From owner-freebsd-multimedia@FreeBSD.ORG Sun Nov 25 19:35:56 2012 Return-Path: Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 57D92FA4 for ; Sun, 25 Nov 2012 19:35:56 +0000 (UTC) (envelope-from ralf.mardorf@rocketmail.com) Received: from nm12-vm0.bullet.mail.ukl.yahoo.com (nm12-vm0.bullet.mail.ukl.yahoo.com [217.146.183.246]) by mx1.freebsd.org (Postfix) with ESMTP id 9A6DE8FC14 for ; Sun, 25 Nov 2012 19:35:54 +0000 (UTC) Received: from [217.146.183.183] by nm12.bullet.mail.ukl.yahoo.com with NNFMP; 25 Nov 2012 19:35:52 -0000 Received: from [217.146.182.186] by tm14.bullet.mail.ukl.yahoo.com with NNFMP; 25 Nov 2012 19:35:52 -0000 Received: from [127.0.0.1] by smtp152.mail.ukl.yahoo.com with NNFMP; 25 Nov 2012 19:35:52 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rocketmail.com; s=s1024; t=1353872152; bh=zoMbYVU1OQxYBsSOI8LgIULLvECq0N3YNBLk0zpDZXQ=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:Subject:From:To:Date:In-Reply-To:References:Content-Type:X-Mailer:Mime-Version:Content-Transfer-Encoding; b=N6sKEmxgDCLyprjIzPde1US8SAHY7x0u2rmNdzB+7/8GsdAW0Zrfd3HziGJp2BCVvgAvyLKd8LQ1mtVS1jOvUpoA0f2y3h4Bq6qQxLbq5RPoS6cRPr9aSdgx09cXrl8OpDFTg4GhVLZS8H3BxvdHu+TjpptPaC3Pu/vJCU4SMbU= X-Yahoo-Newman-Id: 780266.28708.bm@smtp152.mail.ukl.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: edhCOz8VM1mb_5eN5uF6RIMAFI8B6IUd3X9wohlr0TMwNWB bD_F4IQ4Jj9JvrzObbLhtk03oK7S9B1gITGcmv76JMMTIlpcAOlBDOdbO0rj JRgEfxLY9kFIr8ZxuQIUdboF031cxtq67cYmB0yLto5BklVpENKGndg4L1KR 5FIenpne4s9vNRCcVtH0l1wHVtLjnj7J3j9yxrCRDIQ_IUkRA3WIDKW2MwBA DGTPN4FxTOHPgD3EnfQIeasb7fmzisTM4VZ.xPzMawVHdNc8UReMxwPRVhFv ewdPnOR8nwf21oM2xVbKKASghs3PVoSIk2fJXhRgXgsM0Kwb4xjC97HXbfo8 Nh4bg5qYaTNajbETOOyYBemYvK9qrfjRdFJrjaajNeTk9ICfq_G8fy8D7CzF FaWz6QNmg9kBk6AbP0gm2YrCRzHfFu1ox7UNQDUI- X-Yahoo-SMTP: BeMCPs2swBABTJ3kAeEiC_hE0mz8jRexLddJfD8pI2j32fOacjBmXg-- Received: from [85.182.22.141] (ralf.mardorf@85.182.22.141 with login) by smtp152.mail.ukl.yahoo.com with SMTP; 25 Nov 2012 11:35:52 -0800 PST Message-ID: <1353872153.2508.186.camel@q> Subject: Re: MIDIPP - music production with FreeBSD?! From: Ralf Mardorf To: freebsd-multimedia@freebsd.org Date: Sun, 25 Nov 2012 20:35:53 +0100 In-Reply-To: <201211252008.06595.hselasky@c2i.net> References: <201211241707.28230.hselasky@c2i.net> <201211241951.qAOJpJHe008355@triton8.kn-bremen.de> <201211252008.06595.hselasky@c2i.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.6.0-0ubuntu3 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Nov 2012 19:35:56 -0000 On Sun, 2012-11-25 at 20:08 +0100, Hans Petter Selasky wrote: > I wrote this simple tool to be able to handle more than stero. The device I've > got provides 7+1 channels playback and recording. I didn't check if jack > supports that. Also there are some problems with audio delay and such when > using jack. Probably not configured properly. And I needed to have control on > sample rate drifting with regard to input and output. VirtuallOSS is using > cuse4bsd to provide a non-resampled audio device. This is the same jack as for Linux? If so, jack doesn't add latency and can handle more than enough ports. Latency is from the backend/hardware and the clients have to provide the ports. Jack doesn't do resampling. It's impossible to misconfigure jack in a way, that it will add latency. Much more, on Linux the -Xalsarawmidi switch for jack2, aka jackdmp (not for jack1, aka jackd) does enable zero MIDI jitter, when using good MIDI devices, IOW PCI and PCIe devices, USB always will produce MIDI jitter. Regards, Ralf