loudspeaker stereo imaging
 

Ian Molton wrote:

On Wed, 12 Nov 2003 09:27:19 +0000
Ian Bell wrote:


It has a lot to do with the positions of the HF and LF drivers and
your listening position. These result in errors which can muddy the
stereo sound field. The only real solution is to use dual concentric
speakers.

I'd be highly sceptical of that.

Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.

Then walk around the room and be enlightened.



That's because of room acoustics not the speakers. Given an acoustically
good room (a rarity indeed), what I said still stands.

Ian

loudspeaker stereo imaging
 

Ian Molton wrote:

Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.

Then walk around the room and be enlightened.

I stuck a finger in my ear and was enlightened.

Just fired up the sound test CD and tried this (1, 5 and 10KHz). Also did it
with one ear covered, both walking around and rotating my head while
standing still. Node-tastic or wot? Some of the peaks and troughs are so
close together, that there must be frequencies that will have a peak at one
ear and a trough at the other. I dare say that, for a given position, there
would peaks at one frequency and troughs at another.

Makes me wonder if all that stereo imaging stuff is worth the bother (not
that I bother, especially).


--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.

loudspeaker stereo imaging
 

Ian Molton wrote:

Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.

Then walk around the room and be enlightened.

I stuck a finger in my ear and was enlightened.

Just fired up the sound test CD and tried this (1, 5 and 10KHz). Also did it
with one ear covered, both walking around and rotating my head while
standing still. Node-tastic or wot? Some of the peaks and troughs are so
close together, that there must be frequencies that will have a peak at one
ear and a trough at the other. I dare say that, for a given position, there
would peaks at one frequency and troughs at another.

Makes me wonder if all that stereo imaging stuff is worth the bother (not
that I bother, especially).


--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.

loudspeaker stereo imaging
 

Ian Bell wrote:

That's because of room acoustics not the speakers.

What effect does room acoustics have on the sound? Interaction between the
sound sources and reflections from the walls/furniture?


--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.

loudspeaker stereo imaging
 

Ian Bell wrote:

That's because of room acoustics not the speakers.

What effect does room acoustics have on the sound? Interaction between the
sound sources and reflections from the walls/furniture?


--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.

loudspeaker stereo imaging
 

"Mike Gilmour" wrote
Someone else wrote:
Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.


Then walk around the room and be enlightened......

....whilst you watch the smoke curl upwards gently from your tweeters :-)

Why would that necessarily happen?


Martin
--
M.A.Poyser Tel.: 07967 110890
Manchester, U.K. http://www.fleetie.demon.co.uk

loudspeaker stereo imaging
 

"Mike Gilmour" wrote
Someone else wrote:
Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.


Then walk around the room and be enlightened......

....whilst you watch the smoke curl upwards gently from your tweeters :-)

Why would that necessarily happen?


Martin
--
M.A.Poyser Tel.: 07967 110890
Manchester, U.K. http://www.fleetie.demon.co.uk

loudspeaker stereo imaging
 

"Fleetie" wrote in message
...
"Mike Gilmour" wrote
Someone else wrote:
Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.


Then walk around the room and be enlightened......

....whilst you watch the smoke curl upwards gently from your tweeters
:-)

Why would that necessarily happen?


Quite a few audiophiles are over 50. Consider you've lost some or all of
the ability to hear 10 kHz either due to age or premature hearing loss,(when
did you last take a recognised hearing test??) So what do you do? You turn
the gain up high..the tweeters are happily pumping out high levels of HF
with the 'listener' oblivious of the level.

Mike



Martin
--
M.A.Poyser Tel.: 07967
110890
Manchester, U.K.
http://www.fleetie.demon.co.uk

loudspeaker stereo imaging
 

"Fleetie" wrote in message
...
"Mike Gilmour" wrote
Someone else wrote:
Put *any* set of speakers in your room, and play a (say) 8-10kHz sine
wave out of both speakers.


Then walk around the room and be enlightened......

....whilst you watch the smoke curl upwards gently from your tweeters
:-)

Why would that necessarily happen?


Quite a few audiophiles are over 50. Consider you've lost some or all of
the ability to hear 10 kHz either due to age or premature hearing loss,(when
did you last take a recognised hearing test??) So what do you do? You turn
the gain up high..the tweeters are happily pumping out high levels of HF
with the 'listener' oblivious of the level.

Mike



Martin
--
M.A.Poyser Tel.: 07967
110890
Manchester, U.K.
http://www.fleetie.demon.co.uk

loudspeaker stereo imaging
 

Wally wrote:

Ian Bell wrote:

That's because of room acoustics not the speakers.

What effect does room acoustics have on the sound? Interaction between the
sound sources and reflections from the walls/furniture?


Yes.

Ian