Self-adaptive voice activation detection device and method for high-noise environment on airplane

The invention belongs to the technical field of voice signal processing and noise control, and particularly relates to a self-adaptive voice activation detection device and method for a high-noise environment on an airplane, and the device comprises a voice signal preprocessing unit, a feature extraction unit, a VAD judgment unit, a VAD level output unit, and a threshold calculation unit, and thevoice is input into the voice signal preprocessing unit. According to the method, self-adaptive voice activation detection in a high-noise environment on an airplane is realized by adopting a VAD algorithm and adopting a voice detection method of a zero rate of a short-time signal in combination with the device. According to the invention, the signal feature extraction unit adopts voice feature extraction of a short-time energy detection method to identify the presence or absence of a voice signal, and obtains relatively accurate voice endpoint judgment in combination with voice features of ashort-time zero-crossing d