Version

1.7.0

Curseforge

https://www.curseforge.com/minecraft/mc-mods/spectrum

Details

Spectrum 1.7.0 added 4 types of mushroom-based wood: Slate Noxwood, Ebony Noxwood, Ivory Noxwood, and Chestnut Noxwood. Log, wood (as in 6 bark-sided blocks), and "sapling" versions of these woods are listed as Noxcap Stems, Noxcap Hyphae, and Noxshrooms.

we asked you to check if they have correct noteblock bass sound like all wood types should. if they dont thats the reason they arent detected and its their fault. so many modshave not been updated properly to 1.20 regarding this change

Can you check if they have the sound "bass"? that's a common issue nowadays. There is nothing we can do to fix this on our side. Only devs can fix the woods' sound.

EDIT:
& can you update the mod to the latest version before you check?

the logs are spectrum:[slate/ebony/ivory/chestnut]_noxcap_stem with the stripped variants listed as spectrum:stripped_[slate/ebony/ivory/chestnut]_noxcap_stem. The plank versions are listed as spectrum:[slate/ebony/ivory/chestnut]_noxwood_planks if you need those as well.

i see. "stem" and spectrum:ebony_noxcap_stem for a log,
spectrum:ebony_noxwood_planks for a plank

strange, I'll take a look.

Putting a noteblock on a Noxwood block does make the noteblock produce a bass sound instead of any other sound. The behavior is consistent across the types of Noxwood.

Ok, what is the ID of Noxwood?

it should be similar to the format ID as Minecraft: spectrum:noxwood_log,