Not to be disloyal to PICs, but there are audio recording IC for just
such jobs as this.  I don't know part numbers but I know Radio Shack
used to sell them.  They store audio as analog voltages in EEPROM-like
cells.  There is no processor or A/D D/A needed.

Sherpa Doug

P.S. Found a part number: ISD2560 and cousins sold by Jameco.

> -----Original Message-----
> From: Olin Lathrop [mailto:olin_piclist@EMBEDINC.COM]
> Sent: Saturday, August 04, 2001 11:26 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Voice Playback for "Novelty Toys"
>
>
> > He wants to produce a novelty toy that speaks. say 6
> phrases, 2-4 seconds
> > each..
> >
> > I was wondering if anyone has any experience with this. I
> know that there
> > are Chip-On-Board solutions for this kind on thing, any
> pointers? Any
> ideas
> > of the costs and order quantities needed?
>
> That's within range of a PIC with PWM output and external
> EEPROM for storing
> directly digitized voice.  A halloween project of mine
> (http://www.embedinc.com/pic/hal.htm) stores about 7 seconds
> of low quality
> audio in a 16F876, so a single external EEPROM should be able
> to handle 12
> to 24 seconds.
>
>
> ********************************************************************
> Olin Lathrop, embedded systems consultant in Littleton Massachusetts
> (978) 742-9014, olin@embedinc.com, http://www.embedinc.com
>
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