Multimodal Speech Synthesis System
KrillinAI integrates advanced speech synthesis technology and provides three voiceover modes: preset speech libraries, large model-generated speech and voice cloning. Its voice clone function uses hierarchical feature extraction technology:
- Basic timbre layer: physical features such as pitch and resonance peaks are extracted by Mel spectral analysis
- Rhythmic features layer: capturing rhythmic patterns such as speaker's pause habits, speed of speech changes, etc.
- Emotional expression layer: analyzing the range of intonation fluctuations to reproduce the emotional characteristics of the original speech
The system requires 10-30 seconds of clean speech samples, which are converted to 128-dimensional acoustic fingerprints by a feature encoder. During the synthesis phase, these feature parameters guide the acoustic model to adjust the output to ensure that the cloned voice maintains a similarity of 80% or more to the original sample. The technical documentation specifically points out that when used in conjunction with the AliCloud speech service, the cloning effect can be further improved because the cloud-based model has a larger parameter scale and a finer emotion control module.
This feature is particularly suited to creative scenarios where branded accounts need to standardize their voiceover style, or audiobook authors want to maintain consistency in their characters' voices.
This answer comes from the articleKrillinAIThe
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