voice chip help

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#1
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hi , need some link tutorial or resources for a project,
have to record/playback 8 short voice messages, that can be then played back using a microcontroller IO line, the ouput of the voice chip would be fed to a gsm modem board that will be airing the message on the call... any ideas? suggestions? etc

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You can do that with a dsPIC and the free Microchip Speech Encoding/Decoding libraries:

http://www.microchip.com/stellen...

http://www.microchip.com/stellen...

Leon Heller G1HSM

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problem is that i am using Avr

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Any help?

AVR335: Digital Sound Recorder
with AVR® and DataFlash®

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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WAAAAYYYYYY back when I used a chip from ISD, now WINBOND. Worked great.

I am going to check out js' idea....looks like a fun device

Jim

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Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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somthing like ISD1820 would works for you. A module is here: http://bit.ly/qXR1jO

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I am sure that ISD1700 series includes the ic you need.

http://pdf1.alldatasheet.com/dat...

The difference between the ics of this series is the recording memory available.

Good Luck.

Michael.

User of:
IAR Embedded Workbench C/C++ Compiler
Altium Designer

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I also used the ISDxxxx in a couple of production apps. A bit of a learning curve to use all the features but pretty straightforward if the "default" setup is sufficient.

I don't know if they are "most" cost effective in high volumes, but it sure kept the dev time to a minimum.

Quote:

WAAAAYYYYYY back when I used a chip from ISD, now WINBOND.

... now Nuvoton. ;)

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Why not just hook a mic up to your adc and have every sample simultaneously save into a ram chip of some kind. My friend did something like this and it actually worked really well even though it was 8 bit :p

This was way back on an Intel 8085 8)

edit: looks like that's what js's app note is about anyhow.

Chief Tinkerer