On Sat, 8 Sep 2007 20:05:04 -0500, "Big Joe" wrote:

|Sure I like the sound of clipping to a small amount.
| As you know all Commercial, and Ham FM radios since the begging, has had
|a CLIPPER built in followed by a Low pass filter ( Motorola used to call it
|a splitter filter ) . This goes to a Deviation adjustment to feed the
|modulator. Does a good job at two things. It holds the deviation (
|Modulation ) to a fixed point and also clips off some of the Voice P-P
|levels to help increase the average voice level.
|
|----------------

It is called a splatter filter. Besides any time you use clipping you
must follow the clipper stage with a low pass filter in order to
restore the clipper o utput to the original bandwidth. Otherwise y ou
have splatter.

There are many techniques to insure the maximum deviation without
exceeding the allowed bandwidth.


|So it Seems to sound OK to all the other FM radio users.
|If I needed a Broadcast Radio quality sound then Sure I would use a
|Compressor throughout the system.
| Looking at your board it looks like you are using a somewhat fast Audio agc
|which is OK and the noise gate is then even more important.
|
|------------

If one wanted broadcast quality sound you would need far more than
10KHz bandwidth. With 10KHz bandwidth your audio response is going to
be in the 2 to 2.5 KHz range. While this is adequate for voice
communication, it is far to poor for music.


james