Voiceprint recognition, a type of biometric technology, also known as speaker recognition, is a technique for discriminating the identity of a speaker by sound. There are two types of voiceprint recognition technology, namely speaker recognition and speaker confirmation. Different voiceprint recognition techniques are used for different tasks and applications. For example, when narrowing the scope of criminal investigation, it may be necessary to identify the technology, and the bank transaction needs to confirm the technology. The People's Bank of China officially released the financial industry standard for "Mobile Finance Based Security Specification for Voiceprint Recognition", which means that voiceprint recognition technology has been recognized by financial regulatory authorities. This also solves the standard problem for voiceprint recognition technology to enter the mobile finance field.
The generation of human language is a complex physiological and physical process between the human language center and the vocal organs. The vocal organs used by people in speech--tongue, teeth, throat, lungs, and nasal cavity vary greatly in size and shape. , so the soundprints of any two people are different. Each person's speech acoustic characteristics are both relatively stable and variability, not absolute and immutable. This variation can come from physiology, pathology, psychology, simulation, camouflage, and also related to environmental disturbances. However, since each person's vocal organs are different, in general, people can still distinguish the voices of different people or judge whether they are the same person's voice.