Tom, I think he was referring to what's typically called the speech 
processor on a ham rig, which is just a compressor.

-----Original Message----- 
From: Tom Brennan
Sent: Saturday, August 23, 2014 9:29 AM
To: [log in to unmask]
Subject: Re: general question

David, speech processing is the larger case which can include speech
compression.  Speech compression is a very specific alteration of speech
involving a number of kinds of potential manipulations of speech to bring it 
in
to a smaller envelope usually for transmitting either through a hearing aid 
or a
radio system transmitter.  Speech processing can include anything from
compression to removing background noise from speech and a host of other
alterations (usually modifications) to the speech.

Tom


Tom Brennan  KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html

On Sat, 23 Aug 2014, David Pearson wrote:

> Date: Sat, 23 Aug 2014 04:14:34 -0400
> From: David Pearson <[log in to unmask]>
> Reply-To: For blind ham radio operators <[log in to unmask]>
> To: [log in to unmask]
> Subject: general question
>
> Hi:
>
> Is there any practical difference between speech processing, and speech
> compression, and ifso, what is it?
>
> Sincerely yours,
>
>
>
> David S. Pearson-wa4dsp
>
>
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