On Thu, 04 Jan 2007 16:53:09 -0500, Vinnie S.
wrote:

+++On 4 Jan 2007 10:39:31 -0800, "Telstar Electronics"
+++wrote:
+++
+++Anyone care to venture a guess what's inside this?
+++http://www.survival-systems.com/yeticom/cp-1.html
+++
+++
+++Someone has to briefly describe to me, the difference between Speech Compression
+++and Speech Proccessor. My Turner +3 mic has compression, which allows a steady
+++volume regardless of distance. I think my Icom 746 also has compression. But can
+++anyone be more specific?
+++
+++Vinnie S.
*********

Compression is essentially where the output signal is limited by
controlling the gain of a stage. This is accomplished by some means of
feedback of the output to the input to reduce gain as the input signal
becomes larger. The amount of compression is the amount of feedback to
reduce gain. One can go to a point to where the stage becomes an
attenuator by sufficient feedback. With opamps this can be a very
serious problem as they do not work well below unity gain.

Speech processing is a broad term that includes compression, clipping
and even DSP.

james