Emisija buke jedva da se čuje.

It is a fairly technical/formal phrase meaning noise emission or the emission of noise.

• emisija = emission
• buke = of noise

So the whole noun phrase refers to the amount or presence of noise being emitted, for example by a machine, device, vehicle, or industrial process.

In everyday speech, a Croatian speaker might more often say something simpler like Buka se jedva čuje if they just mean The noise can barely be heard.
But emisija buke is very natural in technical, environmental, or regulatory language.

Because buke is the genitive singular form of buka.

After a noun like emisija, Croatian often uses the genitive to express of something:

• emisija buke = emission of noise
• razina buke = level of noise
• izvor buke = source of noise

So buka is the dictionary form (nominative), while buke is the form needed here because it depends on emisija.

Jedva da means barely, hardly, or only just.

In this sentence, it adds the idea that the noise emission is so weak that it can scarcely be heard.

You will also see:

• jedva se čuje

That means almost the same thing. The version with da often sounds a bit more emphatic or idiomatic, as if saying it’s barely even audible at all.

So:

• jedva se čuje = barely audible
• jedva da se čuje = can barely be heard / hardly audible at all

Both are correct.

Yes, da introduces a finite clause here: da se čuje.

Croatian often uses jedva da + verb as a fixed-type expression meaning hardly/barely. Even though it looks like a clause structure, in practice learners can treat jedva da as a common expression.

So:

• jedva da se čuje = it can barely be heard

You do not need to translate da word-for-word every time. In English, it usually disappears naturally.

Because čuti se means to be heard or to be audible.

Compare:

• On čuje buku. = He hears the noise.
• Buka se čuje. = The noise is heard / The noise can be heard.

So se changes the meaning from someone actively hearing something to something being audible.

In this sentence:

• Emisija buke jedva da se čuje.

the idea is not someone hears the noise emission, but rather the noise emission is barely audible.

Here se is part of a reflexive/passive-like construction.

In many Croatian sentences, se helps create a meaning that English often expresses with:

• is heard
• can be heard
• is visible
• is felt

So:

• čuje se = is heard / can be heard

This is very common in Croatian and often sounds more natural than using a full passive.

For a learner, it is helpful to remember čuti se as a unit meaning to be audible.

Čuje is the 3rd person singular present tense form of čuti.

It is singular because the grammatical subject is emisija, which is singular:

• emisija = emission

Even though buke comes right after it, buke is not the subject. It is only part of the phrase emisija buke.

So the agreement is:

• Emisija ... čuje se
• singular subject + singular verb

Yes, but it sounds more formal/technical than everyday speech.

A native speaker might say this in contexts like:

• product specifications
• environmental reports
• engineering
• legal/regulatory language

In casual conversation, people would more likely say something like:

• Buka se jedva čuje.
• Gotovo se ne čuje.
• Jedva se išta čuje.

So the original sentence is absolutely valid, but it has a technical register.

Yes, Croatian word order is fairly flexible, but not every version sounds equally natural.

The original:

• Emisija buke jedva da se čuje.

is perfectly good and fairly neutral in a formal context.

You may also hear:

• Jedva da se emisija buke čuje.
• Emisija buke jedva se čuje.

These are also possible, with slight differences in emphasis.

One thing to notice is that se is a clitic, and clitics tend to appear near the beginning of their clause, usually in second position. That is one reason why Croatian word order can feel different from English.

Yes, but the meaning becomes less technical and a bit broader.

Compare:

• Emisija buke jedva da se čuje. = The noise emission is barely audible.
  This sounds technical and specific.
• Buka se jedva čuje. = The noise can barely be heard.
  This is more everyday and general.

So if you are talking about measurements, machinery, or regulations, emisija buke is a better fit.
If you are just describing what you hear, buka is often more natural.

Not exactly in the same way as English, but it is passive-like in meaning.

English often says:

• The noise emission is barely heard
• The noise emission can barely be heard

Croatian usually prefers the se-construction:

• Emisija buke se čuje
• Emisija buke jedva da se čuje

So instead of a full passive, Croatian often uses verb + se to express something like is heard / can be heard.

That is why the sentence may feel passive in meaning, even though its structure is characteristically Croatian.