Open Discussion of Discrimination, Notch, and Silencer Filtering and Impact on Depth

[vferrari]

Open discussion of Discrimination, Notch, and Silencer filtering and impact on depth. Says it all.

I have always argued that Disc is a signal processing filter that will attempt to detect and filter out ferrous signals before the audio target ID is processed by the Deus and that Notch is simply an audio mask applied after the audio target ID is determined (once it passes through the discrimination filter and silencer filter (if applicable)). To keep things relatively simple lets not confuse the issue by discussing the ver 2 signal processing filters associated with the Deep program. Therfore, setting Disc to 10 is NOT the same as setting Notch to 10. Furthermore, unlike notch, Disc can adversely affect depth of desirable targets if set much above 15 and Andy states that XP says for the horseshoe ferrous/nonferrous graphic to be stable/reliable you have to apply at least Disc level of 5.

Discuss.

 

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[gene the machine]

I generally try to keep my disc at 5 or below. Usually reactivity around 2 if possible and have been experimenting with silencer at 1 or 2. I do notice a depth difference from silencer going from 1 to 2. The sound definitely is louder at 1 than at 2 but sometimes while in a iron infested site setting it at 2 helps me to identify a signal better, it's much cleaner but weaker. I use ground notch and until I got the HF coils I used notch at 98-99 but now that could be a good signal especially at the highest frequency on each coil. I haven't worked with either of the HF coils very much yet so I have a way to go on learning them. Most of the time when I first got the Deus i'd try to run as open as possible wanting to get the most depth out of it but now have learned that I have to quiet it down so that it's not so chatty so that I can hear the quieter sounds from it. The chattiness just obscures those quieter sounds.

 

[Jeff H]

A good topic. I just wish that XP would issue an in depth treatise explaining the difference between Disc and Notch. If they already have, PLEASE let me know about it

Silencer is the one setting I haven't really played with. All my programs have it set at "0" . I actually set up an adjacent program this weekend with it set to "3" but forgot to use it when over a target to see the difference. Along the same lines that Gene was saying about some Silencer helping him find the goods, I have definitely noticed that with Disc. I used to run wide open, but found I would miss stuff due to all the clamor. I went over the same spot with a bit of Disc ("8"), and was surprised to hear good targets jump out. I will sometimes use a negative Disc in clean areas when looking for deep goodies. Everything seems to hit a bit harder, including iron. I do like the sound of the iron when I use a negative Disc.