| 摘要 |
An universal active noise reduction apparatus having a headset and a separate electronic sound module, comprising the headset having a housing, whereby the housing having a headband with a first end and a second end; a plurality of earcups having a microphone means for detecting noise signal and a speaker means for receiving audio signals attached to both ends of the headband; electronic connecting means having a first end and a second end, whereby the first end of the electronic connecting means extends from at least one earcup of the headband; an adapter connected to the second end of the electronic connecting means, whereby a plurality of male jacks for transmitting the audio signal protrude from the adapter; the electrical sound module containing a noise reduction circuitry means and an amplifier means, whereby the electrical sound module has at least a plurality of female members that interface with the male jacks of the adapter when inserted into the module for transmitting sound means; and optionally a switch means located on the electrical sound module that activates the active noise reduction circuitry means to cancel background noise prior to being transmitted to a ear of the wearer.
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