Pitch hold can be useful to some. But the beauty of this platform is that we can tweak it to our own style of hunting. Basically, instead of hearing a steady Threshold pitch (which we can set at a given frequency), Pitch hold simply varies the Threshold to an audio pitch representing the response tone generated by the last target passed over. Some folks (like me) are in a "comfort zone" when listening for changes in a Threshold that always returns to a certain pitch. Others would prefer to not "go back to" a Threshold tone that is set to a given frequency, and listen to changes made by the next target. I prefer to have the Threshold go back to a set frequency for the following reason..... if I am detecting in an area where there are multiple targets of the same metallic content, with Pitch Hold, there will be no change in Threshold pitch when I go from one to the other. In other words, if I happen to pass over a dime and get a high tone, the detector will continue to produce that high tone (as a Threshold) as I continue to sweep the coil. IF an adjacent target is another dime, the pitch will not change. It might sound clipped or broken. But the Threshold in Pitch Hold will be the same pitch frequency as the second coin. And depending on how you have your Volume Gain and Volume Limit, it could be difficult to hear that second dime.
If folks are going to make the effort to learn Pitch Hold, I'd encourage you to use multiple tone audio. When using Combined Audio, you only have five different target responses available. Depending on how you set up your bins, your Threshold tone could end up being the same tone for a "keepers" as it as for that last piece of "trash". As such, continuing to hear one of those five tones for a Threshold tone, instead of setting a separate pitch for the Threshold, you'll need to pay very close attention to how each target responds.....not just listening for a change of pitch. JMHO HH Randy
