Speak Spanish like a Castilian native.
In your own cloned voice.
Clone your voice once. Accent Studio makes it speak Spanish with a genuine Castilian accent, without touching how your original clone sounds anywhere else. The “th” sound in Castilian Spanish isn't a lisp, as the popular myth claims, it's a documented sound shift traceable in written Spanish since the 16th century.
Language
Spanish
Region
Spain
Spanish accents
2 to choose from
Code
castilian
How a Castilian speaker would put it
¿Nos vemos luego para grabar, vale?
Shall we meet later to record, okay?
How it works
From your voice to Castilian in three steps.
Clone your voice
Upload a clean 30-second clip of yourself or someone you have permission to clone. Any language works, Polyvox extracts the voice identity, not the accent.
Pick Castilian
Open Accent Studio in the create flow and choose Castilian for this clip. Your original clone stays untouched, and reverts to its natural accent whenever you don't pick one.
Generate and share
Get an MP3 of your voice speaking fluent Castilian Spanish in seconds. Download, share a link, or post directly.
About the Castilian accent
What makes Castilian sound like Castilian.
Where it's spoken
Spain. ~47 million people in Spain, the accent most Spanish-language textbooks are based on.
What it sounds like
Distinción: “c” (before e/i) and “z” are pronounced like the English “th”, a feature most of Latin America doesn't share.
Why Castilian is hard for generic TTS
Getting the th-sound half-right (applying it inconsistently, or to the wrong letters) is an instant giveaway of synthetic speech. Polyvox applies distinción exactly where Castilian Spanish calls for it.
Use cases
What you can do with a Castilian voice clone.
- Record Spanish training or onboarding videos with a Castilian narrator
- Dub a podcast or video into Castilian-accented Spanish without hiring a new voice actor
- Send a Castilian-accented voice message as a surprise or a prank
- Create Castilian audiobook narration in your own cloned voice
- Localize ad or marketing voiceovers with an authentic Castilian accent
- Build Spanish learning content that demonstrates the Castilian accent specifically
- Practice recognizing the Castilian accent with content in a familiar voice
- Rehearse a presentation in Castilian-accented Spanish before the real thing
FAQ
Common Castilian accent questions.
Does Polyvox support a Castilian accent?
Yes. Accent Studio lets you clone your voice once and generate a clip that speaks Spanish with a native Castilian accent. Getting the th-sound half-right (applying it inconsistently, or to the wrong letters) is an instant giveaway of synthetic speech. Polyvox applies distinción exactly where Castilian Spanish calls for it.
Is Accent Studio free?
No. Accent Studio is a Pro+ feature available on the Pro, Global, and Unlimited plans. The free plan speaks every language in the voice's own natural accent.
Does picking Castilian change my original voice clone?
No. Polyvox creates a separate, disposable Castilian variant just for the clips you choose it for. Your original voice clone is never modified, and every other clip keeps sounding exactly the way it always has.
How accurate is the Castilian accent?
Polyvox reproduces the specific phonetic features that define Castilian speech, not just a generic regional wrapper. Distinción: “c” (before e/i) and “z” are pronounced like the English “th”, a feature most of Latin America doesn't share.
What other Spanish accents can I pick?
Accent Studio also offers Mexican for Spanish. Switch between them per clip, your cloned voice stays the same underneath.
Other accents
Or pick a different accent.
Ready to sound Castilian?
Accent Studio is included with Pro, Global, and Unlimited. Create your account, clone a voice, and generate a Castilian clip in under a minute.