Patent ID: 8144891
Filing Date: 2012-03-27
Classification: H04R

Abstract:
1. An earphone set, comprising: a main device having a digital signal processor; a first earplug having a first external microphone, an internal microphone and a first speaker respectively and electrically connected to the digital signal processor; a second earplug having a second external microphone and a second speaker electrically connected to the digital signal processor; and wherein, when the earphone set operates in a hearing-aid mode, the first external microphone converts an external sound wave into a first electronic signal and then transmits the first electronic signal to the digital signal processor for processing, and the first speaker converts the first electronic signal processed by the digital signal processor into a sound wave for output into an ear canal of a user; wherein when the earphone set communicates with a mobile phone and operates in a speak mode, the internal microphone receives a sound wave from the ear canal and converts the received sound wave into a second electronic signal for transmission to the mobile phone, the second speaker receives a third electronic signal transmitted from the mobile phone and processed by the digital signal processor and then converts the third electronic signal into a sound wave for output into another ear canal of the user, and a second external microphone receives the external sound wave for use as a reference value for enabling the digital signal processor to produce an anti-noise sound source for output through the second speaker to cancel noises.