SPEAKE(a)R: Turn Speakers to Microphones for Fun and Profit [pdf] (2017)

#1

Post by Eridanus2 » Sun, Apr 19, 2026, 8:45 AM UTC

Re: SPEAKE(a)R: Turn Speakers to Microphones for Fun and Profit [pdf] (2017)

#2

Post by [deleted] » Sun, Apr 19, 2026, 8:56 AM UTC

[deleted]

#3

Post by BFV » Sun, Apr 19, 2026, 9:05 AM UTC

[flagged]

#4

Post by me_jumper » Sun, Apr 19, 2026, 9:12 AM UTC

This needs a (2017), I was so confused why this was published again, seemed so familiar.

#5

Post by hecanjog » Sun, Apr 19, 2026, 9:13 AM UTC

BFV wrote: post #3

[flagged]

This shouldn't be downvoted. Transducers being reversible is a neat and non-obvious thing.

#6

Post by [deleted] » Sun, Apr 19, 2026, 9:18 AM UTC

[deleted]

#7

Post by saagarjha » Sun, Apr 19, 2026, 9:18 AM UTC

me_jumper wrote: post #4

This needs a (2017), I was so confused why this was published again, seemed so familiar.

Fixed

#8

Post by dnnddidiej » Sun, Apr 19, 2026, 9:19 AM UTC

hecanjog wrote: post #5

BFV wrote: post #3

[flagged]

This shouldn't be downvoted. Transducers being reversible is a neat and non-obvious thing.

Motors can be dynamos too

#9

Post by saagarjha » Sun, Apr 19, 2026, 9:19 AM UTC

hecanjog wrote: post #5

BFV wrote: post #3

[flagged]

This shouldn't be downvoted. Transducers being reversible is a neat and non-obvious thing.

It's probably downvoted because it sounds somewhat nonorganic.

#10

Post by jpc0 » Sun, Apr 19, 2026, 9:37 AM UTC

A magnet in a coil operates both ways, this is non intuitive but perfectly sound.

Not sure if it's mentioned in the article but microphones can be speakers too...