Method for Voice Recognition via Earphone and Earphone

A method for voice recognition via an earphone is disclosed. The method includes receiving first audio data via the first microphone and buffering the first audio data in response to the first trigger signal; receiving second audio data via the first microphone and recognizing whether the first audio data contains data of a wake-on-voice word in response to the second trigger signal; and recognizing whether the second audio data contains data of the wake-on-voice word. The first audio data is received and buffered in a first duration starting from when the first trigger signal is received and ending when the second trigger signal is received. The second audio data is received in a second duration starting from when the second trigger signal is received and ending when whether the first audio data contains data of the wake-on-voice word is recognized.