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21.1 Signal Delay
What Is Time?
Why Signal Delay?
Useful Values to Keep in Mind
21.2 Useful Signal Delay Equations
Temperature Effect on the Speed of Sound
Conventional Distance, Velocity, and Time Equations
A More Accurate Velocity Equation
Finding the Velocity of Sound with an Analyzer
The Henry, Fay-Hall, Haas Effect
A Typical Case
Setting Signal Delay
Signal Synchronization, Alignment and Convergence Defined
21.3 Synchronization and Alignment of Arrays
The High-Frequency Units
21.4 Finding Acoustic Origins of Unlike Devices
A Church Loudspeaker Missynchronization
Removal of the Reflected Energy
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