Hi EQF:

Besides eartones/blocks, what other sensations do you refer to?

People who rotate in place and have the intensity increase are not standing in a static distance wave field from a fixed source (given the source power is constant while they rotate). This sounds more like if it's happening and related to a wave then it is probably from a higher frequency source with either changing power (or maybe wave shape). A long period wave does not change too much in ~15 secs (avg perceive time?)

One seemingly successful person reports that the intensity does not change with rotation of the person during the sensation (tones/blocks).

There's a link somewhere (Don?) showing the earth's averaged magnetic field...you can see the rate of change of intensity (averaged over a period...not dynamic). People don't always hear tones always...so you'd be mre interested in a dynamic picture.

There may be other material in the pipeline which may touch on this area in a little more detail....