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[195.171.43.25]) by mx.google.com with ESMTP id z1si13285579wjx.124.2014.03.18.16.05.57 for ; Tue, 18 Mar 2014 16:05:57 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WQ2iC-0002Vm-Pw for rs_out_1@blacksheep.org; Tue, 18 Mar 2014 22:42:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WQ2iC-0002Vd-AF for rsgb_lf_group@blacksheep.org; Tue, 18 Mar 2014 22:42:20 +0000 Received: from lethe.lipkowski.org ([178.32.151.135] helo=paranoid.lipkowski.org) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82) (envelope-from ) id 1WQ2iA-0005JA-LC for rsgb_lf_group@blacksheep.org; Tue, 18 Mar 2014 22:42:19 +0000 Received: from paranoid.lipkowski.org (localhost [127.0.0.1]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id s2IMgFId001033 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 18 Mar 2014 23:42:15 +0100 Received: from localhost (sq5bpf@localhost) by paranoid.lipkowski.org (8.13.7/8.13.6/Submit) with ESMTP id s2IMgFsE001030 for ; Tue, 18 Mar 2014 23:42:15 +0100 X-Authentication-Warning: paranoid.lipkowski.org: sq5bpf owned process doing -bs Date: Tue, 18 Mar 2014 23:42:15 +0100 (CET) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: <5328BF0B.6000308@iup.uni-heidelberg.de> Message-ID: References: <048001cf3c01$e513fd00$af3bf700$@comcast.net> <531DC2A6.4080606@iup.uni-heidelberg.de> <5328BF0B.6000308@iup.uni-heidelberg.de> MIME-Version: 1.0 X-Spam-Score-sq5bpf: -2.601 () BAYES_00,SPF_HELO_PASS,SPF_PASS X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 X-HELO-Warning: Remote host 178.32.151.135 (lethe.lipkowski.org) used invalid HELO/EHLO paranoid.lipkowski.org - verification failed X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Stefan, Maybe use a linux platform? Like a raspberry pi, or an old HP thinclient (you can get them very cheap from auction sites). Under linux you can connect any sound card that satisfies your requirements for S/N, sampling rate etc (probably the internal sound card would be ok for the simple stuff, but an external usb card would be better). [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record X-Scan-Signature: 5c335215f1b3de26d890ee84d49616ce Subject: Re: LF: Bluetooth instead? Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Stefan, Maybe use a linux platform? Like a raspberry pi, or an old HP thinclient (you can get them very cheap from auction sites). Under linux you can connect any sound card that satisfies your requirements for S/N, sampling rate etc (probably the internal sound card would be ok for the simple stuff, but an external usb card would be better). This can be connected via wifi. The simplest way to stream would be probably to have a pulseaudio server running on the thin client (pulseaudio comes stock with most linux distributions, so probably you wouldn't event have to compile anything from scratch). You can stream using tcp or rtp (and some other protocols too). On the client side you would also need pulseaudio, and the input should appear as a local sound card to most applications. Pulseaudio has been ported to various linux/unix (macos x included)/windows systems, so software choice would not be a problem. You could also stream via the internet (tcp tunneled in ssl or ssh, or rtp via vpn would be my choice), so that you don't need to set up long range wifi links. This is a bit more complex than using a bluetooth headset, and requires more power, but is still much simpler than building all of the hardware yourself. The thin client can have much more logic than a simple audio server, it can generate spectrograms by itself etc. This was probably proposed by others, but i didn't see pulseaudio mentioned anywhere. VY 73 Jacek / SQ5BPF