🚀 go-pugleaf

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