Low-Power-Consumption Active Noise-Reduction In-Ear Music Earphone and Method for Noise Reduction

Abstract

An earphone and a method for noise reduction in the earphone are disclosed in the present invention. The earphone includes: an audio circuit configured for outputting an audio signal; a noise cancellation circuit configured for detecting an ambient noise signal, determining phase of the ambient noise signal and reversing such phase to generate an anti-noise signal having same level and opposite phase as that of the ambient noise signal; a combiner unit configured for combining the audio signal with the anti-noise signal to generate a combined signal; a speaker electrically connected to the combiner unit and configured for receiving and outputting the combined signal; wherein, the combiner unit includes a first diode and a second diode electrically connected to the speaker in parallel; the audio circuit is electrically connected to the first diode; and, the noise cancellation circuit is electrically connected to the second diode.

Dependencies are inferred from the claim text.