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Old April 16th, 2007, 2:15 PM
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cschang cschang is offline
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60Hz-22kHz +/-3dB looks about right to me. If you use about 87dB as your mid-point, -3dB would be 84dB, and +3db would be 90dB.

The interpretation of "+-3dB" is what is in question....some companies use it as a 6dB window, others use it as a 3dB window.
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