用户手册目录Chapter 1: Wave Propagation1Wavelength, Frequency, and Speed of Sound1Combining Sine Waves1Combining Delayed Sine Waves1Diffraction of Sound1Effects of Temperature Gradients on Sound Propagation1Effects of Wind Velocity and Gradients on Sound Propagation1Effect of Humidity on Sound Propagation1Chapter 2: The Decibel2Introduction2Power Relationships2Voltage, Current, and Pressure Relationships2Sound Pressure and Loudness Contours2Inverse Square Relationships2Adding Power Levels in dB2Reference Levels2Peak, Average, and RMS Signal Values2Chapter 3: Directivity and Angular Coverage of Loudspeakers3Introduction3Some Fundamentals3A Comparison of Polar Plots, Beamwidth Plots, Directivity Plots, and Isobars3Directivity of Circular Radiators3The Importance of Flat Power Response3Measurement of Directional Characteristics3Using Directivity Information3Directional Characteristics of Combined Radiators3Chapter 4: An Outdoor Sound Reinforcement System4Introduction4The Concept of Acoustical Gain4The Influence of Directional Microphones and Loudspeakers on System Maximum Gain4How Much Gain is Needed?4Conclusion4Chapter 5: Fundamentals of Room Acoustics5Introduction5Absorption and Reflection of Sound5The Growth and Decay of a Sound Field in a Room5Reverberation and Reverberation Time5Direct and Reverberant Sound Fields5Critical Distance5The Room Constant5Statistical Models and the Real World5Chapter 6: Behavior of Sound Systems Indoors6Introduction6Acoustical Feedback and Potential System Gain6Sound Field Calculations for a Small Room6Calculations for a Medium-Size Room6Calculations for a Distributed Loudspeaker System6System Gain vs. Frequency Response6The Indoor Gain Equation6Measuring Sound System Gain6General Requirements for Speech Intelligibility6The Role of Time Delay in Sound Reinforcement6System Equalization and Power Response of Loudspeakers6System Design Overview6Chapter 7: System Architecture and Layout7Introduction7Typical Signal Flow Diagram7Amplifier and Loudspeaker Power Ratings7Wire Gauges and Line Losses7Constant Voltage Distribution Systems (70-volt lines)7Low Frequency Augmentation—Subwoofers7Case Study A: A Speech and Music System for a Large Evangelical Church7Case Study B: A Distributed Sound Reinforcement System for a Large Liturgical Church7Small Meeting Space, and Social/Bar Area7文件大小: 1.5 MB页数: 104Language: English打开用户手册