All audio generated by our AI products is watermarked with SynthID. This imperceptible watermark is woven directly into the audio output, ensuring AI-generated content remains detectable to help prevent misinformation.
【方法】文章提到使用SynthID技术对音频进行水印处理，但未详细说明水印的检测方法、在音频处理过程中的鲁棒性，以及如何验证水印的'不可察觉性'。这种安全技术的有效性需要更透明的技术细节和独立测试来支持。
the watermarking is nothing else for the end user than fixing a random seed and making this sampling kind of deterministic
这句拆掉了「水印会让输出变差」的直觉恐慌：水印只作用在采样层，不改模型权重，也不必重训——它是在若干等概率的候选词里按密钥挑一个。代价不在质量而在多样性和可复现性。但也要看到反面：正因为它只是采样偏置，抗改写能力天然有限。
Gemini Omni and Nano Banana 2 Lite use [SynthID](https://deepmind.google/blog/identifying-ai-generated-images-with-synthid/) watermarking. You can verify AI content through the Gemini app, Gemini in Chrome or Search.
文章提到使用SynthID水印来验证AI内容，需要核查这一水印系统的有效性和可靠性。
All audio generated by Gemini 3.1 Flash TTS is watermarked with SynthID. This imperceptible watermark is interwoven directly into the audio output, allowing the reliable detection of AI-generated content to help prevent misinformation.
令人惊讶的是：该模型使用名为SynthID的不可察觉水印技术，将水印直接编织到音频输出中，以便可靠地检测AI生成的内容。这种技术对于防止AI语音被用于传播虚假信息至关重要，但大多数用户可能并不了解这种隐形水印的存在和工作原理。
Journalists should also be wary of publishing raw audio leaked from Zoom meetings, particularly if the source is not sure whether audio watermarking was enabled or not.