Voices

Language	`id`	Name	Gender	Default
`tr`	`alp`	Alp	male	✓
`tr`	`kaya`	Kaya	male
`tr`	`ece`	Ece	female
`tr`	`aysu`	Aysu	female
`en`	`jessica`	Jessica	female	✓
`en`	`james`	James	male
`en`	`emily`	Emily	female
`en`	`oliver`	Oliver	male
`de`	`lena`	Lena	female	✓
`de`	`lukas`	Lukas	male
`fr`	`camille`	Camille	female	✓
`fr`	`louis`	Louis	male
`es`	`lucia`	Lucía	female	✓
`es`	`diego`	Diego	male
`it`	`lorenzo`	Lorenzo	male	✓
`it`	`giulia`	Giulia	female
`ru`	`anna`	Anna	female	✓
`ru`	`ivan`	Ivan	male

voice takes the id or the name, without regard to case or accents ("Lucía", "lucia", "LUCIA" are the same voice).
OpenAI names also work. Female: alloy, coral, nova, sage, shimmer, marin. Male: ash, ballad, echo, fable, onyx, verse, cedar. They select a voice of that gender in the language.
An unknown name gives the default voice; an unknown custom voice id answers 404. X-Voice says which voice was used.