Use sound judgment with dynamic range.(THE DATA DETECTIVE)

From: EDN | Date: October 13, 2005 | Copyright information

Almost everyone has heard the difference in the quality of sound produced by movie-theater system and that produced by home-theatre audio equipment. The difference can arise from audio-signal distortion that human ears can detect at low levels. Thus, rigorous testing must occur during product design and during manufacturing to ensure companies ship good MP-3 players, cell phones, sound cards, and so on. Testing involves measuring many characteristics, such as signal-to-noise ratio, total harmonic distortion, dynamic range, and intermodulation distortion.

Although distortion ...

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