Method and device for acquiring sound signal based on sensor

Abstract

The embodiment of the invention discloses a method and device for acquiring a sound signal based on a sensor. The sensor comprises the following steps of: sensing the vibration condition of a first object with a sensor to acquire the sensed motion data of the first object in a vibration process, wherein the sensor comprises an acceleration sensor and / or a gyroscope; carrying out operation processing on the sensed motion data to obtain a sound signal of the first object in the vibration process. With the invention, ambient noise signals can be completely shielded, the sound signal generated in the vibration process of the vocal chord and the heart of a person or the vibration process of an automobile engine and other vibration objects can be acquired even if a user is in an extremely noisy environment, the functions of a microphone and a stethophone can be better realized, and the use experience of the user is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method and device for acquiring sound signals based on sensors. Background technique [0002] Microphone (MIC), also known as microphone, microphone, microphone, etc., is an energy conversion device that converts sound signals into electrical signals. Microphones are tools that convert sound signals into electrical signals. [0003] There are many types of microphones at present. According to the principle of energy conversion, they are: electric type (moving coil type, aluminum belt type), capacitive type (DC polarization type), piezoelectric type (crystal type, ceramic type), and electromagnetic type, Carbon particle type, semiconductor type and recently emerging silicon micro microphones, in addition to liquid microphones and laser microphones. Most of the working principles are that the human voice vibrates the diaphragm in the microphone through the air, forming a we...

AI Technical Summary

Problems solved by technology

[0006] However, for the microphone, since both the ambient noise and the sound of people's speech will pass through the air to vibrate the diaphragm in the microphone, the microphone also receives the environmental noise signal while receiving the sound signal of people's speech, so that people The voice of speaking is mixed with various environmental noise outputs, making it difficult for people to hear the voice of speaking, especially in places with extremely loud noises such as construction sites and battlefields, it is impossible to communicate at all, which seriously affects the use of users; similarly, stethoscopes are also easily affected by air. The environmental noise interference in the environment makes the sound signal heard by the doctor or the user who diagnoses the car engine not clear enough. At the same time, it is not easy to watch and save, and it is not convenient for comparative observation and follow-up research.

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