Paper speakers

A typical loudspeaker found in headphones or an audio system uses electric current inputs that pass through a coil of wire that generates a magnetic field, which moves a speaker membrane, that moves the air above it, that makes the sound we hear. By contrast, the new loudspeaker simplifies the speaker design by using a thin film of a shaped piezoelectric material that moves when voltage is applied over it, which moves the air above it and generates sound.

imagine lining the interior of your car or bedroom walls with this :metal:

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Chris pontius wee man GIF on GIFER - by Kadar

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i wonder what’s the transient and frequency response of this