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2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

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4545866 No.4545866 [Reply] [Original]

>Talk into phone
>It's 'broken down' or some shit
>It comes out as your voice, exactly the same at the other end.

The hell is happening in there?

>> No.4545911

Come here, Watson! I need you!

>> No.4545929

Hello /v/

>> No.4545947

Actually that happened to me twice today. Hmm.

>> No.4545953

You're asking how microphones and speakers work?

>> No.4545972

Sounds like digital schenanigans to me.
Echo cancellation out of order?
It happens.

>> No.4545985

OP, sound waves cause vibration in certain parts of the microphone which convert the vibration into electrical signals.

Mechanical energy -> electrical energy

These electrical signals are communicated over vast distances to a speaker on the receiving end. At the receiver the electrical signal is converted back into mechanical vibrations - sound.

Electrical energy -> mechanical energy

That's the gist of it.

>> No.4545988

Holy shit, that kid's blood pressure.

>> No.4545990

>>4545972
Fourier transforms are some magical shit, son.

To OP:
Actual phones today don't work exactly like analog phones in the past. Today, the signal is digitized, transmitted, and then recombined, whereas in the past a piezoelectric-created analog signal was wholly responsible for the phone.

>> No.4545997

>>4545990
Actually they used carbon-granule mics and (later) electrets, not piezos.