When using voiceover channels like F5-TTS, CosyVoice, GPT-SoVITS, or Fish-TTS in video translation software, if the reference audio is AI-generated, the results can be frustrating: the output may sound messy and completely unlike the clear, natural voice you expected.
Many users online have complained about this issue, especially when using AI-generated speech as a reference, as the results are far less stable than using real human recordings. Why does this happen? Don't worry, let's discuss the reasons and solutions!
Why Does This Happen?
AI Voices Have Their Own "Quirks"
AI-generated speech (e.g., synthesized by other TTS tools) may carry unique "digital traces," such as odd intonation or a slightly synthetic feel. These subtleties might be barely noticeable to our ears, but to another AI (the TTS tool), they act like "noise" that can easily confuse it.Hidden "Voiceprint Watermarks"
Some AI voice tools secretly add "markers" (similar to watermarks) for anti-piracy or source tracking. These watermarks could be high-frequency signals inaudible to humans, but they might cause the TTS tool to "stutter" during analysis, resulting in garbled audio.AI Isn't Great at Imitating AI
Many TTS tools are trained on real human speech, making them experts at mimicking human voices. However, when they encounter AI-generated sounds—which have slightly different patterns—they get confused. It's like asking someone who only knows how to draw cats to draw a dog; the style is likely to go off track.
What Can You Do?
Use Real Human Recordings as Reference
Whenever possible, use genuine human voice recordings. This yields the most stable results, and TTS tools handle them more smoothly.Choose a Reliable AI-Generated Audio
If you must use AI-generated audio, pick one that sounds natural and free of noise. You can lightly process it with audio software to remove potential interference.Adjust the TTS Tool's Parameters
Some tools allow you to modify pitch, speed, or emotion. Experiment with different settings a few times; finding the right configuration might improve the sound quality.Try a Different Tool
Different TTS tools vary in their ability to handle AI audio. If your current channel isn't working, switch to another one—you might be pleasantly surprised.
TTS Quick Tips
- Short Sentences Are More Reliable: Keep input text concise and clear; long sentences are more prone to AI errors.
- Keep Reference Audio Clean: Use real human recordings, and avoid AI-generated or watermarked audio.
- Experiment Multiple Times: If the result isn't good, try different audio or tweak the text—don't be afraid of a little extra effort.
- Read the Manual: Check if the tool supports AI audio; choosing the right tool saves time and effort.
AI-generated reference audio can confuse TTS tools due to its inherent "traces" or watermarks, leading to messy output. The best solution is to use real human recordings.