code: func (wav Reader) GetFile() File {
  	return File{
  		SampleRate:      wav.chunkFmt.SampleRate,
  		Channels:        wav.chunkFmt.NumChannels,
  		SignificantBits: wav.chunkFmt.BitsPerSample,
  		BytesPerSecond:  wav.chunkFmt.BytesPerSec,
  		AudioFormat:     wav.chunkFmt.AudioFormat,
  		NumberOfSamples: wav.numSamples,
  		SoundSize:       wav.dataBlocSize,
  		Duration:        wav.duration,
  		Canonical:       wav.canonical && !wav.extraChunk,
  	}
  }
docs: // GetFile returns File