Hacker News<p>Open Source DMR Modem Implementation in SDR with GNU Radio and Codec2</p><p><a href="https://qradiolink.org/open-source-DMR-transceiver-implementation.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">qradiolink.org/open-source-DMR</span><span class="invisible">-transceiver-implementation.html</span></a></p><p><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HackerNews</span></a> <a href="https://mastodon.social/tags/OpenSource" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OpenSource</span></a> <a href="https://mastodon.social/tags/DMR" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DMR</span></a> <a href="https://mastodon.social/tags/SDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SDR</span></a> <a href="https://mastodon.social/tags/GNURadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GNURadio</span></a> <a href="https://mastodon.social/tags/Codec2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codec2</span></a> <a href="https://mastodon.social/tags/DigitalCommunications" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DigitalCommunications</span></a></p>
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#codec2
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Kevin Karhan :verified:<p><span class="h-card" translate="no"><a href="https://hessen.social/@ustralien" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>ustralien</span></a></span> and even then:</p><p>Modern <a href="https://infosec.space/tags/Codecs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codecs</span></a> like <a href="https://infosec.space/tags/Speex" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Speex</span></a> and espechally <a href="https://infosec.space/tags/Opus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Opus</span></a> really work great on <a href="https://infosec.space/tags/Mumble" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mumble</span></a> and other solutions like <a href="https://infosec.space/tags/WebCall" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebCall</span></a> and <a href="https://infosec.space/tags/SIP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SIP</span></a>-Clients like <a href="https://infosec.space/tags/Linphone" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linphone</span></a>.</p><ul><li>Unless you're stuck on <a href="https://infosec.space/tags/Iridium" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Iridium</span></a>, then <a href="https://infosec.space/tags/Codec2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codec2</span></a> is the only thing narrowband-efficient enough to work at all...</li></ul>
Kevin Karhan :verified:<p><span class="h-card" translate="no"><a href="https://mastodon.online/@herrorange" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>herrorange</span></a></span> Already existing options do that better than the old <a href="https://infosec.space/tags/SILK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SILK</span></a> codec.</p><ul><li><p><a href="https://infosec.space/tags/Linphone" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linphone</span></a> (<a href="https://infosec.space/tags/SIP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SIP</span></a> client) supports <a href="https://infosec.space/tags/Opus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Opus</span></a> & <a href="https://infosec.space/tags/Speex" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Speex</span></a>, which can do better at narrower bandwiths)</p></li><li><p><a href="https://infosec.space/tags/Codec2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codec2</span></a> OFC can work even on <a href="https://infosec.space/tags/Iridium" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Iridium</span></a>-level bandwiths</p></li><li><p><a href="https://infosec.space/tags/Mumble" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mumble</span></a>, <a href="https://infosec.space/tags/WebCall" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebCall</span></a> & <a href="https://infosec.space/tags/JitsiMeet" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JitsiMeet</span></a> also do fine on <a href="https://infosec.space/tags/Skype" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Skype</span></a>-able bandwiths and don't require a <em>T H I C C</em> install on peoples' devices...</p></li></ul>
Kevin Karhan :verified:<p>I mean, I don't expect a <a href="https://infosec.space/tags/Tablet" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Tablet</span></a> to have good <a href="https://infosec.space/tags/Audio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Audio</span></a> quality.</p><ul><li>Frankly I'd be content with <a href="https://infosec.space/tags/Codec2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codec2</span></a>-level <a href="https://infosec.space/tags/AMR" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AMR</span></a> since no carrier properly implements <a href="https://infosec.space/tags/AMRWB" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AMRWB</span></a> anyway. Everyone who even halfasses <a href="https://infosec.space/tags/AudioQuality" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AudioQuality</span></a> will plug in a headset anyway...</li></ul><p>But being able to just chug in a <a href="https://infosec.space/tags/SIM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SIM</span></a> and test it by calling it is something people do need rather often!</p><ul><li>Even if it's just for a few calls like booking a data package on the go! </li></ul><p><a href="https://infosec.space/@kkarhan/113865596661922371" translate="no" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">infosec.space/@kkarhan/1138655</span><span class="invisible">96661922371</span></a></p>
Kevin Karhan :verified:uspol
Kevin Karhan :verified:<p><span class="h-card" translate="no"><a href="https://cloudisland.nz/@xssfox" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>xssfox</span></a></span> personally, I think <a href="https://infosec.space/tags/Codec2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codec2</span></a> is pretty awesome given it's a <a href="https://infosec.space/tags/FLOSS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FLOSS</span></a> codec that can work with as little as 450bit/s, making <a href="https://infosec.space/tags/DigitalVoice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DigitalVoice</span></a> via <a href="https://infosec.space/tags/Moonbouce" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Moonbouce</span></a> possible!</p>
Kevin Karhan :verified:<p><span class="h-card" translate="no"><a href="https://mastodon.online/@pawagner" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>pawagner</span></a></span> in this case the person was (presumably amidst the background noise) in a callcenter and refused to acknowledge it's <em>their fault and responsibility</em> to not have noise <em>AND</em> legible audio quality.</p><p><a href="https://infosec.space/tags/Iridium" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Iridium</span></a> (<a href="https://infosec.space/tags/AMBE" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AMBE</span></a>) <a href="https://infosec.space/tags/NATO" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NATO</span></a>-Radio (<a href="https://infosec.space/tags/MELP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MELP</span></a> & <a href="https://infosec.space/tags/MELPe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MELPe</span></a>) and even <a href="https://infosec.space/tags/Codec2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Codec2</span></a> is more legible than they were...</p>
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