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

Opus

Description: codec for interactive speech and audio
Download: libopus.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 1Mb
Version: 1.3.1
Date: 05 Feb 2020
Author: many, see Docs/Authors, aos4 port by kas1e
Submitter: kas1e
Homepage: http://www.opus-codec.org/
Category: development/library/audio
Replaces: development/library/audio/libopus.lha
License: Other
Distribute: yes
Min OS Version: 4.0
FileID: 11170
 
Comments: 0
Snapshots: 0
Videos: 0
Downloads: 27  (Current version)
301  (Accumulated)
Votes: 1 (1/0)  (30 days/7 days)

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Opus Interactive Audio Codec

===Overview===

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.

===Technology===

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 bitrate narrowband speech to very high quality stereo music.
Supported features are:

Bitrates 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 bitrate (CBR) and variable bitrate (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.

File Version Size Date OS Dls Readme
libopusenc.lha0.2.1304kb05 Feb 20204.025¤ libopusenc - provide a high-level API for encoding .opus files
libopusfile.lha0.11368kb05 Feb 20204.028¤ libopusfile - an API for decoding and seeking within.opus files
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