...This is the sound chart generated by a downward tap of the knuckel on violn top plate wood. Frequency is the horizontal axis of the chart and sound loudness the vertical. The fundamental tap tone that we are seeking to identify is shown by the white bar at 494 HZ. In this case there three equally strong sounds competing to capture the attention of our ears, but only this lowest fundament tap tone is of use to us in tuning violin family instruments.
					...This sound chart was generated by a downward tap of our new lead tapping pencil. It also shows the fundamental tap tone at 494 HZ, but this time the fundament tap tone is the loudest sound our ears hear. Some of the higher overtones are still present but they are largely muted so as not to so easily confuse our ears. ...Both these sound charts were generated by the useful "Overtone Analyzer" software program.