Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
G.711
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
==Features== * 8 kHz sampling frequency * 64 kbit/s bitrate (8 kHz sampling frequency Γ 8 bits per sample) * Typical algorithmic delay is 0.125 ms, with no look-ahead delay * G.711 is a waveform [[speech coder]] * G.711 Appendix I defines a [[packet loss concealment]] (PLC) algorithm to help hide transmission losses in a packetized network * G.711 Appendix II defines a [[discontinuous transmission]] (DTX) algorithm which uses [[voice activity detection]] (VAD) and [[Comfort noise|comfort noise generation]] (CNG) to reduce bandwidth usage during silence periods * [[PSQM]] testing under ideal conditions yields [[mean opinion score]]s of 4.45 for G.711 ΞΌ-law, 4.45 for G.711 A-law{{cn|date=May 2020}} * PSQM testing under network stress yields [[mean opinion score]]s of 4.13 for G.711 ΞΌ-law, 4.11 for G.711 A-law{{cn|date=May 2020}}
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)