It's possible these terms are used in specific contexts, but without more information, it's difficult to define their meaning.
Here are some possible interpretations:
* Misinterpretation of "Black Noise" and "White Noise": These terms refer to specific types of noise in acoustics.
* White noise: A sound that contains equal energy at all frequencies. It sounds like a static hiss.
* Black noise: A hypothetical sound that contains no energy at any frequency, meaning it would be complete silence.
* Metaphorical Language: The terms could be used metaphorically to describe sounds that are:
* Black sounds: Sounds that are dark, heavy, or ominous.
* White sounds: Sounds that are bright, clear, or uplifting.
* Specific Subcultures: It's possible these terms are used within a specific subculture or community with a unique meaning.
If you can provide more context about where you encountered these terms, I might be able to give you a more accurate interpretation.