Partially garbled audio on Huggingface online demo, for a short English input

[rotemdan]

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Environment Details

Huggingface online demo (V1.5 medium)

Steps to Reproduce

Tried to synthesize the text "We are not responsible for any misuse of the model, please consider your local laws and regulations before using it."

All parameters are left as default:

✔️ Expected Behavior

Normal speech.

❌ Actual Behavior

The audio starts normally as "We are not", and then followed by garbled audio, that sounds sped-up. The total audio duration is only 3 seconds.

https://github.com/user-attachments/assets/45b1d12c-575c-457d-bfc4-45a5f9c6f634

audio.zip

I got this after trying the model with only 2 test inputs, meaning that it's not that rare. If I try to synthesize the same text several times again, I get other voices, and they don't seem to have this issue (as much as I've tested).

Related issues

Seems closely related to issue #632, but I decided to open a new issue because:

• My input was in English
• Issue #632 is described as "Swallowing words, reading normally at first, then speeding up, and then not reading the last word of the sentence completely", but it's not exactly what is seen here. Here it starts normally but continues with a completely garbled audio
• A comment on that issue says the issue is resolved
• It was produced by the online demo, and the latest model (1.5 medium)