FCC doing it again...

[Bill Poser]

In article <23679 at datapg.MN.ORG> sewilco at datapg.MN.ORG (Scot E Wilcoxon) writes:
>A 3KHz voice transmission requires about 6000 bits per
>second (OK, maybe 4800bps?)

6000 bps for a 3Khz bandwidth means only 1 bit resolution. 1 bit speech
is surprisingly intelligible, but the quality is very poor. The telephone
system uses 8 bits per sample, as do the cheapo ADDACS you can buy
for personal computers. This gives a theoretical dynamic range of 48 dB.
(For speech research we try to get at least 12 bits resolution - good
research quality ADDACs give a theoretical 16 bits.) So the data rate
for telephone speech is 48K bits per second.