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Groups > comp.sys.mac.system > #52673
| From | billy@MIX.COM |
|---|---|
| Newsgroups | comp.sys.mac.system |
| Subject | Re: Security Scare ? |
| Date | 2013-11-26 03:01 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <l712v6$ba8$1@reader2.panix.com> (permalink) |
| References | (1 earlier) <Y92dnSzcbJBYsg_PnZ2dnUVZ_hudnZ2d@giganews.com> <slrnl94ef1.ifj.g.kreme@mbp55.local> <IM2dnbnHJJhh3w_PnZ2dnUVZ_s2dnZ2d@giganews.com> <slrnl9594u.ifj.g.kreme@mbp55.local> <HP2dnTW_QrsAWA7PnZ2dnUVZ_hidnZ2d@giganews.com> |
Alan Browne <alan.browne@freelunchvideotron.ca> writes:
> There's no need for a perfect wave form at the mic, just a long enough
> sample time (per bit period) to determine the tone f - and with a pretty
> wide frequency tolerance to boot.
All you need are good zero crossings. I work with this every day,
in the form of SMPTE time code. There has been a massive amount of
software written for this. Out of 80 bits per frame, 16 are used
for a sync word, and the other 64 are data. At 30 frames/second
(play speed for me), that's 240 bytes/second. Going much faster
(as in shuttling tape), that's many more bytes/sec.
Billy Y..
--
sub #'9+1 ,r0 ; convert ascii byte
add #9.+1 ,r0 ; to an integer
bcc 20$ ; not a number
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Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-23 16:59 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-23 17:16 -0500
Re: Security Scare ? Paul Sture <nospam@sture.ch> - 2013-11-24 09:34 +0100
Re: Security Scare ? Michelle Steiner <foo@bar.com> - 2013-11-24 07:23 -0700
Re: Security Scare ? Paul Sture <nospam@sture.ch> - 2013-11-24 15:40 +0100
Re: Security Scare ? Michelle Steiner <foo@bar.com> - 2013-11-24 08:39 -0700
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 16:56 +0000
Re: Security Scare ? billy@MIX.COM - 2013-11-23 22:19 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-23 20:21 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-24 04:38 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 00:52 -0500
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-24 02:09 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 16:47 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:32 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-24 17:32 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:53 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 19:19 +1300
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-24 11:56 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 17:09 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:45 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 18:26 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 13:40 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 21:15 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 21:41 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 19:19 +1300
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-25 09:02 +0000
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 23:10 +1300
Re: Security Scare ? Richard Kettlewell <rjk@greenend.org.uk> - 2013-11-25 10:24 +0000
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-26 07:39 +1300
Re: Security Scare ? Richard Kettlewell <rjk@greenend.org.uk> - 2013-11-25 20:48 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 21:01 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 20:26 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-26 07:13 +0000
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-27 13:59 +1300
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 20:23 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-26 16:28 +1300
Re: Security Scare ? Paul Sture <nospam@sture.ch> - 2013-12-01 12:23 +0100
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-24 13:00 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-24 17:39 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:51 -0500
Re: Security Scare ? billy@MIX.COM - 2013-11-24 18:38 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-24 17:10 -0500
Re: Security Scare ? Ted Lee <tmplee@mr.net> - 2013-11-24 16:24 -0600
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 21:46 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 20:26 +1300
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 21:04 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-26 16:28 +1300
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-24 13:18 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-25 01:15 +0000
Re: Security Scare ? nospam <nospam@nospam.invalid> - 2013-11-24 20:23 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 21:55 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 22:22 -0500
Re: Security Scare ? nospam <nospam@nospam.invalid> - 2013-11-24 23:34 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-25 08:54 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-25 12:19 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 21:07 -0500
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-25 23:27 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-26 07:10 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-26 02:22 -0500
Re: Security Scare ? dempson@actrix.gen.nz (David Empson) - 2013-11-26 12:45 +1300
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-27 20:17 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-12-10 01:25 -0500
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-25 16:48 -0500
Re: Security Scare ? billy@MIX.COM - 2013-11-26 03:01 +0000
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-27 19:36 -0500
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-25 23:22 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:41 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 19:11 +1300
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