Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Thu, 19 Mar 2020 14:53:15 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02JLi3gD025621; Thu, 19 Mar 2020 17:44:29 -0400 Received: from outgoing-exchange-7.mit.edu (OUTGOING-EXCHANGE-7.MIT.EDU [18.9.28.58]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02JLi0JY025616 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 19 Mar 2020 17:44:01 -0400 Received: from OC11EXEDGE3.EXCHANGE.MIT.EDU (OC11EXEDGE3.EXCHANGE.MIT.EDU [18.9.3.21]) by outgoing-exchange-7.mit.edu (8.14.7/8.12.4) with ESMTP id 02JLhvF5003377 for ; Thu, 19 Mar 2020 17:43:58 -0400 Received: from oc11exhyb1.exchange.mit.edu (18.9.1.60) by OC11EXEDGE3.EXCHANGE.MIT.EDU (18.9.3.21) with Microsoft SMTP Server (TLS) id 14.3.439.0; Thu, 19 Mar 2020 17:42:35 -0400 Received: from oc11exhyb2.exchange.mit.edu (18.9.1.98) by oc11exhyb1.exchange.mit.edu (18.9.1.60) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 19 Mar 2020 17:43:58 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (104.47.57.175) by oc11exhyb2.exchange.mit.edu (18.9.1.98) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Thu, 19 Mar 2020 17:43:58 -0400 Received: from DM5PR06CA0053.namprd06.prod.outlook.com (2603:10b6:3:37::15) by BYAPR01MB5192.prod.exchangelabs.com (2603:10b6:a03:18::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2814.18; Thu, 19 Mar 2020 21:43:55 +0000 Received: from DM3NAM03FT037.eop-NAM03.prod.protection.outlook.com (2603:10b6:3:37:cafe::ac) by DM5PR06CA0053.outlook.office365.com (2603:10b6:3:37::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2835.20 via Frontend Transport; Thu, 19 Mar 2020 21:43:55 +0000 Received: from hostedbypacific.net (216.7.65.59) by DM3NAM03FT037.mail.protection.outlook.com (10.152.83.55) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2814.13 via Frontend Transport; Thu, 19 Mar 2020 21:43:53 +0000 Received: from mail-cluster-1.pacificdomains.net (localhost [127.0.0.1]) by hostedbypacific.net (Postfix) with ESMTP id 269E5AC76A for ; Thu, 19 Mar 2020 14:43:53 -0700 (PDT) Received: from hostedbypacific.net ([127.0.0.1]) by mail-cluster-1.pacificdomains.net (mail-cluster-1.pacificdomains.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id y13iTZ-p7gsb for ; Thu, 19 Mar 2020 14:43:52 -0700 (PDT) Received: from [100.64.10.219] (unknown [23.134.144.254]) by hostedbypacific.net (Postfix) with ESMTPSA id 8E564AC766 for ; Thu, 19 Mar 2020 14:43:52 -0700 (PDT) From: Brooke Clarke To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Thu, 19 Mar 2020 14:44:30 -0700 Subject: Re: [EE] Measuring speaker impedance Thread-Topic: [EE] Measuring speaker impedance Thread-Index: AdX+OMs5CDFQC48OQq+WYvFV/YwnKQ== Message-ID: <544f9bf9-b0fe-8db1-f036-c754ebfe7353@pacific.net> References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. 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