When using dubbing channels like F5-TTS, CosyVoice, GPT-SoVITS, and Fish-TTS in video translation software, if the reference audio is AI-generated, the results can be frustrating: the output may sound chaotic and far from the expected clarity and naturalness.
Many users online have complained about this issue, especially when using AI-generated voices as references, as the results are much less stable than with real human recordings. So, what's going on? Don't worry—let's explore 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 intonations or a synthetic feel. These subtleties are barely noticeable to our ears, but to another AI (like a TTS tool), they act like "noise" that can confuse the system.Hidden "Voiceprint Watermarks"
Some AI voice tools secretly embed "markers" (similar to watermarks) for anti-piracy or source tracking. These watermarks might include high-frequency signals that are inaudible to humans, but when a TTS tool analyzes the audio, it can get "stuck," leading to garbled output.AI Struggles to Imitate AI
Many TTS tools are trained on real human speech, making them experts at mimicking human voices. However, when faced with AI-generated audio, which has different patterns, they can get confused—like asking someone who only draws cats to draw a dog, resulting in a mismatched style.
What Can You Do?
Use Real Human Recordings as References
Whenever possible, opt for genuine human voice recordings. This provides the most stable results, as TTS tools handle them more effectively.Choose High-Quality AI Audio
If you must use AI-generated audio, pick one that sounds natural and free of noise. You can use audio editing software to clean it up and remove potential interference.Adjust TTS Tool Parameters
Some tools allow you to tweak settings like pitch, speed, or emotion. Experiment with different configurations to find what works best and improves the sound quality.Try a Different Tool
Different TTS tools vary in their ability to handle AI-generated audio. If your current channel isn't working, switch to another one—you might be pleasantly surprised.
TTS Tips and Tricks
- Keep Sentences Short: Use clear, concise text inputs; long sentences are more prone to AI errors.
- Ensure Clean Reference Audio: Prefer real human recordings and avoid AI-generated or watermarked files.
- Experiment Repeatedly: If the output isn't good, try changing the audio or text—don't hesitate to test multiple times.
- Read the Documentation: Check if the tool supports AI audio to save time and effort in selection.
AI-generated reference audio can confuse TTS tools due to "traces" or watermarks, leading to messy sound. The best solution is to use real human recordings.