If your voice is even, you are speaking in a very controlled way which makes it difficult for people to tell what your feelings are.

source: Collins Dictionary, entry "even" (adj.), #6

Hi keeblerelf,

Since you seem to be so keen on learning, I’ll throw in a couple of freebies:

1) “What is meant by” is a Germanism. The correct wording is “what does (something something) mean.”

2) “Thank you for helping” sounds more natural than “thank you for helping me.”

De nada. :-)

Hello redcranes, thank you very much for your feedback.

In an En- En forum I was told by a native speaker to say for helping me and regarding meant by: in my OALD I read the example What is meant by 'batch processing' ?

I don't see any distinction between What is meant by 'even voice'? and What is meant by 'batch processing' regarding the meaning of What is meant by. But don't get me wrong, I much appreciate your help. Now I don't know what I have to do actually.

By the by, I'd be interested if you would prefer to say I don't see any distinction between... or if you would prefer ..any difference between...here. Thank you very much.

These are not things you can learn by accumulating information, keeblerelf. Language cannot be exhaustively explained. Your English is fine; what you need is a better feel for the spoken language. Find a native English speaker who wants to improve his or her German, set up meetings (shouldn’t be impossible in the age of Zoom, even if you live in a cave) and just talk talk talk and listen listen listen. You’ll start picking up things by osmosis. Seriously. This is no way to learn in the long run, and you’re giving people helping-out fatigue.

[OT re #5 ...even if you live in a cave... LOL]