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A comment on A theory of Zoom fatigue. Parent comment

Re:A theory of Zoom fatigue by londons_explore on Tuesday April 21, 2020 @08:51AM (#22934469)
The real test if a decent VC or phone system is you can sing a song with the other person, and neither think they're out of sync.

No modern system allows that. Some old ones (analogue TV) did.

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Re:A theory of Zoom fatigue by bluGill on Tuesday April 21, 2020 @12:04PM (#22936183)
If the other person isn't close to you no system can do it. At about 1000 miles you will be out of sync no matter what system. Sensitive singers will run into trouble at just 500 miles. Speed of light in different mediums is slower that vacuum, radio can probably get over 1000 miles if you can get line of sight.
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