OS4 DepotLogo by Alkaron 
(anonymous IP:,1426) 

   Bug tracker
   Locale browser


   o Audio (330)
   o Datatype (47)
   o Demo (188)
   o Development (547)
   o Document (21)
   o Driver (89)
   o Emulation (142)
   o Game (886)
   o Graphics (471)
   o Library (102)
   o Network (209)
   o Office (56)
   o Utility (828)
   o Video (62)

Total files: 3978

Full index file
Recent index file



Support the site

 Readme for:  Development » Library » Audio » libopus.lha


Description: Audio codec for speech and music
Download: libopus.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 4Mb
Version: 1.2.1
Date: 18 Nov 2017
Author: Xiph.org Foundation
Submitter: Michael Trebilcock
Homepage: http://www.opus-codec.org/downloads/
Category: development/library/audio
Replaces: development/library/audio/libopus.lha
License: Other
Distribute: yes
Min OS Version: 4.0
FileID: 10390
Comments: 0
Snapshots: 0
Videos: 0
Downloads: 73  (Current version)
272  (Accumulated)
Votes: 0 (0/0)  (30 days/7 days)

Show comments Show snapshots Show videos Show content Show crashlogs Replace file 
Opus Interactive Audio Codec


Opus is a totally open, royalty-free, highly versatile audio codec. Opus is
unmatched for interactive speech and music transmission over the Internet, but
is also intended for storage and streaming applications. It is standardized by
the Internet Engineering Task Force (IETF) as RFC 6716 which incorporated
technology from Skype's SILK codec and Xiph.Org's CELT codec.


Opus can handle a wide range of audio applications, including Voice over IP,
videoconferencing, in-game chat, and even remote live music performances. It can
scale from low bit-rate narrowband speech to very high quality stereo music.
Supported features are:

Bit-rates from 6 kb/s to 510 kb/s
Sampling rates from 8 kHz (narrowband) to 48 kHz (fullband)
Frame sizes from 2.5 ms to 60 ms
Support for both constant bit-rate (CBR) and variable bit-rate (VBR)
Audio bandwidth from narrowband to fullband
Support for speech and music
Support for mono and stereo
Support for up to 255 channels (multistream frames)
Dynamically adjustable bitrate, audio bandwidth, and frame size
Good loss robustness and packet loss concealment (PLC)
Floating point and fixed-point implementation

You can read the full specification, including the reference implementation, in
RFC 6716. An up-to-date implementation of the Opus standard is also available
from the downloads page.

Copyright © 2004-2020 by Björn Hagström All Rights Reserved