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You can design a Southern French AI voice with one prompt

Describe the accent, gender, age and delivery in one sentence and Gradium returns a Southern French voice id you call from the API or the SDK. Every Southern French voice is built to order, so the age, gender and delivery are yours to specify rather than picked from a shelf.

Marseille accent, Marseillais, Provençal accent, accent du Midi and southern french all describe the same voice. Write it as Southern French in your prompt.

Hear it

  • Southern French
    0:00

    Regarde-moi ça ! Le Vieux-Port est encore plein de monde ce soir, c'est incroyable. On va s'asseoir en terrasse pour manger une bonne.

The prompt
that produced it

Une voix d'homme marseillais de 74 ans, chaleureuse et généreuse, accent méridional marqué, voyelles finales chantantes, débit lent.

A worked example: change any part of it and the voice changes with it. The four styles below show what moving pitch, pace, energy or purpose does to the same accent.

Pitch2/5
lowhigh
Pace3/5
slowfast
Energy3/5
calmboisterous

Southern French
in four styles

A prompt is built from parts: the accent, the age, then pitch, pace, energy and what the voice is for. Change one part and you get a variation. These four are starting points to adapt, not finished prompts.

Pitch 3 · Pace 3 · Energy 3

Everything to the middle. Watch Final schwas are pronounced: it is the feature a mid-range read is most likely to soften, and the one a listener places Southern French by.

A Southern French male voice, 30 to 45, for customer service: easy and unforced, with mid pitch, steady natural pacing, medium energy and a natural unforced resonance. Ideal for voice agents, assistants and dialogue that has to sound unscripted.

In colour: the 9 parts that make this style.

What makes Southern French
sound like itself

Each feature below is something the prompt has to encode, or something a careless prompt will accidentally undo.

Final schwas are pronounced
Where Parisian drops the final e, southern French sounds it, so une petite fille gains syllables. This single difference changes the syllable count of every line and is the accent's clearest marker.
Nasal vowels gain a consonant
The nasal vowels are partly denasalised and followed by an audible velar nasal, so pain leans towards paing. It is the feature most associated with the Midi and it is immediately recognisable to any French listener.
Sing-song contour
Southern French carries wider pitch movement across the phrase than Parisian, which is the accent's warmth. Requesting a flat or neutral read pulls it back towards the capital.
More even syllable weight
Because final schwas survive, syllables sit closer to equal weight and the rhythm evens out. A fast pace value therefore reads differently here than in Parisian, where compression is doing the speeding up.

Design your own custom Southern French voice
for your use case

The catalogue tags voices at the parent-accent level, so any southern french voices roll up under Standard French. Voice Design maps this accent, so the page routes to the designer. This is the difference between a voice library and a voice model: a library can only offer you what it already holds, while Voice Design builds the accent on request.

The prompt,
and where it goes wrong

The method behind the prompt: what each clause does, what breaks it, and what it was tested on.

Questions?
Answered

Hear Southern French
in the studio

Every voice we ship clears blind listener comparison and an ELO ranking first, because roughly one candidate in a thousand has it. For Southern French, the feature that decides it is usually Final schwas are pronounced.

Paste the prompt, change the parts that matter to you, and generate. No recording, no casting, no licensing.