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Signs for WOOFER
Meaning: a loudspeaker designed to reproduce low frequencies or sounds.
One day my art college mate, who taught me a weekly lesson in playing bass guitar, once asked me whether I could feel the difference between the cube and the sine sounds. To find out, I sat on his large woofer connected to the computer while he generated each of those two pieces of vibration from the computer. First, he told me which of the sounds "cube" and "sine" he was going to generate for me to feel them.
To my amazement, through my body I could clearly identify the shape of a wave for sine and the shape of a square for cube, as well as I could see them in visual imagery through touch. Then, my friend tested me by playing one of the sounds and asked me which cube or sine was it. I correctly replied them.
This experience brought me to exploring synaesthesia which means that senses are interchangeable.