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- Path: sparky!uunet!opel!slc1!vk2bea!michael
- From: michael@vk2bea.UUCP (Michael G. Katzmann)
- Newsgroups: sci.electronics
- Subject: Re: Recording sound on chip
- Message-ID: <1062@vk2bea.UUCP>
- Date: 27 Jan 93 17:50:08 GMT
- References: <1993Jan25.214046.9622@hplabsz.hpl.hp.com>
- Reply-To: michael@vk2bea.UUCP (Michael G. Katzmann)
- Organization: Broadcast Sports Technology, Crofton. Maryland.
- Lines: 49
-
- In article <1993Jan25.214046.9622@hplabsz.hpl.hp.com> sivaram@hplabsz.hpl.hp.com (S. Sivaramakrishnan) writes:
- >I am looking for a cheap method to record and playback about 15 seconds of
- >sound on a chip.
- >
- >The whole setup, I GUESS, will comprise:
- >1) A microphone
- >2) An A/D converter that digitizes the sound
- >3) A unit that accepts the commands "record" and "playback"
- >4) Some memory that holds the sound image
- >5) A D/A converter to generate an analog signal
- >6) A speaker for playback
- >7) Power supply
- >
-
- Dallas Semiconductor (214) 450-0400, have a 'speech stick' (DS2270)
-
- - 50 seconds of recording capacity at 8Kbps (expandable with
- external ram)
- - selectable record/playback rates 8 to 32Kbs
-
- - Uses ADPCM compression/expansion algorithms for high fidelity
- record/playback
-
- - Digital audio level monitoring
-
- - Instant random access playback of recorded messages
-
- - programmable input/output gain for optimum record/playback levels
-
- - Nonvolatile SRAM retains data for 10 years
-
- - mates with JEDEC-standard 35-pin SIMM connectors
-
- It is a board about 4"x1" and has just about all you need. Just add
- a mic and speaker and talk to it down an 3 wire interface (clock Din Dout).
-
- It also has a DTMF generator and reciever.
-
- It is designed for 'tele-servicing'. i.e. You dial up your pin-ball machine
- to see if it needs emptying!
-
- Under $100 the last time I bought one.
-
-
- --
- Michael Katzmann > Broadcast Sports Technology Inc.
- ~~~~~~~~~~~~~~~~ < Crofton, Maryland. U.S.A
- Amateur Radio Stations: >
- NV3Z / VK2BEA / G4NYV / AAR3VK < opel!vk2bea!michael@uunet.uu.net
-