# stereo wide diagram

+----o o----R--C----o o----+ | / . . . . . . .\ | | | | | L out ---R--+--C--+ +--C--+--R--- R out | | | | +--R--+ +--R--+
feedback | | feedback L -in ------------+ +------------ R -in | | L +in R R R +in | | | | | GND GND | L source R source
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Damn,..... it didn't turn out.
Anyone know how to make a stereo wide circuit??
thanks,
Shaun
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On 11/09/2010 18:01, Shaun wrote:

Puzzled. What on earth was that sprawl?
:-)

from ..... g o o g l e .....
e.g.
http://sound.westhost.com/project21.htm
Off topic here, try sci.electronics.basics
--

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I did a google, but I didn't get much relevant results. Must have been the wording I use.
all the best,
Shaun
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If you have a stereo signal which is suffering cross-talk between the channels (signal is leaking both ways between channels), the effect is to narrow the channel separation and a consequent reduction of stereo effect.
This can be overcome to some extent by passing some small signal level between the channels, but inverted, so it's cancelling out the cross-talk. If you then increase this negative signal which is passed between the channels so it's more than cancelling the crosstalk, you are then crudely widening the stereo effect.
In circuit design, this is most easily done where there's an amplifier stage involving an operational amplifier with negative feedback to limit the gain and reduce noise. Link the left and right operational amplifier negative inputs via a suitable resistance, depending on the circuit impedances at that point and the amount of signal you want to bleed between the channels. It is interesting to experiment with different levels of signal bleeding across between channels negatively and listening to the effect on the stereo sound - it's quite stunning.
--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]