Add link to CasparCG too.

[homepage.git] / blog / index.rss

diff --git a/blog/index.rss b/blog/index.rss
index 317126122a550fc3e0238e20f215bae1e5cb5c1e..cfcefdc156c1fd31a645adf2f430596b6da71039 100644 (file)
--- a/blog/index.rss
+++ b/blog/index.rss
@@ -6,6 +6,117 @@
                 <link>http://people.skolelinux.org/pere/blog/</link>
                 <atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
        
                 <link>http://people.skolelinux.org/pere/blog/</link>
                 <atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
        

+       <item>
+               <title>Time for an official MIME type for patches?</title>
+               <link>http://people.skolelinux.org/pere/blog/Time_for_an_official_MIME_type_for_patches_.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Time_for_an_official_MIME_type_for_patches_.html</guid>
+                <pubDate>Thu, 1 Nov 2018 08:15:00 +0100</pubDate>
+               <description>&lt;p&gt;As part of my involvement in
+&lt;a href=&quot;https://gitlab.com/OsloMet-ABI/nikita-noark5-core&quot;&gt;the Nikita
+archive API project&lt;/a&gt;, I&#39;ve been importing a fairly large lump of
+emails into a test instance of the archive to see how well this would
+go.  I picked a subset of &lt;a href=&quot;https://notmuchmail.org/&quot;&gt;my
+notmuch email database&lt;/a&gt;, all public emails sent to me via
+@lists.debian.org, giving me a set of around 216 000 emails to import.
+In the process, I had a look at the various attachments included in
+these emails, to figure out what to do with attachments, and noticed
+that one of the most common attachment formats do not have
+&lt;a href=&quot;https://www.iana.org/assignments/media-types/media-types.xhtml&quot;&gt;an
+official MIME type&lt;/a&gt; registered with IANA/IETF.  The output from
+diff, ie the input for patch, is on the top 10 list of formats
+included in these emails.  At the moment people seem to use either
+text/x-patch or text/x-diff, but neither is officially registered.  It
+would be better if one official MIME type were registered and used
+everywhere.&lt;/p&gt;
+
+&lt;p&gt;To try to get one official MIME type for these files, I&#39;ve brought
+up the topic on
+&lt;a href=&quot;https://www.ietf.org/mailman/listinfo/media-types&quot;&gt;the
+media-types mailing list&lt;/a&gt;.  If you are interested in discussion
+which MIME type to use as the official for patch files, or involved in
+making software using a MIME type for patches, perhaps you would like
+to join the discussion?&lt;/p&gt;
+
+&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
+</description>
+       </item>
+       
+       <item>
+               <title>Measuring the speaker frequency response using the AUDMES free software GUI - nice free software</title>
+               <link>http://people.skolelinux.org/pere/blog/Measuring_the_speaker_frequency_response_using_the_AUDMES_free_software_GUI___nice_free_software.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Measuring_the_speaker_frequency_response_using_the_AUDMES_free_software_GUI___nice_free_software.html</guid>
+                <pubDate>Mon, 22 Oct 2018 08:40:00 +0200</pubDate>
+               <description>&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2018-10-22-audmes-measure-speakers.png&quot; align=&quot;right&quot; width=&quot;40%&quot;/&gt;&lt;/p&gt;
+
+&lt;p&gt;My current home stereo is a patchwork of various pieces I got on
+flee markeds over the years.  It is amazing what kind of equipment
+show up there.  I&#39;ve been wondering for a while if it was possible to
+measure how well this equipment is working together, and decided to
+see how far I could get using free software.  After trawling the web I
+came across an article from DIY Audio and Video on
+&lt;a href=&quot;https://www.diyaudioandvideo.com/Tutorial/SpeakerResponseTesting/&quot;&gt;Speaker
+Testing and Analysis&lt;/a&gt; describing how to test speakers, and it listing
+several software options, among them
+&lt;a href=&quot;https://sourceforge.net/projects/audmes/&quot;&gt;AUDio MEasurement
+System (AUDMES)&lt;/a&gt;.  It is the only free software system I could find
+focusing on measuring speakers and audio frequency response.  In the
+process I also found an interesting article from NOVO on
+&lt;a href=&quot;http://novo.press/understanding-speaker-specifications-and-frequency-response/&quot;&gt;Understanding
+Speaker Specifications and Frequency Response&lt;/a&gt; and an article from
+ecoustics on
+&lt;a href=&quot;https://www.ecoustics.com/articles/understanding-speaker-frequency-response/&quot;&gt;Understanding
+Speaker Frequency Response&lt;/a&gt;, with a lot of information on what to
+look for and how to interpret the graphs.  Armed with this knowledge,
+I set out to measure the state of my speakers.&lt;/p&gt;
+
+&lt;p&gt;The first hurdle was that AUDMES hadn&#39;t seen a commit for 10 years
+and did not build with current compilers and libraries.  I got in
+touch with its author, who no longer was spending time on the program
+but gave me write access to the subversion repository on Sourceforge.
+The end result is that now the code build on Linux and is capable of
+saving and loading the collected frequency response data in CSV
+format.  The application is quite nice and flexible, and I was able to
+select the input and output audio interfaces independently.  This made
+it possible to use a USB mixer as the input source, while sending
+output via my laptop headphone connection.  I lacked the hardware and
+cabling to figure out a different way to get independent cabling to
+speakers and microphone.&lt;/p&gt;
+
+&lt;p&gt;Using this setup I could see how a large range of high frequencies
+apparently were not making it out of my speakers.  The picture show
+the frequency response measurement of one of the speakers.  Note the
+frequency lines seem to be slightly misaligned, compared to the CSV
+output from the program.  I can not hear several of these are high
+frequencies, according to measurement from
+&lt;a href=&quot;http://freehearingtestsoftware.com&quot;&gt;Free Hearing Test
+Software&lt;/a&gt;, an freeware system to measure your hearing (still
+looking for a free software alternative), so I do not know if they are
+coming out out the speakers.  I thus do not quite know how to figure
+out if the missing frequencies is a problem with the microphone, the
+amplifier or the speakers, but I managed to rule out the audio card in my
+PC by measuring my Bose noise canceling headset using its own
+microphone.  This setup was able to see the high frequency tones, so
+the problem with my stereo had to be in the amplifier or speakers.&lt;/p&gt;
+
+&lt;p&gt;Anyway, to try to role out one factor I ended up picking up a new
+set of speakers at a flee marked, and these work a lot better than the
+old speakers, so I guess the microphone and amplifier is OK.  If you
+need to measure your own speakers, check out AUDMES.  If more people
+get involved, perhaps the project could become good enough to
+&lt;a href=&quot;https://bugs.debian.org/910876&quot;&gt;include in Debian&lt;/a&gt;?  And if
+you know of some other free software to measure speakers and amplifier
+performance, please let me know.  I am aware of the freeware option
+&lt;a href=&quot;https://www.roomeqwizard.com/&quot;&gt;REW&lt;/a&gt;, but I want something
+that can be developed also when the vendor looses interest.&lt;/p&gt;
+
+&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
+</description>
+       </item>
+       

        <item>
                <title>Web browser integration of VLC with Bittorrent support</title>
                <link>http://people.skolelinux.org/pere/blog/Web_browser_integration_of_VLC_with_Bittorrent_support.html</link>
        <item>
                <title>Web browser integration of VLC with Bittorrent support</title>
                <link>http://people.skolelinux.org/pere/blog/Web_browser_integration_of_VLC_with_Bittorrent_support.html</link>


@@ -38,7 +149,7 @@ what the strange x-scheme-handler style MIME types in desktop files
 are used for.  By adding x-scheme-handler/magnet to the MimeType entry
 in the desktop file, at least the browsers Firefox and Chromium will
 suggest to start VLC when selecting a magnet URI on a web page.  The
 are used for.  By adding x-scheme-handler/magnet to the MimeType entry
 in the desktop file, at least the browsers Firefox and Chromium will
 suggest to start VLC when selecting a magnet URI on a web page.  The

-end result is that now, with the plugin installed in Buster og Sid,
+end result is that now, with the plugin installed in Buster and Sid,

 one can visit any
 &lt;a href=&quot;https://archive.org/details/CopyingIsNotTheft1080p&quot;&gt;Internet
 Archive page with movies&lt;/a&gt; using a web browser and click on the
 one can visit any
 &lt;a href=&quot;https://archive.org/details/CopyingIsNotTheft1080p&quot;&gt;Internet
 Archive page with movies&lt;/a&gt; using a web browser and click on the


@@ -554,102 +665,5 @@ them. I hope you too will do the same.&lt;/p&gt;
 </description>
        </item>
        
 </description>
        </item>
        

-       <item>
-               <title>A bit more on privacy respecting health monitor / fitness tracker</title>
-               <link>http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</guid>
-                <pubDate>Mon, 13 Aug 2018 09:00:00 +0200</pubDate>
-               <description>&lt;p&gt;A few days ago, I wondered if there are any privacy respecting
-health monitors and/or fitness trackers available for sale these days.
-I would like to buy one, but do not want to share my personal data
-with strangers, nor be forced to have a mobile phone to get data out
-of the unit.  I&#39;ve received some ideas, and would like to share them
-with you.
-
-One interesting data point was a pointer to a Free Software app for
-Android named
-&lt;a href=&quot;https://github.com/Freeyourgadget/Gadgetbridge/&quot;&gt;Gadgetbridge&lt;/a&gt;.
-It provide cloudless collection and storing of data from a variety of
-trackers.  Its
-&lt;a href=&quot;https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices&quot;&gt;list
-of supported devices&lt;/a&gt; is a good indicator for units where the
-protocol is fairly open, as it is obviously being handled by Free
-Software.  Other units are reportedly encrypting the collected
-information with their own public key, making sure only the vendor
-cloud service is able to extract data from the unit.  The people
-contacting me about Gadgetbirde said they were using
-&lt;a href=&quot;https://us.amazfit.com/shop/bip?variant=336750&quot;&gt;Amazfit
-Bip&lt;/a&gt; and
-&lt;a href=&quot;http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/&quot;&gt;Xiaomi
-Band 3&lt;/a&gt;.&lt;/p&gt;
-
-&lt;p&gt;I also got a suggestion to look at some of the units from Garmin.
-I was told their GPS watches can be connected via USB and show up as a
-USB storage device with
-&lt;a href=&quot;https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html&quot;&gt;Garmin
-FIT files&lt;/a&gt; containing the collected measurements.  While
-proprietary, FIT files apparently can be read at least by
-&lt;a href=&quot;https://www.gpsbabel.org&quot;&gt;GPSBabel&lt;/a&gt; and the
-&lt;a href=&quot;https://apps.nextcloud.com/apps/gpxpod&quot;&gt;GpxPod&lt;/a&gt; Nextcloud
-app.  It is unclear to me if they can read step count and heart rate
-data.  The person I talked to was using a
-&lt;a href=&quot;https://buy.garmin.com/en-US/US/p/564291&quot;&gt;Garmin Forerunner
-935&lt;/a&gt;, which is a fairly expensive unit.  I doubt it is worth it for
-a unit where the vendor clearly is trying its best to move from open
-to closed systems.  I still remember when Garmin dropped NMEA support
-in its GPSes.&lt;/p&gt;
-
-&lt;p&gt;A final idea was to build ones own unit, perhaps by basing it on a
-wearable hardware platforms like
-&lt;a href=&quot;https://learn.adafruit.com/flora-geo-watch&quot;&gt;the Flora Geo
-Watch&lt;/a&gt;.  Sound like fun, but I had more money than time to spend on
-the topic, so I suspect it will have to wait for another time.&lt;/p&gt;
-
-&lt;p&gt;While I was working on tracking down links, I came across an
-inspiring TED talk by Dave Debronkart about
-&lt;a href=&quot;https://archive.org/details/DavedeBronkart_2010X&quot;&gt;being a
-e-patient&lt;/a&gt;, and discovered the web site
-&lt;a href=&quot;https://participatorymedicine.org/epatients/&quot;&gt;Participatory
-Medicine&lt;/a&gt;.  If you too want to track your own health and fitness
-without having information about your private life floating around on
-computers owned by others, I recommend checking it out.&lt;/p&gt;
-
-&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
-</description>
-       </item>
-       
-       <item>
-               <title>Privacy respecting health monitor / fitness tracker?</title>
-               <link>http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</guid>
-                <pubDate>Tue, 7 Aug 2018 16:00:00 +0200</pubDate>
-               <description>&lt;p&gt;Dear lazyweb,&lt;/p&gt;
-
-&lt;p&gt;I wonder, is there a fitness tracker / health monitor available for
-sale today that respect the users privacy?  With this I mean a
-watch/bracelet capable of measuring pulse rate and other
-fitness/health related values (and by all means, also the correct time
-and location if possible), which is &lt;strong&gt;only&lt;/strong&gt; provided for
-me to extract/read from the unit with computer without a radio beacon
-and Internet connection.  In other words, it do not depend on a cell
-phone app, and do make the measurements available via other peoples
-computer (aka &quot;the cloud&quot;).  The collected data should be available
-using only free software.  I&#39;m not interested in depending on some
-non-free software that will leave me high and dry some time in the
-future.  I&#39;ve been unable to find any such unit.  I would like to buy
-it.  The ones I have seen for sale here in Norway are proud to report
-that they share my health data with strangers (aka &quot;cloud enabled&quot;).
-Is there an alternative?  I&#39;m not interested in giving money to people
-requiring me to accept &quot;privacy terms&quot; to allow myself to measure my
-own health.&lt;/p&gt;
-
-&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
-</description>
-       </item>
-       

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 </rss>
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 </rss>