RE: Newbee ..- encrypted calls/SMS

2008-04-25 Thread Crane, Matthew
Yes, I understand that, that is why I'm thinking of this approach. My idea was to use analog voice transforms and their inverse with properties that would preserve most of the codec performance. But it would be awfully difficult to sync up the inverse on the other end without a data connection,

Re: Newbee ..- encrypted calls/SMS

2008-04-25 Thread Ian Stirling
Crane, Matthew wrote: Yes, I understand that, that is why I'm thinking of this approach. My idea was to use analog voice transforms and their inverse with properties that would preserve most of the codec performance. But it would be awfully difficult to sync up the inverse on the other end

Re: Newbee ..- encrypted calls/SMS

2008-04-25 Thread Flemming Richter Mikkelsen
There are no simple voice transforms at all that will get through the codec, and actually encrypt. Voice changing is possible, but encryption is not. You _cannot_ - for example - exepect frequency inversion - to get through the codec chain. What about correlating (multiplying) the input

Re: Newbee ..- encrypted calls/SMS

2008-04-25 Thread Ian Stirling
Flemming Richter Mikkelsen wrote: There are no simple voice transforms at all that will get through the codec, and actually encrypt. Voice changing is possible, but encryption is not. You _cannot_ - for example - exepect frequency inversion - to get through the codec chain. What about

RE: Newbee ..- encrypted calls/SMS

2008-04-25 Thread Crane, Matthew
community discussion Subject: Re: Newbee ..- encrypted calls/SMS Crane, Matthew wrote: Yes, I understand that, that is why I'm thinking of this approach. My idea was to use analog voice transforms and their inverse with properties that would preserve most of the codec performance. But it would

RE: Newbee ..- encrypted calls/SMS

2008-04-25 Thread David Pottage
On Fri, April 25, 2008 2:18 pm, Crane, Matthew wrote: Yes, I understand that, that is why I'm thinking of this approach. My idea was to use analog voice transforms and their inverse with properties that would preserve most of the codec performance. But it would be awfully difficult to sync