| ??? 02/07/05 08:37 Read: times |
#86723 - High Freq Responding to: ???'s previous message |
Yes! The phone system! It depends on what you classify as a high frequency - if it's above 3.5khz then the phone system will attenuate it significantly. Most phone systems digitise the voice at around 8ksps and thus need to have a good filter to avoid aliasing.
ADSL uses high frequencies - but there's special equipment at both ends of the phone line to cope with this. Now, what was your question exactly?? |
| Topic | Author | Date |
| sending high frequency signal over phone | 01/01/70 00:00 | |
| sending high frequency | 01/01/70 00:00 | |
| High Freq | 01/01/70 00:00 | |
| A low-pass filter! | 01/01/70 00:00 | |
| Why oh why | 01/01/70 00:00 | |
| a possible why | 01/01/70 00:00 | |
| Unfortunately not. :-( | 01/01/70 00:00 | |
| Annoying telemarketers | 01/01/70 00:00 | |
| Special Information Tone - SIT | 01/01/70 00:00 | |
| oh no | 01/01/70 00:00 | |
| CMX850 | 01/01/70 00:00 | |
| this is what i am pondering | 01/01/70 00:00 | |
| this is what i am pondering | 01/01/70 00:00 | |
| that is called a modem | 01/01/70 00:00 | |
| im not wanting to get on the net | 01/01/70 00:00 | |
| modem and the net | 01/01/70 00:00 | |
| Modems and Video | 01/01/70 00:00 | |
| 56K | 01/01/70 00:00 | |
| Video | 01/01/70 00:00 | |
| details | 01/01/70 00:00 | |
| Yes, it *is* a modem! | 01/01/70 00:00 | |
| ok there is some confusion | 01/01/70 00:00 | |
| confusion all right ... | 01/01/70 00:00 | |
| suggested texts | 01/01/70 00:00 | |
| Confusion | 01/01/70 00:00 | |
Watching movies over the phone | 01/01/70 00:00 |