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Comment by zamadatix | Hacker News Reader

"The phone network"? As in the usually 8 kHz to 16 kHz quality call typically encoding at ~a quarter the rate of dial-up?

Of course that sounds like a tin can either way, it's coming in encoded with the quality of a tin can! People here are talking about modern VoIP calls (Teams/Slack/Discord/Zoom/etc) which have a snowball's chance in hell of sounding decent in the first place. HSP/HFP will often crank that right back down to traditional phone network quality again. You also lose stereo, which isn't so bad if the only thing you're doing is having a 1:1 call but kind of sucks for a background group call.

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The "phone network" nowadays offer high quality sound. Things improved drastically with VoLTE and other technologies which allows much more bandwidth for calls than the old networks could support.

EVS is typically not horrendous, I just wouldn't describe it as the usual VoLTE quality yet. That's still most commonly AMR-WB at 16 kHz, though it'd depend largely on who you're dialing from what where I suppose. One person who dials local cell users on a 5G network will probably tend to get EVS, one who doesn't probably won't.

I mean: I, for one, was definitely talking about telephone calls. :)

But now that you mention it: Yeah, the state of common VoIP (Teams/Slack/Zoom/whatever) is also usually not very good. It's like there's some huge bandwidth crunch here in 2026 that is driven by the strenuous demands of VoIP, except: There isn't.

When I was doing some live streaming with others in a studio a couple of years ago, we worked with some of that. It never sounded very good. (It doesn't sound very good when the big-time acts at CBS or NPR or Fox News do it, either.)

But! When we occasionally had remote co-hosts who had enough technical competence to make it work properly on their end, we were able to use SonoBus[1]. That audio was positively pristine, like they were sitting unseen in the same room as everyone else.

[1]: https://www.sonobus.net/

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