Extraocular which controls eye positioning. The flickering causes issues with eye positioning.
How can we hear the difference in cables in a bad room?
Hi after spending the last months measuring my room with REW and reading about room acoustic in small rooms.
I began to wonder how we can hear differences in equipment when the frequency respons in most rooms are bad.
Just think about it! a power cable - why can you hear a difference? is it a timing issue, noise? are the human hearing much more sensitiv to delay / phase issues than frequencies.
If you have knowledge in this area then I would love to be educated (:
Happy new year to all of you.
I began to wonder how we can hear differences in equipment when the frequency respons in most rooms are bad.
Just think about it! a power cable - why can you hear a difference? is it a timing issue, noise? are the human hearing much more sensitiv to delay / phase issues than frequencies.
If you have knowledge in this area then I would love to be educated (:
Happy new year to all of you.
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- 24 posts total
This was good as it made me look it up. Quick PubMed search produces mostly articles about accomodation response to flickering (and comparisons of different frequencies at that). I could not find anything about extraocular muscle involvment, though. The articles I skimmed are a bit old and had only abstracts without the section method. Is there some explanation of the mechanism for this extraocular muscle involvement with flickering? Maybe repositioning after being fooled that the object moved slightly? Not much to do with audio reproduction, but interesting to think about, anyway. |
When reading or similar visual work, you eye uses high speed movements called saccades to change the visual focus point. When reading the movements are small but fast and regular. Most of the body of work on this was done in the 90s, but re-emerged as a topic in the later 2010's as solid state lighting emerged as the next dominant technology. From a paper: The results are consistent with the view that flicker has two distinct effects on reading, both of which are potentially disruptive. The first relates to an increase in the number of prematurely triggered saccades, which are, as a result, less accurate. The second is an increase in the number of saccades perturbed in flight, which land short of their intended target. These two mechanisms may have different consequences for readers, depending on their reading style. No, not related to audio, but related to how our perceptive systems can adapt to non ideal circumstances and how even though adapting, the situation is non-ideal, requires addition processing, and leads to fatigue, even though everything seems "okay" on the surface. This was a point argued above w.r.t. brain adoption to room acoustics. |
audiozenology, Thanks, I completely forgot about saccades as a term. Given the magnitude of the flickering light presence everywhere, it is interesting that not many articles about its effects can be easily obtained on PubMed. It may be that more of that research is funded by the industries rather than by the traditional bio-science so it ends elsewhere. If I understood this abstract correctly, my semi-wild guess about "being fooled" is semi-correct. Makes me semi-proud. https://www.ncbi.nlm.nih.gov/pubmed/9503913 At the same time, to stay in the audio realm, this one connects saccadic eye movements, fooling, and auditory stimulus in one neat mix. https://www.ncbi.nlm.nih.gov/pubmed/23637981 |
- 24 posts total