Yes, blind individuals can often perceive vibrations caused by sound waves through their feet or other parts of their bodies. This phenomenon is known as vibrotactile perception or vibrotactile sensitivity.
When someone is singing or talking near a blind person, the sound waves produced by the person's voice create vibrations in the surrounding environment. These vibrations can be transmitted through solid objects, such as the ground, walls, or furniture. If the blind person is in physical contact with these objects, they may be able to feel the vibrations through their feet, hands, or other body parts.
The ability to perceive these vibrations can provide additional sensory information about the sound environment to blind individuals. They can use these vibrations as cues to recognize and locate the source of the sound, distinguish different sounds, or understand the rhythm and cadence of speech.
Moreover, some blind individuals develop enhanced vibrotactile sensitivity, as they rely more heavily on their remaining senses, such as touch and hearing, to gather information about the world around them. With practice and experience, they can become more attuned to subtle vibrations and use them as a valuable sensory input.
It is important to note that not all blind individuals may have the same level of vibrotactile sensitivity, and individual experiences can vary. Factors such as the person's sensory perception, level of sensitivity, and the intensity of the sound or vibrations can influence their ability to detect and interpret vibrations caused by sound waves.