[codec] [Technical Errata Reported] RFC6716 (4853)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 02 November 2016 19:06 UTC

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Subject: [codec] [Technical Errata Reported] RFC6716 (4853)
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The following errata report has been submitted for RFC6716,
"Definition of the Opus Audio Codec".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=6716&eid=4853

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Type: Technical
Reported by: Rostislav Pehlivanov <atomnuker@gmail.com>

Section: 5.1.1

Original Text
-------------
                                    rng
                        rng = rng - --- * (fh - fl)
                                    ft

Corrected Text
--------------
                                    rng
                        rng = rng - --- * (ft - fh)
                                    ft

Notes
-----
Equation should match with the one in the range decoder (section 4.1.2), however comparing the two and the reference implementation reveals the equation in section 5.1.1 to be incorrect.

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--------------------------------------
RFC6716 (draft-ietf-codec-opus-16)
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Title               : Definition of the Opus Audio Codec
Publication Date    : September 2012
Author(s)           : JM. Valin, K. Vos, T. Terriberry
Category            : PROPOSED STANDARD
Source              : Internet Wideband Audio Codec RAI
Area                : Real-time Applications and Infrastructure
Stream              : IETF
Verifying Party     : IESG