Thank you, gentlemen.
PD and DM: I'm not far from The Chilterns, in fact: unfortunately, the north-eastern end of the chain, where the Beeches are few and in thinnish strings. It's popular with walkers and replete with land-owners hence short of campers. And DM, thank you for telling me of R. Mabey's book. No, I'd not heard of it. My posting is the first thing I've done to spread the net.
Grumps, I use behind-the-ear white-noise generators. They help, only a little. The wind in the trees helps a lot. I can only guess that its the difference between synthesized and natural. (The WNGs' sound is, frankly, wearing; while nature's uplifting. There it is.)
That's a good question you ask about the wind thro' green Beech-leaves or brown. The answer is it's soothing thro' both. I think it's the leaf's wavy airfoil shape rather than the apparent greater rustliness of the brown, desiccated state. Quite by chance this came to me over these last four seasons. I found myself being drawn to the few clumps of Beeches near-ish to me. But it was only after the leaves had fallen that the penny dropped, too. Of course, the Beech is unique amongst deciduous varieties in retaining its leaves long into winter. There is a God, but it took me a while to recognize it.
At night I have a sound-device that puts the sound of the sea into a pillow fitted with small speakers. It helps – again, only a bit.
The tinnitus can drive one stir-crazy. That's why I need to get out. Thank you, all of you, for your help.
AF.