I’m experiencing a persistent issue with the TTS (Text-to-Speech) functionality of the Gemini API. My TTS generation, which previously worked perfectly, now consistently produces a low-level hissing or static noise that is present in all generated audio. This noise is particularly noticeable when t…

I had the same problem on September 18th. Were you able to fix it?

well idk how to fix it cuz i can’t write code but i’m using auphonic to fix it however it takes more time

I have this hissing for quite a while - I posted on X and tried tagging - I found out that the longer the generation is lasting the more the hissing gets in there. Seems like a model issue as it persists on all voices. Found no way to solve it…

Same thing here. This issue is really annoying. I used to create high quality content but now the problem persists and quality is really poor. I hope they fix it anytime soon.

Hi guys @Aizen_Sosuke @Piotr_Jarecki @Rafael_Silva @Jhonny_Chambers Wanted to reproduce from my end . could you please confirm if this is happening with both gemini-2.5-flash-preview-tts and gemini-2.5-pro-preview-tts? Additionally, does this occur with all audio lengths, and if so, please provide…

@Pannaga_J yes, both gemini-2.5-flash-preview-tts and gemini-2.5-pro-preview-tts seem to have the same issue. I create short length audios, and the hissing has always been there since Sept 15. Thanks!

Thanks for flagging this. We have updated the concerned team about it .

Hello guys, any recent updates on this issue? Has anybody (user / developer) been able to find a solution? Thanks!

Same promblem for me. It impossible to use because of noise. Is there anybody solved this?

Persistent Noise in TTS Audio Generation

Google AI Studio

Adam_S February 2, 2026, 6:38pm 30

Yes, a similar conversation here - I’ve given up on the model at this point… : Metallic sounds using gemini-2.5-flash-preview-tts

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Persistent Noise in TTS Audio Generation

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