[sci.electronics] *Quick* source for 3.12 Mhz crystal??, and speech chip information

tac@sei.cmu.edu (Timothy Coddington) (07/21/88)

	I need a 3.12 Mhz crystal.  Does anybody know of a good source for
	this part that will deliver quickly, and is reasonably priced??

	Tim Coddington    (412) 268-7712 
				244-8557 (late is OK)

	arpanet: tac@sei.cmu.edu


	Yes. In case you guessed I bought the SPO-256-AL2/CTS-256-AL2 chip
	set from GI.

	If anyone has any information on speech chip technology please pass
	it on.  I'm interested in finding out who (such as General
	Instruments, and National) make these kinds of chips, and what 
	is generally available in terms of capabilities.  Also
	bibliographic references (articles, books, application notes, etc)

	Thanx 

tmk@io.ATT.COM (59481[rjb]-t.m.ko) (07/21/88)

In article <6308@aw.sei.cmu.edu> tac@sei.cmu.edu (Timothy Coddington) writes:
>
>	If anyone has any information on speech chip technology please pass
>	it on.  I'm interested in finding out who (such as General
>	Instruments, and National) make these kinds of chips, and what 
>	is generally available in terms of capabilities.  Also
>	bibliographic references (articles, books, application notes, etc)
>

There is a speech recognition chip SP1000 from General Instrument (?).
It uses linear predictive coding and does both recognition and systhesis.

-tmk

mjj@stda.jhuapl.edu (Marshall Jose) (07/22/88)

     One place that comes to mind is Digi-Key in Minnesota.  They show a
3.145 Mhz crystal, fundamental mode, for about $1.50.  Their number is
1-800-344-4539.  I've been impressed with their delivery response.
     I know 3.145 isn't exactly 3.12, but it's close enough -- the speech
will be imperceptibly higher.

Disclaimer:  I have no association with Digi-Key except as a satisfied customer.

Marshall Jose
mjj@aplvax.jhuapl.edu  ||  ...mimsy!aplcen!aplvax!mjj

ralphw@ius3.ius.cs.cmu.edu (Ralph Hyre) (07/27/88)

In article <744@io.ATT.COM> tmk@io.UUCP (59481[rjb]-t.m.ko) writes:
>In article <6308@aw.sei.cmu.edu> tac@sei.cmu.edu (Timothy Coddington) writes:
>>
>>	If anyone has any information on speech chip technology please
>
>There is a speech recognition chip SP1000 from General Instrument (?).
>It uses linear predictive coding and does both recognition and systhesis.
>
Does this chip have the bug where the input LPC params are incompatible with
the output LPC params?  I thought I read this in the Circuit Cellar
article on the Lis'ner 1000, but upon re-reading I could find no
mention of such a limitation.  If something says it uses LPC-10
does that mean another LPC-10 chip will interoperate with it?

(I believe LPC-10 is a government standard for LPC paramters, but I don't
know it's scope.)




-- 
					- Ralph W. Hyre, Jr.

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