![agc nicecast plug in agc nicecast plug in](http://www.sm5bsz.com/lir/agc/sim5-slow.gif)
Selecting the AGC detector to match that is critical for performance.Įlsewise the detector is just matched to your decision slicer in suchĪ way that the use of the system dynamic range is maximized (this isĮssentially what Jerry suggested earlier). If you do have FEC with soft decision then Is defined by your decision slicer and any FEC soft-decision metrics Since you're building a digital demodulator "too big" or "too small"
#AGC NICECAST PLUG IN HOW TO#
>"small", how to adjust gain, how to do it on fixed point The problems are how to measure is the signal "big" or
#AGC NICECAST PLUG IN FULL#
>not higher than 80-90% of the full scale and lower than 40-50% of full >FSK 50-450kHz, processing is on fixed point 55xx. > Can't offer much more without more info. >is to determine is the signal is big or small. >often, there should be some highmark and lowmark levels. Your algorithm is about to change gain too (increases the gain) several times faster than it falls. It will work, but it will work better if the control signal rises
![agc nicecast plug in agc nicecast plug in](https://radiosolution.info/wp/wp-content/uploads/2015/05/Dollarphotoclub_62531097.jpg)
> seems it can be easily adapted to fixed point. > Your AGC is a hell of simple! I even have doubts it will work. Will be different, and overload probably won't be a consideration.Įngineering is the art of making what you want from things you can get. Keeping the soft passages well above the ambient noise, the criteria One in a car audio system to avoid discomfort from loud passages while Without one, noise in pauses can rise to annoying levels.Īn AGC circuit is a volume compressor - half of a compander. To prevent the gain from rising too high during intervals of silence is When the signal becomes more faint, this can improve S/N while (Because sudden impulsive inputs may overload anyway, saturatingĪrithmetic is still called for.) Coupled with a slower gain increase Rapid gain reduction is needed to handle sudden increases in signal.
![agc nicecast plug in agc nicecast plug in](https://64.media.tumblr.com/59ccef4179df7e820c5df7acc8535090/c569c65d7ba059e1-2d/s500x750/586e8989b69128a94a7aa694c8e73b0e915d0de2.jpg)
Most applications, the largest signal that avoids overload is wanted. It can become complicated in practice, but the concept is simple. It seems to be the most difficult task to develop I need a reliable estimate of what is "big" and if(signal too big)decrease gain by percentage "k1",