When using AI dubbing channels like F5-TTS, CosyVoice, GPT-SoVITS, or Fish-TTS in video translation software, if the reference audio is an AI-generated voice, the result can be frustrating: sounding jumbled and far from the clear, natural sound you'd expect.
Many users online have complained about this issue, especially when using AI-generated voices as a reference. The results are often less stable compared to using real human recordings. Why does this happen? Let's explore the reasons and solutions!
Why does this occur?
AI Voices Have a Unique "Flavor"
AI-generated speech (e.g., synthesized with other TTS tools) may contain distinctive "digital fingerprints," such as odd tones or a synthetic quality. While these might not be obvious to our ears, they can act as "noise" to another AI (TTS tool), potentially confusing it.Hidden "Acoustic Watermarks"
Some AI voice tools subtly add "marks" (similar to watermarks) to prevent piracy or track the source. These watermarks might be high-frequency signals that are inaudible to humans but can cause the TTS tool to "stumble" during analysis, resulting in garbled audio.AI Isn't Great at Imitating AI
Many TTS tools are trained on human voices, making them adept at mimicking human speech. However, when faced with AI-generated voices, which have slightly different patterns, they can become confused. It's like asking someone who only draws cats to draw a dog—the style is likely to go astray.
What can you do?
Choose Real Human Recordings as Reference
Whenever possible, use recordings of real human voices for the most stable results. TTS tools handle these more smoothly.Select Reliable AI Audio
If you must use AI-generated audio, choose audio that sounds natural and free of noise. You can use audio software to clean it up a bit and remove potential interference.Adjust the TTS Tool's Parameters
Some tools allow you to modify the pitch, speed, or emotion. Experiment to find the right settings that can improve the sound quality.Try a Different Tool
Different TTS tools have varying degrees of compatibility with AI audio. If your current channel isn't working well, switch to another. You might be pleasantly surprised.
TTS Tips & Tricks
- Short Sentences Work Better: Keep the input text short and clear. Long sentences are more prone to errors.
- Clean Reference Audio: Use human recordings and avoid AI-generated or watermarked audio.
- Try Multiple Times: If the result isn't good, try a different audio or revise the text. Don't be afraid to experiment.
- Read the Manual: Check if the tool supports AI audio. Choosing the right tool saves effort.
AI-generated reference audio may cause TTS tools to become confused due to "fingerprints" or watermarks, resulting in garbled audio. The best solution is to use real human recordings.