כל עוד את מדברת בשקט, גם החדר מרגיש רגוע יותר.

כל עוד means as long as.

It introduces a condition that continues over time:

• כל עוד את מדברת בשקט... = As long as you speak quietly...

It is very common in Hebrew for ongoing conditions.

Because the sentence is addressing one female.

In Hebrew, verbs in the present tense agree with gender and number:

• את מדברת = you (feminine singular) speak / are speaking
• אתה מדבר = you (masculine singular) speak / are speaking

So if you were speaking to a man, you would say:

כל עוד אתה מדבר בשקט, גם החדר מרגיש רגוע יותר.

מדברת is the present tense feminine singular form of the verb לדבר (to speak).

Here is the basic present-tense pattern:

• מדבר — masculine singular
• מדברת — feminine singular
• מדברים — masculine plural / mixed plural
• מדברות — feminine plural

So את מדברת literally means you are speaking or you speak, depending on context.

בשקט means quietly, softly, or in a quiet way.

It is made of:

• ב־ = in / with
• שקט = quiet

So literally it is something like in quiet.

In natural English, it usually becomes:

• quietly
• softly
• sometimes in a quiet voice

גם means also, too, or sometimes even depending on context.

In this sentence:

• גם החדר מרגיש רגוע יותר

it adds the idea that not only you/your speaking is quiet, but the room too seems calmer.

So the feeling is something like:

• the room also feels calmer
• or even the room feels calmer

It gives the sentence a slightly more expressive, natural tone.

Literally, מרגיש means feels. But in Hebrew, just like in English, this can be used figuratively.

So החדר מרגיש רגוע יותר does not mean the room is literally having emotions. It means:

• the room feels calmer
• the room has a calmer atmosphere
• the room seems more relaxed

This kind of personification is natural in both Hebrew and English.

Because החדר (the room) is a masculine singular noun.

In Hebrew, adjectives and present-tense verb forms agree with the noun:

• החדר מרגיש — masculine singular
• הדירה מרגישה — feminine singular, because דירה is feminine

So מרגיש matches החדר.

For the same reason: החדר is masculine singular.

The adjective must agree with the noun:

• חדר רגוע — a calm room
• דירה רגועה — a calm apartment

So in the sentence:

• החדר מרגיש רגוע יותר

both מרגיש and רגוע are masculine singular to match החדר.

יותר means more.

In Hebrew, comparatives are usually made like this:

adjective + יותר

So:

• רגוע = calm
• רגוע יותר = calmer / more calm

Other examples:

• גדול יותר = bigger
• שקט יותר = quieter
• נעים יותר = more pleasant

So מרגיש רגוע יותר means feels calmer.

In Hebrew, the verb to be is usually not used in the present tense.

So where English says:

• the room is calm

Hebrew often just says:

• החדר רגוע

In your sentence, there is already a different verb:

• מרגיש = feels

So Hebrew does not need any extra word for is here.

Yes, you could, but the emphasis changes a little.

• גם החדר מרגיש רגוע יותר puts more emphasis on the room too
• החדר גם מרגיש רגוע יותר puts more emphasis on also feels calmer

Both are understandable, but גם החדר sounds especially natural if you want to highlight that the calming effect spreads to the room itself.

Not exactly.

• שקט usually means quiet or silent
• רגוע usually means calm, relaxed, or peaceful

So:

• את מדברת בשקט = you are speaking quietly
• החדר מרגיש רגוע יותר = the room feels calmer

Using both words in the same sentence is nice because they are related, but not identical.

You would change את מדברת to match the group.

To a group of women:

• כל עוד אתן מדברות בשקט, גם החדר מרגיש רגוע יותר.

To a group of men or a mixed group:

• כל עוד אתם מדברים בשקט, גם החדר מרגיש רגוע יותר.

The rest of the sentence stays the same because החדר is still masculine singular.