How voice learning works
How Sparky learns your tone, merges transcripts, and calculates Voice Confidence.
Sparky builds a structured voice profile from your transcripts: tone, sentence style, vocabulary, hooks, banned words, and how you open posts. Onboarding role and goals still shape the angle of each post.
When your profile updates
- After every project transcript is stored (including transcript file uploads).
- For thought leader and expert guest projects, only your selected speaker lines are analyzed.
- When you approve a project post you edited - Sparky may add style correction rules from the diff.
Voice Confidence score
The top bar show Voice Confidence as a percentage. It answers one question: how much transcript material has Sparky already used to learn how you write and speak?
The score is not a grade on post quality. It is a depth meter. More processed transcripts mean a richer profile and a higher number, up to a built-in cap of 95%.
How the score is calculated (C(n))
Behind the scenes SparkVox uses a simple curve called C(n). The n is how many project transcripts have been counted toward your voice profile (each new project transcript counts once; re-processing the same project does not).
Think of it like filling a glass: the first transcript moves the score a lot. The second moves it again, but a bit less. By the time you have several episodes in the system, each new one still helps, but the number inches forward more slowly. That is intentional - early projects teach Sparky the basics fast; later ones refine what is already there.
The curve never quite reaches 100%. It levels off near 95% so the score always leaves room for more learning as you keep publishing. Deleting a project does not lower the score; transcript counts only go up.
| Transcripts counted (n) | Typical Voice Confidence |
|---|---|
| 0 | 0% |
| 1 | ~39% |
| 2 | ~61% |
| 3 | ~75% |
| 5 | ~88% |
| 10 or more | ~95% (cap) |
How profiles merge
Each new transcript strengthens patterns Sparky already knows, adds new ones, and drops anything clearly contradicted. Your profile is never replaced unless you fire Sparky.