From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI,NICE_REPLY_A,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 15402 invoked from network); 12 Jul 2020 16:11:14 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 12 Jul 2020 16:11:14 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 4E18794EE1; Mon, 13 Jul 2020 02:11:09 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 980D594EBC; Mon, 13 Jul 2020 02:10:06 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="key not found in DNS" (0-bit key; unprotected) header.d=bitsavers.org header.i=aek@bitsavers.org header.b="ij/lwDJr"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 3123294EBC; Mon, 13 Jul 2020 02:10:04 +1000 (AEST) Received: from ezwind.net (smtp.ezwind.net [71.91.242.96]) by minnie.tuhs.org (Postfix) with ESMTPS id 7D99194585 for ; Mon, 13 Jul 2020 02:10:03 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/relaxed; d=bitsavers.org; s=MDaemon; t=1594570202; x=1595175002; i=aek@bitsavers.org; q=dns/txt; h=Subject:To:References:From: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To:Content-Type: Content-Language:Content-Transfer-Encoding; bh=mPNW1netqa1vgPDCr 3Qqkc1GTVexLpbSNXGYa4X9a+Y=; b=ij/lwDJrLC0RXYsfQMSew8B3emrXzdEZO t/aFaFd4cxcMe06ZFaX46zWtsybm87MHBt6COhW2x8H1V3i6A2bSP3LKapfT8sc2 rARAEr6c0INL/p1qXlNCASVYgaGg4SnEhx35kQpZK9wzfrZiRBw2F2CE8Np9n1Q5 5A66qImjBQ= Received: from Mac-Pro.local by ezwind.net (MDaemon PRO v16.0.4) with ESMTPA id 32-md50000063479.msg for ; Sun, 12 Jul 2020 11:10:00 -0500 X-MDRemoteIP: 75.36.239.218 X-MDHelo: Mac-Pro.local X-MDArrival-Date: Sun, 12 Jul 2020 11:10:00 -0500 X-Authenticated-Sender: aek@bitsavers.org X-Return-Path: prvs=146205adc2=aek@bitsavers.org X-Envelope-From: aek@bitsavers.org X-MDaemon-Deliver-To: tuhs@minnie.tuhs.org To: tuhs@minnie.tuhs.org References: <20200711203020.GA1884@minnie.tuhs.org> <202007120222.06C2MtdJ140032@tahoe.cs.Dartmouth.EDU> <738ab925-586b-4921-b891-a4ec20348d4c@localhost> <20200712145822.GA72854@fuz.su> From: Al Kossow Message-ID: <8cf76d2d-c598-9c5c-3bcc-8b3e0518e313@bitsavers.org> Date: Sun, 12 Jul 2020 09:09:56 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200712145822.GA72854@fuz.su> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [TUHS] Monitoring by loudspeaker X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" On 7/12/20 7:58 AM, Robert Clausecker wrote: > That's how you know that the machine is stuck in an endless loop: if it > was doing something useful, the values would change every iteration and > you would get white noise again. Computers are capable of generating PWM speech with a single bit output https://www.youtube.com/watch?v=IIejqWEV_8w is an example on the Apple II or multi-voice music using multiple bits https://www.youtube.com/watch?v=dTaVffknxEY the sound is not 'white noise' which implies totally random output any loop in the code will produce a unique sound when it is running