On Tue, 18 Sep 2007 17:42:50 -0700, Telstar Electronics
wrote:

|On Sep 18, 6:10 pm, Skipp checks in once in a while
wrote:
| : What are you basing this statement on? Fact or fiction? Please give a
| : reference(s) that support your claim that holding the modulation at
| : 100% can't be done.
|
| I have never heard of any audio AGC circuit that doesn't have some measure
| of overshoot. You claim to have invented an audio agc circuit with zero
| overshoot..? When at least thousands of engineers have been trying to
| approach the equivalent results for well over a half century.
|
| : On the other hand... AGC circuits (like is used in VoiceMax) are well
| : known... and support my claim that this rock-solid modulation level
| : can be achieved.
|
| There's a different in heavily compressed everthing audio and actual
| usable audio level without all the background level/noise. Care to tell
| us how you do it with such a basic circuit... even in generic terms is
| fine with me.
|
|
|Good to hear from you Skipp. You're right... every AGC circuit has
|overshoot. The overshoot on VoiceMax has a duration of about 1mS using
|the Analog devices SSM2166. You can see the complete specs of this
|chip at http://www.analog.com/UploadedFiles/...ts/SSM2166.pdf
|www.telstar-electronics.com
|--------------

Feedback systems can be overdamped, underdamped or critically damped.
AGC is nothing more than a feedback control network. Any EE should
know that from Controls class which is a requirement. And by the way
you need to make a C or better in the class. You must have made a D or
and F in that class.

james