Vietnamese → Spanish
Spanish uses 27 sounds. You already own 18 of them from Vietnamese. The other 9 are the work — and 6 of those are the dangerous kind: close enough to something you already say that you will substitute them without hearing yourself do it.
The silent swaps
Your mouth has something close enough to reach for. These survive for years precisely because they sound right to you — the fix is hearing the difference first, not trying harder.
the move: labiodental → bilabial
Spanish: to have · written "b", "v"
Soft b/v between vowels — lips don't fully close.
Your /v/ is the one in vui (happy, fun).
the move: labiodental → dental
Spanish: nothing · written "d"
Soft d between vowels, like English 'th' in this. Nearly vanishes in -ado endings.
Your /v/ is the one in vui (happy, fun).
the move: labiodental → dental
Spanish: beer · written "z", "ce", "ci"
Spain only. Latin America: /s/.
Your /f/ is the one in phở (phở (noodle soup)).
the move: close, but not identical
Spanish: cow · written "b", "v"
b and v are the SAME sound. [β] between vowels.
Your /ɓ/ is the one in ba (three; father).
the move: close, but not identical
Spanish: finger · written "d"
Your /ɗ/ is the one in đi (to go).
Words you may say identically
Two or more Spanish sounds landing on one sound of yours. Until the ear separates them, the mouth cannot — which is what the ear trainer is for.
Genuinely new
Nothing in Vietnamese sits close to these. They sound foreign in your mouth — which is the good news: you can hear that you are not saying them yet.
boy
Closest thing you own: — but plosive → affricate, alveolar → postalveolar.
dog
Trilled. Contrasts with the tap: pero 'but' vs perro 'dog'.
Closest thing you own: — but nasal → trill.
but
One tap of the tongue — the American 't' in 'butter'.
Closest thing you own: — but nasal → tap.
Rhythm and pitch
The layer spelling never records, and the one that makes a correct sentence still sound foreign.
| Vietnamese | Spanish | |
|---|---|---|
| Rhythm | Syllable-timed, one tone per syllable | Syllable-timed |
| Stress | No lexical stress. Every syllable carries its own tone and its own full vowel, and none is reduced. What sounds like stress to an English ear is a syllable holding its tone longer or louder for emphasis, and grammatical words (đã, sẽ, được) being said lighter and faster than content words. | Fully contrastive, and mercifully written: if a word breaks the default pattern (stress on the second-to-last syllable for vowel/-n/-s endings, on the last otherwise) it carries an accent. Three-way minimal sets are common and the accent is the only thing separating them. |
| Pitch | lexical tone — pitch changes the word | No lexical tone. Intonation marks questions, helped by the opening ¿ so you know a rise is coming before you start reading aloud. |
What you have that Spanish doesn't
17 sounds with no job in Spanish. They are not mistakes — but they are where an accent leaks in, because a sound you own is easy to use when a hard one is due.
The honest caveat
This is a prediction from the shape of two sound systems, not a recording of you. It says what your inventory makes likely — it cannot know that your Vietnamese has a regional variety that already owns one of these, or that you learned Spanish from someone whose accent you copied. A teacher listening to you beats it. Use it to know what to listen for.
Other first languages: English · French · Portuguese · German · Italian · Georgian · Russian · Hindi · Mandarin Chinese · Cantonese · Korean · Japanese · Malay · Turkish