I don't know about those theories. I suspect something else. Do you remember landlines, and how responsive they were? You would say things back and fourth and the conversation just worked, even on three-way and conference calls? There was very little noticeable lag! Even in the early cellphone days, I'd often prefer using my landline. There was less lag. Cellphones felt like speakerphones where it tries to do that ca…
They also played back a part of your own voice into your own earpiece, which helps make it sound like you’re in the same place. Zoom does not (at least AFAIK), so I have no way to judge if I’m speaking at an appropriate volume.
- The headsets were comfortable and practical. I have not seen anything sold for office or even gaming use begin to approach the ergonomics. Plantronic, Logitech, none of it.
- Every headset had foldback, so even the big sound-isolating cans felt natural to speak into. I've spent several hours messing with virtual sound cards trying to make this work with Zoom and never managed it.
- The signal was so clear, and the mics were so good, that as long as you enunciated you could speak just a hair above a whisper and be reliably understood. I remember analog PSTN voice, and this was 10x better. Might have to do with less aggressive EQ.
- Full duplex, no gating. Absolutely no problem with multiple people speaking at the same time. At very busy parts of the show we might intentionally have two simultaneous interactions on the same channel. It was a bit of work to unpack in your brain, but no harder than it would have been in person.
- Obviously no noticeable latency (basic fitness for purpose - these things are for calling cues).
- There was a little bit of analog hum + background noise from each station, so when someone opened their mic you would notice, but it wasn't disruptive. When the channel was busy, this sort of substituted for body language and you'd be invited to speak at the first opportunity.
- Physical switch to open and close the mic. I know Zoom has spacebar PTT, but one button press latch on/off is also important.
It's absolutely astounding to me just how much better these systems are than their nearest alternatives 30+ years later. If I ever control a tech office, particularly with an operations component, I'll seriously consider installing one.