On Thu, Apr 07, 2005 at 10:23:50PM +0100, Gavin Hamill wrote: > On Thursday 07 April 2005 22:17, Alex Vishnev wrote: > > Magnus, > > Also, compression gives voice recognition quite a challenge, > > as the speech samples arriving at the voip voice recognition engine is not > > the same as it was spoken using regular 64kbits pstn connection (as an > > example). > If http://www.shazam.com/ can identify music tracks over a GSM mobile, then > it > must surely be possible for voice with a quiet background to be discerned :)
It is ... however Shazam have a complete archive of virtually every bit of music produced (and they license it too) and very clever algorithms that can compare sections of music very quickly. They sort of signature/MD5 every 10 seconds of music and compare that with the signature of the bit of music that's being played to them. But as far as the original question goes for BT (the encumbant) offering this to compete with VoIP services - I cant imagine why. They may be doing it to compete with CPS (carrier pre select) and other initiatives which are driving retail customers away in droves. In the UK there are probably less than 40,000 VoIP users - of which Wanadoo have the majority (all the others - excluding Skype - have less than 15,000). In 2006 BT (if not earlier) BT start migrating their core infrastucture to what's known as their 21CN (21st Century network). This puts IP in EVERY exchange in the UK, and ALL voice traffic is carried over IP. This will extend into the home, so if you have an IP phone it will work with BT's network, if you have an analogue line as soon as it hits the exchange it's converted to H.248. If they actually manage to get it going (which they are very likely to) the PSTN disappears in 2009. At that point it's likely that every UK telco that isn't BT, goes out of business too. Steve -- NetTek Ltd Phone/Fax +44-(0)20 7483 2455 SMS steve-epage (at) gbnet.net mob 07775 755503 Personal Blog http://stevekennedy.blogspot.com Euro Tech News Blog http://eurotechnews.blogspot.com _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
