Enmascaramos un sonido para medir la vía aérea.

Enmascaramos comes from the verb enmascarar, which literally means to mask.

This form can be:

• present indicative: we mask
• preterite: we masked

In isolation, enmascaramos is ambiguous because the nosotros form is the same in both tenses. The surrounding context tells you which one is meant. In a scientific or procedural sentence like this, it is often understood as we mask.

Spanish often leaves out subject pronouns because the verb ending already shows who is doing the action.

• Enmascaramos = we mask / we masked

So nosotros enmascaramos is possible, but usually unnecessary unless you want emphasis or contrast.

Spanish usually needs an article with countable singular nouns.

• un sonido = a sound

Leaving out the article would sound incomplete in normal Spanish. Here un introduces one sound, probably not identified yet or not important to identify individually.

La suggests that the airway is being treated as a specific, known thing in the context.

In technical, medical, or scientific language, Spanish often uses the definite article where English might also use the, or sometimes where English is a bit looser. So:

• medir la vía aérea = to measure the airway

It refers to the airway as the relevant anatomical structure, not just any airway in general.

Para + infinitive is a very common way to express purpose in Spanish.

So:

• para medir = in order to measure / to measure

The structure is:

• action + para
  • infinitive

Here:

• Enmascaramos un sonido para medir la vía aérea
  = We mask a sound in order to measure the airway

Yes. Medir is an irregular verb.

Its main irregularity is that in the present tense it usually changes e → i:

• mido
• mides
• mide
• medimos
• medís
• miden

Notice that nosotros and vosotros keep the normal stem: medimos, medís.

In your sentence, though, medir is in the infinitive, so you just see the dictionary form: medir.

Vía aérea is a set expression meaning airway in medical Spanish.

Literally:

• vía = way, route, passage
• aérea = aerial / air-related

So the literal idea is something like air passage, but the natural English medical translation is airway.

In Spanish, adjectives often come after the noun, especially when they classify or describe it in a technical way.

So:

• vía aérea = airway
• literally, way/passage air-related

This noun + adjective order is very normal in Spanish, especially in scientific or medical vocabulary.

The accent mark shows the stress and helps indicate the vowel sequence.

Aérea is pronounced with the stress on the é:

• a-É-re-a

Without going too deeply into spelling rules, the accent helps show the correct pronunciation and separates the syllabic pattern clearly.

Sometimes, but sonido usually means sound in a neutral sense.

• sonido = sound
• ruido = noise

In a technical sentence like this, sonido is more appropriate because it sounds controlled and neutral, not unwanted or chaotic.

Yes. It sounds natural, especially in an explanatory, technical, or procedural context.

Spanish often starts directly with the verb when the subject is omitted:

• Enmascaramos un sonido...

That can sound more direct and efficient than explicitly saying Nosotros enmascaramos...

So the sentence feels quite normal for a report, explanation, or medical procedure description.