Pink Floyd - Dogs

Posted by: Consciousmess on 25 September 2007

Hiya,

I was just listening to Pink Floyd Dogs this morning and I am curious about something...

There are obviously numerous other songs that have music presented this way, but at one point in the song the 'guitar' sound comes from both speakers at their periphery. What I mean is the sound comes from the left and right speakers but on the outer left and outer right sides and the guitar sound is identical.

The question I have, then, is how is this done? Surely if the human hears two identical sounds from the outer edges of the two speakers, the human hears the illusion of the sound coming from the centre?

Isnt that one of the thing that makes hifi so wonderful - the speakers disappearing.

But thats why Im perplexed, how do they go about making it so you are hearing the exact same sound but simultaneously on the outer edges of both speakers?

I know Radiohead have recorded some songs like this as well but could anyone elucidate me?!!!!

Many thanks

Jon
Posted on: 25 September 2007 by Staedtler
I don't know for certain, I'm only guessing, but introducing a slight time delay into the ouput from one speaker to the other would allow your brain to discern where the sound is coming from, even if the sound that is playing is the same...just a hypothesis.
Posted on: 25 September 2007 by Consciousmess
Hi Jagster,

I suspected that myself, but some hunch I have tells me it cant be that simple as what is the minimum time delay for the brain to perceive it as two sounds as opposed to 'one'???!!

Jon
Posted on: 25 September 2007 by blythe
That's precisely how it's done - time delay.

Remember those Boom Boxes with "spacial" setting to give an illusion of "wider stereo"?

Done in the same way Winker
Posted on: 25 September 2007 by Consciousmess
Brilliant - thanks then Blythe!

Incidentally, I see youre from Birmingham which is where Im from also...

Jon