Path: utzoo!utgpu!watmath!clyde!att!icus!limbic!gil From: gil@limbic.UUCP (Gil Kloepfer Jr.) Newsgroups: sci.electronics Subject: Re: CODECs and voice digitizing Summary: AT&T Tech Journal Message-ID: <408@limbic.UUCP> Date: 5 Dec 88 06:53:00 GMT References: <184@serene.UUCP> Reply-To: gil@limbic.UUCP (Gil Kloepfer Jr.) Organization: ICUS Software Systems, Islip, NY Lines: 30 In article <184@serene.UUCP> gbell@pnet12.cts.com (Greg Bell) writes: |> o Also, does anybody have any experience with using CODECs |> or other chips to digitize speech? I'd like to be able |> to find some sort of compression technique so that I |> wouldn't need a lot of EPROMs. But, I'd like to hear |> from anybody who has experimented with digitizing speech. |>UUCP: { uunet ncr-sd }!pnet12!gbell |>ARPA: crash!pnet12!gbell@nosc.mil |>INET: gbell@pnet12.cts.com I started doing some fooling with voice digitization and ran into some gaps in my education that I have to brush-up on to help me understand it all :-) A good source of information can be found in the AT&T Technical Journal, volume 65, issue 5 (Sept/Oct 1986) entitled "Speech Processing Technology." Back issues of this can be obtained by calling (800) 432-6600 (this is the AT&T customer information center). It has a lot of speech processing techniques as they apply to telephony, but it also explains a lot about the mathematical methods used to process sound digitally. From what I understand, there is a lot of theory behind speech processing beyond the basic A/D converter and sampling. It would be interesting to see a discussion about this on the net, but I'm afraid that I wouldn't have a whole lot to offer thus far. -------- Gil Kloepfer, Jr. U-Net: {decuac,boulder,talcott,sbcs}!icus!limbic!gil ICUS Software Systems Voice: (516) 968-6860 [H] (516) 746-2350 x219 [W] P.O. Box 1 Internet: gil@icus.islp.ny.us Islip Terrace, NY 11752 "Life's a ... well, you know..."