Article View: alt.dcom.telecom
Article #274secure voice telephony codec sources needed
From: urbina
Date: Thu, 21 Jan 1993 22:20
Date: Thu, 21 Jan 1993 22:20
17 lines
849 bytes
849 bytes
I need a source for 8 bit linear CODECs and LPC chips (linear predictive compression) I'm prototyping my own secure voice telephony. Apparently the bandwidth with an 8 bit ADC sampling narrowband audio at 7khz is too fast for todays technology. With LPC you can compress it down to 9600 baud. If I had an ISDN phone system, then I wouldn't have these constraints. Anyway, I'd appreciate any sources or manufacturers of telcom codecs or scrambling chips. Thanx, Guy Urbina@novax.llnl.gov
Technical Details
Message-ID:
<1993Jan21.142055.1@novax.llnl.gov>Path:
arc1-ca.pugleaf.net!sparky!uunet!Firewall!lll-winken!novax.llnl.gov!urbinaShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!Firewall!lll-winken!novax.llnl.gov!urbina From: urbina@novax.llnl.gov Newsgroups: alt.dcom.telecom Subject: secure voice telephony codec sources needed Message-ID: <1993Jan21.142055.1@novax.llnl.gov> Date: 21 Jan 93 22:20:55 GMT Sender: usenet@lll-winken.LLNL.GOV Lines: 18 Nntp-Posting-Host: novax.llnl.gov