Abstract
A sound signal generator testing apparatus is provided. The apparatus includes a hermetic seal ( 2 ), a sound signal input unit ( 4 ), and at least a noise suppression unit ( 5 ). The sound signal input unit is for receiving sound signals transmitted from a sound signal generator ( 1 ) under testing. Each noise suppression unit includes a sound signal input unit, a low pass filter, an inverter, and an output. The sound signal input unit is for receiving sound signals. The low pass filter is for filtering the sound signals by passing the low frequencies of the sound signals that are below a predetermined value. The inverter is for inverting phases of the sound signals transmitted from the low pass filter and producing inverted sound signals. The output unit is placed behind the sound signal input unit for outputting the inverted sound signals.
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