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« HD or HFIt's official! »
This is a sub-selection from 12 KBs?


HDVoiceNews

@cox.net
reply to wmcbrine

Re: 12 KBs?

It's more than the bit rate; it's the sampling rate.

HD voice samples and delivers sound at 7 kHz and higher. A stock PSTN analog phone call samples/delivers sound at about 3 kHz, cutting off a lot of the upper and a bit of the lower range of sound you hear in "normal" speech.

G.722 is the baseline standard for HD voice for broadband, while AMR-WB has become the standard on mobile phones.