      //grab the block;

         //Now, go through the block and calculate energy
         for(decltype(block) i = 0; i< block; i++)
            {
               sum += buffer[i]*buffer[i];
            }

         len -= block;
         s += block;
      }

   return sum / originalLen.as_double();
}


//This will update RMSE by adding one element and subtracting another