Inspelningen bevisar att mikrofonen fungerar.

Because inspelningen is the definite form of the noun, meaning the recording.

• en inspelning = a recording
• inspelningen = the recording

Swedish usually attaches the definite article to the end of the noun instead of using a separate word like English the.

Here, -en marks definiteness: the.

For many en-words, the pattern is:

• en inspelning = a recording
• inspelningen = the recording

So the final -en works like English the.

It is an en-word:

• en inspelning
• inspelningen

This matters because Swedish nouns belong to grammatical genders/common patterns, and that affects articles and endings.

Bevisar is the present tense of bevisa (to prove).

• bevisa = to prove
• bevisar = proves / is proving

In this sentence, it means proves.

In Swedish, verbs do not usually change according to the subject.

So you get:

• jag bevisar = I prove
• du bevisar = you prove
• han/hon bevisar = he/she proves
• de bevisar = they prove

This is simpler than English, where the -s form appears with he/she/it in the present tense.

Att here means that and introduces a subordinate clause:

• Inspelningen bevisar = The recording proves
• att mikrofonen fungerar = that the microphone works

So att connects the main idea to the clause explaining what is being proved.

Because in this clause, mikrofonen is the subject and fungerar is the verb, so the normal order is subject + verb.

• att mikrofonen fungerar = that the microphone works

This is the basic Swedish clause order when there is no extra adverb changing the structure.

Mikrofonen is the definite singular form of en mikrofon:

• en mikrofon = a microphone
• mikrofonen = the microphone

Again, Swedish puts the definite article on the end of the noun.

Because Swedish usually expresses the by adding an ending to the noun.

So instead of saying something like the microphone, Swedish says:

• mikrofonen

This is completely normal for definite nouns in Swedish.

Fungerar means works, functions, or is working depending on context.

Here it means the microphone is functioning properly:

• mikrofonen fungerar = the microphone works / the microphone is working

Yes, funkar is a common, more informal alternative.

• mikrofonen fungerar = more neutral/standard
• mikrofonen funkar = more informal, everyday speech

Both are very common, but fungerar is usually better in careful or formal writing.

A rough English-friendly guide is:

• in-SPEHL-ning-en

A few notes:

• sp before a front vowel in Swedish is pronounced more like shp
• the ng in -ning is like the ng in sing
• the final -en is lightly pronounced

Exact pronunciation varies a bit by accent, but that rough guide will help.

Yes. It is a very natural and standard Swedish sentence.

It sounds clear and neutral, and it would fit well in everyday conversation, technical discussion, or written explanation.

Usually, with a sentence like this, att is kept:

• Inspelningen bevisar att mikrofonen fungerar.

In spoken Swedish, some conjunctions are occasionally dropped in casual speech, but for learners, it is best to use att here. It is the normal and correct choice.

The sentence has two parts:

1. Main clause: Inspelningen bevisar
   = The recording proves

2. Subordinate clause: att mikrofonen fungerar
   = that the microphone works

So the structure is:

• [Subject] + [Verb] + att + [subordinate clause]

That makes it a very useful model sentence for Swedish learners.