| 摘要 |
The present invention provides a speech enhancing method for communication earphone including two parts: sending end noise reduction processing and receiving end noise reduction processing, wherein the sending end noise reduction processing part includes: determining a wearing condition of the earphone by comparing energy difference of sound signals picked up by microphones of the communication earphone; if the earphone is normally worn, subjecting the sound signal first to multi-microphone noise reduction and then to single channel noise reduction to further suppress residuary stationary noise; otherwise suppressing stationary noise in the sound signal by single channel noise reduction directly. With the present invention, it is possible to effectively multiplex signals picked up by a plurality of microphones, and acoustics signal processing and active noise control methods are respectively applied at both sending and receiving end of the communication earphones at the same time for speech enhancement, thereby ensuring high SNR of speech at both local and remote sides under noisy environment, providing highly clear and understandable speech signal for both sides. |
