In this measurement he used TEF, a professional acoustical measurements and instrumentation system made by Gold Line, a system that incorporates Richard C. Heyser's time delay spectrometry (TDS) method to analyze sound waves.
He used TEF. This was in this measurement. A professional acoustical measurements and instrumentation system made by Gold Line were TEF. A system were Gold Line. This system incorporates Richard C. Heyser's time delay spectrometry (TDS) method to analyze sound waves.