|
|
|
|
|
|
by HelloNurse
882 days ago
|
|
|
Most types of speaker are a microphone, they just need to be wired up correctly (hence the mention of a "capable preamp") to be used as one.
For example, a piezoelectric device that deforms when driven by an electric current produces a little current when deformed by external forces. |
|
|
As in capable of amplifying the low signal from the speakers reasonably without too much noise. There is likely a proper term I do not know.