{Spam?} Re: [ICOM] Bad TX audio on 775

[John Luthy]

Ok I had to google "compandering"  
and this is what I found

For a standard 4000 Hz voice channel Nyquist's theory says an
8000 Hz sample rate is required, and at 11 bits per sample we
have 88,000 bps.  Bit rate is bandwidth and bandwidth is
expensive, so compandering was added to reduce the sample size
to 8 bits, thus reducing the bit rate to 64Kbps.  Compandering
is done by making the quantization logarithmic instead of
linear.

This is WAY past my pay grade.  

John 
N7JL
----- Original Message ----- 
From: "C Whitaker" <whitaker at pa.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Saturday, October 14, 2006 4:43 PM
Subject: Re: {Spam?} Re: [ICOM] Bad TX audio on 775


> Maybe a compandering problem if it's worse while
> speaking low.
> 
> 73  WB2CPN   a.k.a.  Clete
> 
> 
> 
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