From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 789DE413 for ; Wed, 10 Aug 2016 02:14:44 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-ua0-f174.google.com (mail-ua0-f174.google.com [209.85.217.174]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id C5454186 for ; Wed, 10 Aug 2016 02:14:43 +0000 (UTC) Received: by mail-ua0-f174.google.com with SMTP id 97so48835256uav.3 for ; Tue, 09 Aug 2016 19:14:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=6W3iPksR+jn/bsluTTL0wIs4q/EdNRfAP6qSUIMMiW8=; b=RUHJcH2/ntfnWTR9fRfG1ih3wgzzu4a9YLQVZyBtoC/xIZ0lwbmuYdqNvNS3jr/l1O rETpKjsjGyY8F4huM1dLkzrmzQMsBJX5n39ZJXIuXrNgC7UiX/iB357gftLnQD4i+Cct SPvYIxel7nZHAUCLmR2uJ7oVNOlT/sYDRNaGu2BP0TusDX8MdAcLqvV8lW9KMs7v6jU8 OuHBWXlKxR+xVMa0NgQnV/kD3kjnMEHKKsDn3EVZPWsBuJjydHuQsuIi33zKbvrb4Mck WQNWWGpyR9Vno2t1WJ67dgHZ5u0NOMIV6xZ6jPVVslTcpU3rIpeyoa6WrBf54lycyEQj QHWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=6W3iPksR+jn/bsluTTL0wIs4q/EdNRfAP6qSUIMMiW8=; b=PoIqanSHlRLacydracStWzmOTvqTePL1B1uNz4e0UycKXV48m1aD+aziXdoW96HCYq cWrDsBz1vUiSf7cqckiO5mADjbh8wT80eEY5J8LXw9HBYTfJX/knZ7YLrJxEWmUrm+ym /nv+c6bsfhTIEJmKjeku+PVreDd3+o0HXiMixXTRliCmVDLUxZsxcT/g0/tYat3HTsj4 S3UYzSTs4b2YwGqh7cWebGXstwpApNrrV8HdLu8BI2GqOm1vLXmy/TqDxN99JzZ4LZzj F7JzJaWaVahgRiXDWcFifITActNtdIxKI03h9j91dKbv1eBzm43HRYP9Ux4939+XZUho Nqgg== X-Gm-Message-State: AEkoouvF4MDsSLnHB7sYMr3750WQYo336w3phrWhc1Krd/wg9LPmvwcE9Y2z8RINkxPljS33vIfLxb5EnoTVwQ== X-Received: by 10.159.36.108 with SMTP id 99mr623037uaq.79.1470795282947; Tue, 09 Aug 2016 19:14:42 -0700 (PDT) MIME-Version: 1.0 Sender: gmaxwell@gmail.com Received: by 10.103.118.9 with HTTP; Tue, 9 Aug 2016 19:14:42 -0700 (PDT) In-Reply-To: References: From: Gregory Maxwell Date: Wed, 10 Aug 2016 02:14:42 +0000 X-Google-Sender-Auth: 98QTnvykjEBNtaRHPaDXV_pgoZk Message-ID: To: Daniel Hoffman , Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary=001a113d126860a7280539ae36ab X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] BIP Number Request: Addresses over Audio X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Aug 2016 02:14:44 -0000 --001a113d126860a7280539ae36ab Content-Type: text/plain; charset=UTF-8 On Tue, Aug 9, 2016 at 11:06 PM, Daniel Hoffman via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote: > I have updated the GitHub a lot (changed tones to be less chirpy, fixed > some smalls) and made a couple of samples (see attachment for MP3 and FLAC > of both tone tables, first 16 then 4). Is this good enough to warrant an > official BIP number? I haven't built a decoder yet, but it seems like the > encoder is working properly (looked at Audacity, seems like it is working), > and some people on reddit want to "allow for decoding experiments" > > > What suggestions do you all have for it? > With DSP hat on, your decoder for noisy/distorted channels will be 99.9% of the complexity and will completely control the design of the encoder. It's not a proposal yet without a decoder, it's just an idea. FSK modems microphone-channel (terrible multipath) is quite challenging and several other parties have tried to do bitcoin info over audio in the past without success. It's very interesting, but I think you do need to go through and get the whole thing working to really gauge viability. --001a113d126860a7280539ae36ab Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Tue, Aug 9, 2016 at 11:06 PM, Daniel Hoffman via bitcoi= n-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:
I hav= e updated the GitHub a lot (changed tones to be less chirpy, fixed some sma= lls) and made a couple of samples (see attachment for MP3 and FLAC of both = tone tables, first 16 then 4). Is this good enough to warrant an official B= IP number? I haven't built a decoder yet, but it seems like the encoder= is working properly (looked at Audacity, seems like it is working), and so= me people on reddit want to "allow for decoding experiments"

What suggestions do you all ha= ve for it?


With DSP hat on,= your decoder for noisy/distorted channels will be 99.9% of the complexity = and will completely control the design of the encoder.

It= 's not a proposal yet without a decoder, it's just an idea.=C2=A0 F= SK modems microphone-channel (terrible multipath) is quite challenging and = several other parties have tried to do bitcoin info over audio in the past = without success.

It's very interesting, but I think = you do need to go through and get the whole thing working to really gauge v= iability.
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