IETF Logo Mail Archive

Re: [codec] WG Review: Internet Wideband Audio Codec (codec)

Jean-Marc Valin <jean-marc.valin@octasic.com> Mon, 04 January 2010 22:28 UTC

Return-Path: <jean-marc.valin@octasic.com>
X-Original-To: codec@core3.amsl.com
Delivered-To: codec@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id C0DAA3A695B; Mon, 4 Jan 2010 14:28:47 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 0
X-Spam-Level:
X-Spam-Status: No, score=0 tagged_above=-999 required=5 tests=[none]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FCRKuek0f4w1; Mon, 4 Jan 2010 14:28:47 -0800 (PST)
Received: from MAILEXCH.octasic.com (mail.octasic.com [70.54.254.106]) by core3.amsl.com (Postfix) with ESMTP id EA14328C121; Mon, 4 Jan 2010 14:28:46 -0800 (PST)
Received: from [142.138.24.13] ([142.138.24.13]) by MAILEXCH.octasic.com with Microsoft SMTPSVC(6.0.3790.3959); Mon, 4 Jan 2010 17:28:45 -0500
Message-ID: <4B426BB5.3090602@octasic.com>
Date: Mon, 04 Jan 2010 17:29:09 -0500
From: Jean-Marc Valin <jean-marc.valin@octasic.com>
User-Agent: Thunderbird 2.0.0.23 (X11/20090817)
MIME-Version: 1.0
To: Brian West <brian@freeswitch.org>
References: <4b33100a.01135e0a.2ab9.ffff8e9b@mx.google.com> <3D3C75174CB95F42AD6BCC56E5555B450204C143@FIESEXC015.nsn-intra.net> <20091223171501.7BAE33A697D@core3.amsl.com> <14093.1261593597@epsilon.noi.kre.to> <14853.1261600779@epsilon.noi.kre.to> <2401.1261648036@epsilon.noi.kre.to> <4b3373d7.02135e0a.241a.fffffb62@mx.google.com> <a123a5d60912241926l6f2255e3kc15d1d21573adeb9@mail.gmail.com> <B67FB114-FDA9-4431-A2E2-6ACF344B2EA7@cisco.com> <20100104214338.GF16373@besserwisser.org> <F3C9712A-7BB6-4F88-A00A-A9C66F1C4AB3@freeswitch.org>
In-Reply-To: <F3C9712A-7BB6-4F88-A00A-A9C66F1C4AB3@freeswitch.org>
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7bit
X-OriginalArrivalTime: 04 Jan 2010 22:28:45.0580 (UTC) FILETIME=[4712CCC0:01CA8D8D]
Cc: ietf@ietf.org, kre@munnari.oz.au, codec@ietf.org, Patrik Fältström <paf@cisco.com>, iesg@ietf.org, Mans Nilsson <mansaxel@besserwisser.org>, Phillip Hallam-Baker <hallam@gmail.com>
Subject: Re: [codec] WG Review: Internet Wideband Audio Codec (codec)
X-BeenThere: codec@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: "Should the IETF standardize wideband Internet codec\(s\)? " <codec.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/codec>, <mailto:codec-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/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: Mon, 04 Jan 2010 22:28:47 -0000

Brian West wrote:
> I think CELT and SILK are both great codecs.. I was under the impression
> that SILK ran at 32kHz and did internal resampling but that doesn't
> appear to be the case.  Either way we have six sample rates to pick from
> between the two codecs giving you bandwidth vs quality options that
> really do fit most needs in my opinion.  8,12,16,24,32 and 48kHz are
> some great choices and we support all 6 native rates in FreeSIWTCH now.
> 
> What other codecs did I miss that were submitted?  We have BV16 and BV32
> in FreeSWITCH now too.

The one you misses is SPIRIT's IP-MR codec. As you say, with the four
codecs proposed so far we can cover a wide range of applications. There's a
lot of potential for having a great codec come out of this.

	Jean-Marc

v2.23.0 | Report a Bug | By Email