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Section 1 Test and Measurement Pat Brown 1.1 Test and Measurement 1.1.1 Why Test? 1.2 electrical Testing 1.3 Acoustical Testing 1.3.1 Sound Level Measurements 1.3.2 Detailed Sound Measurements 1.3.3 Measurement Systems 1.3.4 Testing Methods 1.3.5 Preparation 1.3.6 Human Perception 1.3.7 Polarity 1.4 conclusion References Bibliography 1.1 TeST And MeASUReMenT