Hardware noise when using software?

[The Kontaminator]

Wasn't certain where I should post this, so if it's in the wrong group I
apologise.

More of a quest for knowledge than being a technical issue, but I wanted
to know why when I am say editing photos, or moving text/picture boxes
in Word, etc. Do I hear a quiet hissing noise come from my computer?

It only seems to be apparent to me when I'm moving a 'block' of visual
data if that makes sense. Say if in Photoshop I was moving a layer
around, the noise would become apparent ONLY when I was moving the layer
on screen, as soon as I stop the noise ceases.

It's not the display or the speakers as it continues to do it with them
both switched off.

Would just be very interested on anyone thoughts.

Thanks.

 

[philo]

Wasn't certain where I should post this, so if it's in the wrong group I
apologise.

More of a quest for knowledge than being a technical issue, but I wanted
to know why when I am say editing photos, or moving text/picture boxes
in Word, etc. Do I hear a quiet hissing noise come from my computer?

It only seems to be apparent to me when I'm moving a 'block' of visual
data if that makes sense. Say if in Photoshop I was moving a layer
around, the noise would become apparent ONLY when I was moving the layer
on screen, as soon as I stop the noise ceases.

It's not the display or the speakers as it continues to do it with them
both switched off.

Would just be very interested on anyone thoughts.

Thanks.

It's just the harddrive being accessed...
Since the HD is an electro-mechanical device...it will always make some
amount of noise...
especially when working with a lot of data

 

[Paul]

Wasn't certain where I should post this, so if it's in the wrong group I
apologise.

More of a quest for knowledge than being a technical issue, but I wanted
to know why when I am say editing photos, or moving text/picture boxes
in Word, etc. Do I hear a quiet hissing noise come from my computer?

It only seems to be apparent to me when I'm moving a 'block' of visual
data if that makes sense. Say if in Photoshop I was moving a layer
around, the noise would become apparent ONLY when I was moving the layer
on screen, as soon as I stop the noise ceases.

It's not the display or the speakers as it continues to do it with them
both switched off.

Would just be very interested on anyone thoughts.

Thanks.

The components that do power conversion, sometimes make audible noise.
The computer has a number of switching power blocks in it, and any of
those could be potential sources.

Paul