That was my point, just because you can only perceive at one limit, does not mean there is nothing beyond that like Ultrasound. Anyhow, was analogy about perce

That was my point, just because you can only perceive at one limit, does not mean there is nothing beyond that like Ultrasound. Anyhow, was analogy about perception and sample rates and what your measuring. Clearly didn't make it that clear and sorry for that.