When using F5-TTS, CosyVoice, GPT-SoVITS, Fish-TTS and other dubbing channels in video translation software, if the reference audio is an AI-generated voice, the results can be a headache: it sounds messy and nothing like what you'd expect.
Many users online have also complained about this problem, especially when using AI voice as a reference, the effect is far less stable than real human recordings. What's going on? Don't worry, let's talk about the reasons and solutions!
Why does this happen?
AI voices have a "weird" taste AI-generated speech (such as synthesized with other TTS tools) may have unique "digital traces," such as strange pitches or a synthetic feel. These are not obvious to our ears, but to another AI (TTS tool) it's like "noise," which can easily confuse it.
Hiding "voiceprint watermarks" Some AI voice tools secretly add "marks" (similar to watermarks) to prevent piracy or track the source. This watermark may be a high-frequency signal that humans can't hear, but the TTS tool may "stuck" when analyzing it, resulting in a messy sound.
AI is not good at imitating AI Many TTS tools are trained with real human voices, and they are very good at imitating human voices. But when it comes to AI-generated voices, because the patterns are a bit different, they are a bit confused, like asking someone who can only draw cats to draw a dog, the style is easy to deviate.
What to do?
Choose a real human recording as a reference If possible, use real human voice recordings directly, the effect is the most stable, and the TTS tool can handle it easily.
Pick a reliable AI audio If you can only use AI-generated audio, then choose one that sounds natural and has no noise. You can use audio software to process it slightly to remove possible interference.
Adjust the parameters of the TTS tool Some tools allow you to change the pitch, speed, or emotion, try a few more times, and find the right settings, the sound may become better.
Try a different tool Different TTS tools have different adaptability to AI audio. If the current channel doesn't work, change it, maybe there will be surprises.
TTS Tips
- Short sentences are more reliable: Keep the input text as short and clear as possible, long sentences can easily cause AI errors.
- Reference audio should be clean: Use real human recordings, do not choose AI-generated or watermarked ones.
- Try a few more times: If the effect is not good, change the audio or modify the text, don't be afraid of trouble.
- Read the manual: Check whether the tool supports AI audio, choosing the right tool saves effort.
AI-generated reference audio may confuse the TTS tool due to "traces" or watermarks, resulting in a messy sound. The best way is to use real human recordings.