That's an absurd bit rate for humans, especially talking about voice. 24-bit samples is ridiculous overkill. That's a huge dynamic range that's completely unne

That's an absurd bit rate for humans, especially talking about voice. 24-bit samples is ridiculous overkill. That's a huge dynamic range that's completely unnecessary. At 192KHz you'd be able to capture 96KHz signals, far, FAR outside the range of human hearing. Human hearing peaks at 22KHz so you only need a sample rate of 44KHz to capture the total range of human hearing. For human voice you don't really need better than 16-bit samples at 12KHz or so. That's for great quality voice. The only reason audio mastering is done at huge sample sizes and sampling frequencies is to prevent aliasing during mixing and to preserve higher frequency harmonics. There's absolutely no need for such rates delivering to human beings. Also higher fidelity audio sampling is available for phone calls. The issue is more political than technical. Cellular carriers don't like to negotiate higher quality calls between one another so inter-carrier calls tend to fall back on the lowest common denominator AMR-NB codec. Intra-carrier calls don't even reliably pick AMR-WB let alone EVS available with VoLTE.