[WM]: standard audio source

[kotaro1976+watermarkingworld@gmail.com]

Hi watermakers,

I study the watermarking for audio signals.
I have a questions.

In the still image watermarking, I have often seen their watermarks are evaluated over certain cover images like "Lena" or "Bamboo".
So we can compare the effects or performances of their methods of watermarking.
But are there such standard cover contents in the world of audio watermarking?
Comments and references will be appreciated.

Thank you for reading my poor English.

P.S.
Can we embed watermarks to silent audio signals like John Cage "4:33"?  

----
Kotaro Sonoda


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