Non-acoustic voice information detection method, service device and readable storage medium

[0045] Photoplethysmography (PPG for short) carries signals of human physiological characteristics, such as heart rate, respiration rate, blood oxygen saturation, etc., and it is easily disturbed by movement. Therefore, when the PPG probe detects the , will introduce interference due to human voice activity. The inventor has found that this interference has a lot to do with language content during long-term experiments. Furthermore, the inventor has developed a brand-new non-acoustic speech information detection method through long-term experiments, and extracts speech information by performing model learning and training on the motion artifact noise features related to speech activities in the PPG signal.

[0046] Specifically, such as figure 1 Shown, the non-acoustic speech information detection method based on PPG signal of the present invention comprises steps:

[0047] S01: Obtain a PPG signal;

[0048] S02: Intercepting a signal segment containing motion artifacts relate

[0071] like Figure 5 As shown, the present invention also provides a service device 5, the service device 5 includes a PPG signal collector 501, a memory 502 and a processor 503, the PPG signal collector 501, the memory 502 and the processor 503 The memory 502 stores computer instructions, and the processor 503 implements the non-acoustic voice information detection method based on the PPG signal in Embodiment 1 by executing the computer instructions. The memory 502 can be any device with a storage function, including but not limited to high-speed random access memory, non-volatile memory, etc., such as common magnetic disks, USB flash drives, etc.; the processor 503 can be such as central processing General-purpose processors such as Central Processing Unit (CPU for short) and Network Processor (NP for short); they can also be digital signal processors, application specific integrated circuits (ASIC for short), field programmable Field-Programmable Gate Array (FPGA for short)