Patent ID: 9398366
Filing Date: 2016-07-19
CPC Classification: H04R

Claim Text:
1. An earphone or a headset comprising: a housing; a sealing unit adapted to seal off an ear canal; an internal microphone configured to detect an audio signal produced by bone conduction sound in the ear canal; an external microphone configured to detect an audio signal which has an interference sound field and a speech signal transmitted by way of air conduction sound; and a signal processing unit connected to the internal microphone and the external microphone configured to signal-process an audio signal detected by the external microphone, and to add the signal-processed signal of the external microphone to an audio signal from the internal microphone; wherein the signal processing unit is adapted to perform band pass filtering or high pass filtering of the audio signal of the external microphone and to output the added signal as an output signal; wherein the signal processing unit has a band pass for band pass filtering of the external microphone; and wherein the transmission range of the band pass is above the spectrum of the audio signal detected at the internal microphone.