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Lecture 3: Sampling, Aliasing, Antialiasing (29)

This effect is actually often useful in lo-fi music production! Decreasing a sound clip's sampling rate gives an "underwater" feel to sound as high frequencies are cut out.


What gavinmak said is also applicable to real life: when you hear music from another room through a wall or door, it sounds much more bass-y because the higher frequencies don't travel through solid materials like wood as well.


Adding to gavinmak and mkassaian, "low-pass filters" are everywhere in our daily life, since acoustic attenuation is generally proportional to the square of sound frequency.

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