Description of voice qualities (credits per character):

1. Standard (1 Credit)
   A solid, basic synthetic voice that is clear and easy to understand but relatively neutral and emotionless. Ideal for simple read-aloud functions or short texts.

2. Wavenet (4 Credits)
   Natural and smooth voices based on advanced technology, providing particularly human-like and authentic speech. They offer clear emphasis and a pleasant, natural melody.

3. Chirp (4 Credits)
   High-quality, fresh voices with a friendly and bright tone. They sound lively and are especially suited for casual content like podcasts or promotional videos.

4. Chirp3 (4 Credits)
   An enhanced version of Chirp voices featuring even clearer pronunciation and particularly pleasant emphasis. Perfectly suited for longer texts or high-quality content that requires a professional touch.

5. Neural2 (4 Credits)
   Extremely realistic and natural-sounding voices that closely mimic real human speech. These voices are particularly suited for interactive applications, audiobooks, or professional presentations.

6. Casual (4 Credits)
   Relaxed, informal voices with a casual tone. Perfect for everyday texts, social media posts, entertainment, or personal assistants intended to sound approachable and friendly.

7. Polyglot (4 Credits)
   Multilingual voices that excel at mixing and correctly pronouncing words or phrases from multiple languages within the same text. Ideal for international content, foreign-language quotes, or texts containing many loanwords.

8. News (6 Credits)
   Voices specifically developed for reading news. They sound neutral, professional, and matter-of-fact, making them excellent for informative content such as articles, reports, or news broadcasts.

9. Studio (40 Credits)
   Exceptionally high-quality premium voices that sound like they were recorded in a professional studio. Ideal for professional content, advertisements, or movies where sound quality and clarity are essential.