[From nobody Sat Aug 16 21:13:45 2008 Return-Path: <support-bounces@lists.openmoko.org> Received: from mail.openmoko.org ([unix socket]) by mail.openmoko.org (Cyrus v2.1.18-IPv6-Debian-2.1.18-5.1) with LMTP; Tue, 05 Aug 2008 11:00:07 +0000 X-Sieve: CMU Sieve 2.2 Return-path: <support-bounces@lists.openmoko.org> Received: from sita.openmoko.org ([88.198.124.203]) by mail.openmoko.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from <support-bounces@lists.openmoko.org>) id 1KQKGt-00021E-BW; Tue, 05 Aug 2008 11:00:07 +0000 Received: from localhost ([127.0.0.1] helo=sita.openmoko.org) by sita.openmoko.org with esmtp (Exim 4.63) (envelope-from <support-bounces@lists.openmoko.org>) id 1KQKGe-0001wl-GG; Tue, 05 Aug 2008 12:59:52 +0200 Received: from mail.openmoko.org ([88.198.124.205]) by sita.openmoko.org with esmtp (Exim 4.63) (envelope-from <joerg@openmoko.org>) id 1KQKGU-0001vm-9V for support@lists.openmoko.org; Tue, 05 Aug 2008 12:59:50 +0200 Received: from 118-166-66-221.dynamic.hinet.net ([118.166.66.221] helo=halley) by mail.openmoko.org with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from <joerg@openmoko.org>) id 1KQKGR-0001tz-3U; Tue, 05 Aug 2008 10:59:42 +0000 From: Joerg Reisenweber <joerg@openmoko.org> To: support@lists.openmoko.org Date: Tue, 5 Aug 2008 18:56:48 +0800 User-Agent: KMail/1.9.6 (enterprise 20070904.708012) References: <BAY110-W43DE694BBBFFCC609C286DD7B0@phx.gbl> <200808051756.04355.joerg@openmoko.org> <30e395780808050322x76ad5d7dgf180adc1a646018a@mail.gmail.com> In-Reply-To: <30e395780808050322x76ad5d7dgf180adc1a646018a@mail.gmail.com> MIME-Version: 1.0 Message-Id: <200808051856.49451.joerg@openmoko.org> X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on sita.openmoko.org X-Spam-Level: X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.1.7-deb Subject: Re: Buzzing sound Cc: Jeffrey Ratcliffe <jeffrey.ratcliffe@gmail.com> X-BeenThere: support@lists.openmoko.org X-Mailman-Version: 2.1.9 Precedence: list Reply-To: Support for Openmoko Device Owners <support@lists.openmoko.org> List-Id: Support for Openmoko Device Owners <support.lists.openmoko.org> List-Unsubscribe: <https://lists.openmoko.org/mailman/listinfo/support>, <mailto:support-request@lists.openmoko.org?subject=unsubscribe> List-Archive: <http://lists.openmoko.org/pipermail/support> List-Post: <mailto:support@lists.openmoko.org> List-Help: <mailto:support-request@lists.openmoko.org?subject=help> List-Subscribe: <https://lists.openmoko.org/mailman/listinfo/support>, <mailto:support-request@lists.openmoko.org?subject=subscribe> Content-Type: multipart/mixed; boundary="===============1040342347==" Mime-version: 1.0 Sender: support-bounces@lists.openmoko.org Errors-To: support-bounces@lists.openmoko.org X-UID: 18386 X-Length: 5867 --===============1040342347== Content-Type: multipart/signed; boundary="nextPart2230288.CU9AD1TnBU"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit --nextPart2230288.CU9AD1TnBU Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Am Di 5. August 2008 schrieb Jeffrey Ratcliffe: > 2008/8/5 Joerg Reisenweber <joerg@openmoko.org>: > > Only thing you may try for now is changing GSM-provider, as it seems to= be > > very clear the issue is to be found on some GSM-networks, and not (or=20 less) > > on some others. Generally the 1800/1900 networks seem to be more likely= to > > cause this problem than the 850/900 networks. For Germany I got reports= f > > noise only for E+ network (and resellers) >=20 > My experience on Blau (E+) is that I hear the caller excellently - but > the caller complains that buzzing is very bad. >=20 > > Hard to tell. We don't get sufficient number of reports, and due to nat= ure=20 of > > reports nearly all are problem-reports, people without problems usually= =20 don't > > post a report. >=20 > I suggest, therefore, a wiki page where users are encouraged to > document the line quality at both ends (good or bad) against their > provider. Local has never been a related issue. It's always far end that "get's the=20 buzz". Quite basic and important to understand. We have *two* distinct=20 audio-transfers with opposite directions. Buzz is on=20 =46R->(mixer,GSM)->far_end only. If you hear local buzz, your mixer/gsm-sidetone settings are somewhat=20 incorrect. I'd appreciate such a wikipage and the reports there very much. Additional needed info: GSM-band (we don't know all providers!), signal-lev= el=20 GSM In fact that's what I did in Germany, collect reports from users about nois= e.=20 I even had them call my answering machine so I actually collected some real= =20 audio samples as *.wav. Result: in Germany it's virtually only E+ that's=20 causing the noise. Anyway still this makes no database for a guess on percentage of users that= =20 suffer from complaints of their callees about buzz-noise. cheers jOERG --nextPart2230288.CU9AD1TnBU Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4-svn0 (GNU/Linux) iD8DBQBImDHx7Xtwhpk1UgwRAiLKAKCEUj/6TrB+gTPZLNq1MTbzg/XUHwCeNLLC nepwbmRRqOP458dq4hnudTA= =M4Ab -----END PGP SIGNATURE----- --nextPart2230288.CU9AD1TnBU-- --===============1040342347== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support --===============1040342347==-- ]