PART VII Acoustics and Sound Reinforcement Sound system microphone Measuring microphone Loud speaker Mixer Equalizer Power amp Analyzer receive Analyzer send FIGURE 18.32 Regenerative response tuning. By using sweeps from an oscillator, it is then possible to watch what happens to the sound system's electrical and acoustic responses as well as to listen to the transient response. (Measure the transient response effects if a TEF analyzer is available.)