[Elecraft] Simulated Stereo

[Bob McGraw]

Yuck!  As a retired recording studio engineer, CBS Records, having the 
same signal out of phase by 180 degrees to one ear, is much like 
sticking and ice pick in ones ears.

Most systems will have a variable phase shift depending on frequency, 
usually not to exceed 30 degrees.   In this case, the leading phase 
signal will appear from that direction.   In others, bandpass filtering 
moves the higher frequency to one side and the lower to the other.  From 
an audio perspective, this still sounds like "fake stereo".    It is 
just messed up monaural.  There's lots of that today.

The K3S has the AFX function that does an excellent job of signal 
spatialization and sounds quite nice on SSB signals.

73

Bob, K4TAX


On 12/27/2021 4:10 PM, elecraft-request at mailman.qth.net wrote:
> Message: 1
> Date: Sat, 25 Dec 2021 16:46:03 -0700
> From: Douglas Hagerman<douglas.hagerman at me.com>
> To: Elecraft Mailing List<elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] Simulated stereo
> Message-ID:<A72A9133-F79E-4E80-9042-005FD7FD99FD at me.com>
> Content-Type: text/plain;	charset=us-ascii
>
>> The K3 (and I think the KX3 and K4) has a simulated stereo function
>> which allows you delay the audio to one channel slightly, which makes
>> signals seem to stand out from the noise. I believe that the radios
>> newer than the K3 also have the ability to create stereo separation by
>> pitch, which helps in picking out CW signals in QRM.
>>
>> My question is: is there some kind of device that you can get that will
>> take the monaural audio from a non-Elecraft radio or a K2 and produce
>> similar effects?
>> -- 
>> 73,
>> Victor, 4X6GP
>> Rehovot, Israel
>> CWops #5
>> Formerly K2VCO
>> https://www.qsl.net/k2vco/
> Some of the various Heil headphones, including the one on the Elecraft site, have a switch that passively selects between mono and simulated stereo by changing the phase between the two sides. It basically seems to widen the perceived space of the sound source, possibly helpful.
>
> Doug, W0UHU.
>
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> On 2021-12-25 6:46 PM, Douglas Hagerman via Elecraft wrote:
>
>> Some of the various Heil headphones, including the one on the
>> Elecraft site, have a switch that passively selects between mono and
>> simulated stereo by changing the phase between the two sides.
> Any*Stereo*  headphones can accomplish the same thing by simply adding
> a DPDT switch wired to reverse the connections (invert polarity) to
> one of the two ears.
>
> 73,
>
>      ... Joe, W4TV
>
> On 2021-12-25 6:46 PM, Douglas Hagerman via Elecraft wrote: