[Elecraft] Is there a reason the receive is so Skinny

[Joe Subich, W4TV]

Absolutely!  In addition, overly "pumped" low end simply adds hum,
rumble and IMD to the audio.  Professional audio engineers have
learned to cut the low end on audio production/recording/broadcast
for a very long time except where absolutely necessary and even
then most pros use a low-cut set around 100 Hz unless they are
trying to record a bass, tuba, piano, organ, etc. with significant
program content below low C (~130 Hz) or deep C (~65 Hz).

Very few male voices are pitched below 100 Hz - it seems to me the
lowest recorded was around 80 Hz - the fundamental range of a bass
vocalist is typically E2 (~82 Hz) to E4 (~330 Hz).  Communications 
quality (ITU: 2.8 KHz bandwidth) adequately covers 200 to 3000 Hz or
100 to 2900 Hz.  Even "toll grade" (2.1 to 2.4 KHz bandwidth) audio
in the old days was more than adequate for reasonable communications.

It is particularly worth noting that the ratio of fundamental to
harmonic content in speech is quite high and systems which do not
substantially reduce the fundamental power typically sound muddy and
distorted.  Broadcast systems typically use preemphasis (decreased
lows/increased highs) in transmission with corresponding deemphasis
(high frequency roll off) in reception to reduce channel noise and
improve reception.

The infantile fascination with SSB flat from 50 Hz to 4000 Hz is
nothing more than another childish, bandwidth wasting, QRM generating
temper-tantrum from those who don't know better or don't care.

73,

    ... Joe, W4TV


On 4/27/2014 10:13 AM, David Cole wrote:
> Hi,
>
> Sorry to jump in on the thread, without an answer, but a question--  why
> the need for a low end below 200 HZ?  We are not broadcast stations
> after all...  Maybe I am missing something but I see zero reason for all
> of this Extended SSB, all it seems to do is cause splatter...
>