Sound flash warning circuit schematic

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The sound is generated by the vibration of the object, and the object that is making the sound is called the sound source. The sound travels in the form of sound waves. Sound is just the movement of sound waves through solid or liquid, gas. The sound waves vibrate the inner ear's ossicles. These vibrations are transformed into tiny electronic brain waves, which are the sounds we perceive. The inner ear uses the same principle as the microphone captures the sound wave or the speaker's pronunciation. It is the relationship between the moving mechanical part and the barometric pressure wave. Naturally, when the pitch of the sound is low, the movement is slow and large enough, we can actually "feel" the barometric wave to vibrate the body. So we perceive the sound with a mixed body part.