From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8694DC49361 for ; Fri, 18 Jun 2021 16:45:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B3BB613E9 for ; Fri, 18 Jun 2021 16:45:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235968AbhFRQsE (ORCPT ); Fri, 18 Jun 2021 12:48:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:50164 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235740AbhFRQsD (ORCPT ); Fri, 18 Jun 2021 12:48:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E4FB96127C; Fri, 18 Jun 2021 16:45:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624034753; bh=ZTtwHmqh0rQ3M2ho9c60I0q0eOzXiN2NKnpGl1n9jAs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=R/HYr50FfFMgL8AT6+8hLyRxD/ZSJ4S2xb12SBGX3bFOa3uWO/saYDhlnVh86HZZi OPDTpRuYv/2ZQouGk4fRnlCJgkL18zxi+4aIaD64YAzf49WelDhz2fEAbY0JRP/RbJ VR1FI2PTAT6TbjogpFjK/WPi7QxmCYgwALtjhSbyhztW+Tjo7JUPS5dSdcGLjDT5A1 w5OHX7Fe1IquhO1WW9ds+tBjdvFYugD7ejgElqSQwxbbOUSkwwTVmZzxfTyxYEvOV8 s/Hgm/YM5MQ5/pN9z0oud2vd0ZPIKafP7cIaWCVfDbFVRZCpOjBzgT0HD4Wi/v2DQ0 4WeLullrbJTJg== Date: Fri, 18 Jun 2021 18:45:45 +0200 From: Mauro Carvalho Chehab To: Mark Brown Cc: Steven Rostedt , Geert Uytterhoeven , James Bottomley , Laurent Pinchart , Shuah Khan , Konstantin Ryabitsev , "Enrico Weigelt, metux IT consult" , David Hildenbrand , Greg KH , Christoph Lameter , Theodore Ts'o , Jiri Kosina , ksummit@lists.linux.dev, Linux Kernel Mailing List , linux-block@vger.kernel.org, Linux FS Devel , Linux MM , netdev , Linux-Arch , Linux API Subject: Re: Maintainers / Kernel Summit 2021 planning kick-off Message-ID: <20210618184545.33ea3d47@coco.lan> In-Reply-To: <20210618155829.GD4920@sirena.org.uk> References: <5038827c-463f-232d-4dec-da56c71089bd@metux.net> <20210610182318.jrxe3avfhkqq7xqn@nitro.local> <20210610152633.7e4a7304@oasis.local.home> <37e8d1a5-7c32-8e77-bb05-f851c87a1004@linuxfoundation.org> <20210618103214.0df292ec@oasis.local.home> <20210618155829.GD4920@sirena.org.uk> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org Em Fri, 18 Jun 2021 16:58:29 +0100 Mark Brown escreveu: > On Fri, Jun 18, 2021 at 10:32:14AM -0400, Steven Rostedt wrote: > > On Fri, 18 Jun 2021 16:28:02 +0200 > > Geert Uytterhoeven wrote: > > > > What about letting people use the personal mic they're already > > > carrying, i.e. a phone? > > > Interesting idea. > > > I wonder how well that would work in practice. Are all phones good > > enough to prevent echo? > > Unless you get the latency for the WebRTC<->in room speaker down lower > than I'd expect it to be I'd expect echo cancellation to have fun, > though beam forming might reject a lot of in room noise including that - > higher end modern phones are astonishingly good at this stuff. I'd not > trust it to work reliably for all attendees though, it's the sort of > thing where you'll get lots of per device variation. The local audience should be listening to the in-room audio, in order to avoid echo. Also, all local mics should be muted, if someone is speaking from a remote location. Yet, echo is unavoidable if a remote participant is speaking while listening to the audio without headphones. If this ever happens, I guess the moderator should cut the remote audio and ask the remote participant to lower their speakers or use a headphone. Thanks, Mauro