[codec] [Errata Verified] RFC6716 (4853)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 02 November 2016 20:14 UTC

Return-Path: <wwwrun@rfc-editor.org>
X-Original-To: codec@ietfa.amsl.com
Delivered-To: codec@ietfa.amsl.com
Received: from localhost (localhost []) by ietfa.amsl.com (Postfix) with ESMTP id 40B4E1298C3; Wed, 2 Nov 2016 13:14:41 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -105.699
X-Spam-Status: No, score=-105.699 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-1.497, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([]) by localhost (ietfa.amsl.com []) (amavisd-new, port 10024) with ESMTP id LfgQ4f2r0l48; Wed, 2 Nov 2016 13:14:40 -0700 (PDT)
Received: from rfc-editor.org (rfc-editor.org []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0977412989E; Wed, 2 Nov 2016 13:14:40 -0700 (PDT)
Received: by rfc-editor.org (Postfix, from userid 30) id F2E5EB80097; Wed, 2 Nov 2016 13:14:39 -0700 (PDT)
To: atomnuker@gmail.com, jmvalin@jmvalin.ca, koenvos74@gmail.com, tterriberry@mozilla.com
X-PHP-Originating-Script: 30:errata_mail_lib.php
From: RFC Errata System <rfc-editor@rfc-editor.org>
Message-Id: <20161102201439.F2E5EB80097@rfc-editor.org>
Date: Wed, 2 Nov 2016 13:14:39 -0700 (PDT)
Archived-At: <https://mailarchive.ietf.org/arch/msg/codec/GKY2ngwvcLepK18CmGrl_Ysa-DQ>
Cc: codec@ietf.org, iesg@ietf.org, rfc-editor@rfc-editor.org
Subject: [codec] [Errata Verified] RFC6716 (4853)
X-BeenThere: codec@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Codec WG <codec.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/codec>, <mailto:codec-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/codec/>
List-Post: <mailto:codec@ietf.org>
List-Help: <mailto:codec-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/codec>, <mailto:codec-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 02 Nov 2016 20:14:41 -0000

The following errata report has been verified for RFC6716,
"Definition of the Opus Audio Codec". 

You may review the report below and at:

Status: Verified
Type: Technical

Reported by: Rostislav Pehlivanov <atomnuker@gmail.com>
Date Reported: 2016-11-02
Verified by: Ben Campbell (IESG)

Section: 5.1.1

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

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

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.

RFC6716 (draft-ietf-codec-opus-16)
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