Talk:Siren
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Do you know if this codec has any relation vith the Vivo Siren audio codec (fourcc 0x112) ? Vivo siren should be based on G723
--rxt 07:47, 15 October 2006 (EDT)
Taken from #mplayerdev@irc.freenode.net (I'm KaKaRoTo-KS) :
Oct 15 01:03:37 <reynaldo> thats not the same as vivo siren isnt it ? Oct 15 01:03:47 <KaKaRoTo-KS> don't know Oct 15 01:04:07 <KaKaRoTo-KS> I know they are many codecs named 'siren' Oct 15 01:04:27 <KaKaRoTo-KS> siren7, and siren14 (for the 7KHz and 14KHz freqs) Oct 15 01:04:34 <KaKaRoTo-KS> G722.1 is also named Siren Oct 15 01:04:41 <KaKaRoTo-KS> but this one is different Oct 15 01:04:54 <KaKaRoTo-KS> Microsoft... they changed the specs to make it incompatible with the G722.1 specs Oct 15 01:05:07 <KaKaRoTo-KS> I've just set up this page : http://wiki.multimedia.cx/index.php?title=Siren Oct 15 01:05:12 <KaKaRoTo-KS> it tells about the few diffs found ... Oct 15 01:07:12 <KaKaRoTo-KS> reynaldo, seems not the same, vivo has a 2CC of 0x0112, this one is 0x028E, but it's probably the same base everywhere Oct 15 01:08:07 <KaKaRoTo-KS> +vivo == G723.1 ... Oct 15 01:10:06 <reynaldo> you know, from what you wrote there, im really wondering if ACT its somewhat related Oct 15 01:10:53 <KaKaRoTo-KS> ACT ? Oct 15 01:11:15 <reynaldo> yup, some weird codec s1mp3 based players use for voice recordings Oct 15 01:12:00 <KaKaRoTo-KS> the codec is in sirenacm.dll, it's shipped with MSN Messenger, and it's used for the "Voice clips" feature Oct 15 01:17:24 <reynaldo> can you send me an small siren encoded sample ? ... Oct 15 01:40:04 <KaKaRoTo-KS> reynaldo, found anything of interest ? Oct 15 01:42:49 <reynaldo> well, realized they are not the same :) Oct 15 01:42:51 <reynaldo> sadly Oct 15 01:42:52 <reynaldo> :D
That's about all I know... if you have a dll implementing vivo siren, I can take a look at it and tell you if the code structure looks the same or not, that could give us the answer.
--KaKaRoTo 16:18, 15 October 2006