The Arcane Ear is a device which gives you the power to use the Sound of Noteblocks as Redstone Signal through walls, Etc.
With 24 different pitches per block, and five different instrument sounds, that means there can be up to 120 Arcane Ears placed nearby with no overlapping frequencies.
NOTE: The Ear gives only a short impulse as Redstone signal. And you need to tune it like a Note Block.
If you have allready the Warded Stone and Doors you can build a kind of number lock to open the door. Just use normal pressure plates, Note blocks next to them. The equal number of Ears you need inside and space for "AND-Gates" from redstone mechanisms. You set your ears inside the house (i prefer 3), then put 3 note blocks on different materials outside. Then you build your mechanism that you need to get the signal of the ears in a special order, so that 1. you have to run from the correct side over the plates and also you need to tune the note blocks correct. I dont think anybody would be smart enough to try all through. Thats also really nice for Adventure maps. You can also negate all of it with an ear / note block cicle. Means all notes will be palyed all few seconds.
This device with some intelligent planning can allow you to send redstone pulses very long distances with very little actual redstone. Just set up a button to a note blocks to play a note. Go out 47 blocks from the note block and place an Arcane Ear which is tuned to that pitch. From there place a single redstone wire and another note block. Repeat this until you get the distance you want.
"Sound is another aspect of the natural world that could use some study. Maybe it can be harnessed with magic to create a magical sensor of some kind? The Arcane Ear is a device that is capable of detecting the sound emitted from nearby note blocks. If it hears a note it recognizes it will emit a short redstone pulse. The Arcane Ear needs to be tuned in a manner identical to note blocks, the tone and note it listens for depends on the material it is placed upon. "
Research availbale after Unified Thaumic Field Theory.
CraftingEditInfusion Altar with 1 Zombie Brain, 2 Arcane Wood Blocks, 4 Gold Ingots, 1 Iron ingot and one Redstone.