But the ctx (and other detectors) do 'make that zone silent' !
What you're not understanding, is the practicalities of metal detectors, and the 'dynamics...realities...physics.....call it what you may' of how metal detectors work.
Any detector, when swept over the ground, sees soil, cowsh?t, and coins etc.
At every sampling-second of the electronics's acquisition, it produces a number relative to the SUM of what it is seeing; but that sum is a progressive sequence of measurements.....
Imagine a target, of stationary value 10....you sweep towards...over...and past it.
It then acquires a sequence of samples...2, 4, 7, 10, 10, 6, 5, 3.....
Now the circuitry 'integrates' those samples...sums them, I.e. = 47.
It shows the resulting vdi and blob on the screen at point related to the peak 10.
Now you block out 10.....but that's not the 'full picture'.....so you still will hear those 'elements' not suppressed by just 10.
So a zone of silence needs to be 'wider' (numerically) to improve its effectiveness.
The drawback to that, is it detracts from the audio produced by numerically adjacent targets etc.
So what I'm trying to say, is that you can/do silence a 'number', but targets are made up of many numbers....of which only two are shown.....hence the iron-mask method as compared to individual cell method of tackling iron discrimination.
The subject could fill a book.....my attempt here is but a 'comma's' worth.
Matt.
What you're not understanding, is the practicalities of metal detectors, and the 'dynamics...realities...physics.....call it what you may' of how metal detectors work.
Any detector, when swept over the ground, sees soil, cowsh?t, and coins etc.
At every sampling-second of the electronics's acquisition, it produces a number relative to the SUM of what it is seeing; but that sum is a progressive sequence of measurements.....
Imagine a target, of stationary value 10....you sweep towards...over...and past it.
It then acquires a sequence of samples...2, 4, 7, 10, 10, 6, 5, 3.....
Now the circuitry 'integrates' those samples...sums them, I.e. = 47.
It shows the resulting vdi and blob on the screen at point related to the peak 10.
Now you block out 10.....but that's not the 'full picture'.....so you still will hear those 'elements' not suppressed by just 10.
So a zone of silence needs to be 'wider' (numerically) to improve its effectiveness.
The drawback to that, is it detracts from the audio produced by numerically adjacent targets etc.
So what I'm trying to say, is that you can/do silence a 'number', but targets are made up of many numbers....of which only two are shown.....hence the iron-mask method as compared to individual cell method of tackling iron discrimination.
The subject could fill a book.....my attempt here is but a 'comma's' worth.
Matt.