How Speechgen's Smart Caching Simplifies Text-to-Speech

07-09-2025

What Is Smart Caching?

Smart caching in Speechgen is an advanced feature designed to save time and costs during text-to-speech synthesis. By storing and reusing previously voiced sentences, it ensures efficiency and minimizes redundant processing.

Key Features of the Technology

1. Reuse of Voiced Sentences:

   • Speechgen remembers each sentence you synthesize.

   • If you make changes to the text, only new or modified sentences are processed, while the unchanged ones are retrieved from memory.

2. Efficient Combination:

   • The system seamlessly merges new and cached sentences into a single audio file, eliminating the need for complete revoicing.

Benefits at a Glance

• Time Efficiency: Spend less time on repeated voiceovers.

• Cost Savings: Pay only for new content rather than the entire text.

Practical Example

When voicing an educational course, adding a short introduction to each lesson with other services might mean revoicing all lessons. With Speechgen, only the new introductions are voiced, while the original content remains intact and cost-free.

Important Considerations

1. Cache Capacity:

   • The cache applies to texts of up to 100,000 characters.

   • For longer texts, Speechgen switches to a specialized mode for large blocks, accommodating up to 2,000,000 characters.

2. Storage Time:

   • Cached sentences remain available for 7 days.

   • Full voiceover history is accessible in your profile for 30 days.

3. Caching Rules:

   • Only exact matches (character by character) are reused.

   • Minor edits, such as adding or removing punctuation, mark sentences as new and require revoicing.

What Changes Affect Caching?

• Content Edits: Any modification to a sentence, whether it’s changing a word, punctuation, or adding tags like <break>, results in revoicing.

• Voice Settings: Adjusting the speed, tone, or speaker triggers a complete revoicing, as these parameters redefine the audio output.

Adjustments Without Extra Costs

• Pauses: You can modify pauses between sentences or paragraphs without revoicing.

• Format Changes: Switching audio formats (e.g., ogg, wav) or adjusting the sample rate does not incur additional costs.

Why Choose Speechgen?

With smart caching, Speechgen offers unmatched efficiency:

• Lower Costs: Avoid paying for unchanged sentences.

• Speed: Revoicing is faster and more streamlined.

• Flexibility: Edit and refine your projects without worrying about repeated charges.

Conclusion

Speechgen’s caching technology redefines TTS by optimizing costs and workflow. It’s the ideal solution for anyone looking to produce high-quality voiceovers efficiently and economically.