Hi Geoff, cut your weeds and we can both think hard on what "Speech
Compression" really is. I got to thinking and about all it can be is
clipping of the high voice peaks, and increasing audio drive. I will
look at the ARRL Hand Book and see what they have.
73 Karl K5DI
Geoffrey Mackenzie-Kennedy wrote:
Karl Larsen, K5DI wrote:
Hi Geoff, I would suggest if your making a mini-module let it be a
speech compression device, not a clipper. Compression increases
average power used and sounds louder. If set too high it sounds odd
and can create clipping that generates unwanted sidebands.
On my radio I run compression all the time. It works in
conjunction with the Automatic Linearity Control the radio has. If
you don't have ALC it is harder to set the Compression.
-------------------------------------------------------------
Hi Karl. A moot point!! I'll have to get back to you later today as I
must get out to mow down the grass, mutating into elephant grass.
With my K2/100 I use the audio compressor and a 'flicker' of ALC, but
RF clipping and again a 'flicker' of ALC in the homebrew rig. One has
to be very careful not to use too much ALC - other problems can arise.
My apology for my haste, will reply later.
73,
Geoff
GM4ESD
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