1 results about "Voice activity" patented technology

The invention provides a non-acoustic voice information detection method, a service device and a readable storage medium. The detection method at least comprises the following steps of: acquiring a PPG signal, intercepting a motion artifact signal segment related to voice activity in the PPG signal, and detecting voice information from the signal segment. By adopting the non-acoustic voice information detection method, the service device and the readable storage medium based on the PPG signal, a user can interact with a machine or transmit voice information only by making a talking action without making a sound, so that the user experience comfort degree, the voice interaction privacy and the information detection accuracy under a strong noise environment can be greatly improved. Meanwhile, the method can be used for voice transmission and voice control scenes which lack transmission media, have high noise or have secret content, such as aerospace, military affairs, public security, fire fighting, disaster relief and the like, and noisy public places such as stations, shopping malls, bars and the like, and the method has extremely high application value.