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High-quality OLED displays now enabling integrated thin and multichannel audio

sciencedaily.com

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Re: High-quality OLED displays now enabling integrated thin and multichannel audio

#6
This is impressive. Though perhaps not very useful. Humans (and animals in general) are quite bad at precisely locating sound anyway. We only have two input channels, the right and the left ear, and any location information comes from a signal difference (loudness usually) between the two.

Re: High-quality OLED displays now enabling integrated thin and multichannel audio

#7

Could such a display also function as a microphone?

Good point, piezos do also generate voltages when deformed, so this could conceivably be run in reverse... Microphone arrays are already used for directional sound detection, so this could have fun implications for that application given the claimed density of microphones.

Re: High-quality OLED displays now enabling integrated thin and multichannel audio

#8

Could such a display also function as a microphone?

Technically yes, piezo cells are reversible, just like about anything that can be used to emit sound. You can use the array for programmable directionality as well.

Re: High-quality OLED displays now enabling integrated thin and multichannel audio

#9
post #6

This is impressive. Though perhaps not very useful. Humans (and animals in general) are quite bad at precisely locating sound anyway. We only have two input channels, the right and the left ear, and any location information comes from a signal difference (loudness usually) between the two.

Localization of sound is primarily based on the time difference between the ears. Localization is also pretty precise, to within a few degrees under good conditions.

Re: High-quality OLED displays now enabling integrated thin and multichannel audio

#10
This is a long shot but anyone know if there's an audio recording of the sound the display produced? Curious

Edit: Found it: https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.20...

Go to supporting information on that page and open up the mp4 files

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